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Weiss GS, Silva FRO, Garcia RM, Sakae LO, Viana ÍEL, Hara AT, Lima LC, Scaramucci T. Experimental toothpastes containing β-TCP nanoparticles functionalized with fluoride and tin to prevent Erosive Tooth Wear. J Dent 2024; 149:105273. [PMID: 39084548 DOI: 10.1016/j.jdent.2024.105273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/17/2024] [Accepted: 07/26/2024] [Indexed: 08/02/2024] Open
Abstract
OBJECTIVES The present study aimed to synthesize toothpastes containing Beta- TriCalcium Phosphate (β-TCP) nanoparticles, functionalized with fluoride and tin, and test their ability to reduce erosive tooth wear (ETW). METHODS Toothpastes were synthesized with the following active ingredients: 1100 ppm of fluoride (as sodium fluoride, F-), 3500 ppm of tin (as stannous chloride, Sn2+), and 800 ppm of β-TCP (Sizes a - 20 nm; and b - 100 nm). Enamel specimens were randomly assigned into the following groups (n = 10): 1. Commercial toothpaste; 2. Placebo; 3 F-; 4. F- + β-TCPa; 5. F- + β-TCPb; 6. F- + Sn2+; 7. F- + Sn2+ + β-TCPa and 8. F- + Sn2+ + β-TCPb. Specimens were subjected to erosion-abrasion cycling. Surface loss (in µm) was measured by optical profilometry. Toothpastes pH and available F- were also assessed. RESULTS Brushing with placebo toothpaste resulted in higher surface loss than brushing with F- (p = 0.005) and F- + β-TCPb (p = 0.007); however, there was no difference between F- and F- + β-TCPb (p = 1.00). Commercial toothpaste showed no difference from Placebo (p = 0.279). The groups F-, F- + β-TCPa, F- + β-TCPb, F- + Sn2+, F- + Sn2+ + β-TCPa and F- + Sn2+ + β-TCPb were not different from the commercial toothpaste (p > 0.05). Overall, the addition of β-TCP reduced the amount of available fluoride in the experimental toothpastes. The pH of toothpastes ranged from 4.97 to 6.49. CONCLUSIONS Although toothpaste containing β-TCP nanoparticles protected enamel against dental erosion-abrasion, this effect was not superior to the standard fluoride toothpaste (commercial). In addition, the functionalization of β-TCP nanoparticles with fluoride and tin did not enhance their protective effect. CLINICAL SIGNIFICANCE Although β-TCP nanoparticles have some potential to control Erosive Tooth Wear, their incorporation into an experimental toothpaste appears to have a protective effect that is similar to a commercial fluoride toothpaste.
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Affiliation(s)
- Guilherme Stangler Weiss
- Department of Restorative Dentistry, University of São Paulo (USP), School of Dentistry, Av. Prof Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - Flávia Rodrigues Oliveira Silva
- Material Science and Technology Center, Nuclear and Energy Research Institute (IPEN-CNEN), Av. Prof. Lineu Prestes 2242, São Paulo, SP 05508-000, Brazil
| | - Raíssa Manoel Garcia
- Department of Restorative Dentistry, University of São Paulo (USP), School of Dentistry, Av. Prof Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - Letícia Oba Sakae
- Department of Restorative Dentistry, University of São Paulo (USP), School of Dentistry, Av. Prof Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - Ítallo Emídio Lira Viana
- Department of Comprehensive Care, Division of Operative Dentistry - Tufts University School of Dental Medicine, Boston, MA, USA
| | - Anderson T Hara
- Department of Cariology and Operative Dentistry, Indiana University School of Dentistry (IUSD), Indianapolis, IN, USA
| | - Leonardo Custódio Lima
- Department of Dentistry, Federal University of Juiz de Fora (UFJF), Campus Governador Valadares, MG, 35010-180, Brazil.
| | - Taís Scaramucci
- Department of Restorative Dentistry, University of São Paulo (USP), School of Dentistry, Av. Prof Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
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Kaurani P, Hindocha A, Porwal A, Tambe A, Price C, Goel V, Krasner H, Khubchandani J, Batra K. Effect of Addition of Metal Oxide Nanoparticles on the Strength of Heat-Cured Denture Base Resins: Protocol for Systematic Review and Meta-Analysis of In Vitro Studies. JMIR Res Protoc 2024; 13:e59999. [PMID: 39321454 PMCID: PMC11464938 DOI: 10.2196/59999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 09/27/2024] Open
Abstract
BACKGROUND Metal oxide nanoparticle-reinforced polymethyl methacrylate (PMMA) has been shown to improve mechanical properties, such as strength. Different types of metal oxide nanoparticles have been used previously, but the comparative effect on the strength of heat-cured denture base resins remains unclear. OBJECTIVE This is a protocol for a systematic review and meta-analysis that will aim to pool evidence to compare and analyze the effects of the addition of different metal oxide nanoparticles, with varied sizes and concentrations, on the strength (flexural, impact, transverse, compressive tensile strength, and fracture toughness) of heat-cured PMMA. In addition, this review aims to analyze methodological factors, such as adherence to testing and sample-making guidelines, and the effects of surface treatments of the nanoparticles on the strength of heat-cured denture base resins. METHODS The protocol has been registered in the Open Science Framework. Search strategies to identify studies on the effect of metal oxide nanoparticles on the strength of heat-cured PMMA were developed by the subject matter expert in library science. Following this, a systematic search of 5 electronic databases (PubMed [NCBI], Scopus [Elsevier], Cochrane Library [Wiley], CINAHL Plus with Full Text [EBSCO], and Dimensions Free Web App) was conducted to retrieve in vitro studies published in English from January 2012 to October 2023. Along with this citation chasing, other online sources and gray literature were also searched. Furthermore, papers will be screened, and appropriate data elements will be extracted in a standardized manner. A risk-of-bias assessment will be performed using a modified Cochrane Risk of Bias Tool. A meta-analysis will be performed using a random-effects model. RESULTS Search in databases resulted in 1837 papers, of which 1752 were duplicates, leaving 85 records that were screened for titles and abstracts based on the eligibility criteria. A similar search run on other online sources identified 129 papers that will be further analyzed for inclusion. The study was initiated in November 2023 and research questions and search strategies were formulated. The proposed study is expected to be completed by December 2024. CONCLUSIONS This systematic review will comprehensively analyze the effects of the incorporation of metal oxide nanoparticles in heat-cured denture base resins on the strength of the material. We anticipate gaining a deeper understanding of the effects and method of use of metal oxide nanoparticles to improve the strength of PMMA denture base resins. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/59999.
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Affiliation(s)
- Pragati Kaurani
- Department of Prosthodontics Crown and Bridge, Mahatma Gandhi Dental College and Hospital, Jaipur, India
| | - Amit Hindocha
- Department of Prosthodontics and Crown and Bridge, Sinhgad Dental College and Hospital, Pune, India
| | - Amit Porwal
- Department of Prosthetic Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Abhijit Tambe
- Department of Prosthodontics Crown and Bridge, Sau Mathurabai Bhausaheb Thorat Institute of Dental Sciences and Research, Nashik, India
| | - Carrie Price
- Albert S Cook Library, Towson University, Towson, MD, United States
| | - Vidhani Goel
- School of Public Health, University of Nevada Las Vegas, Las Vegas, NV, United States
| | - Henry Krasner
- Kirk Kerkorian School of Medicine at UNLV, Las Vegas, NV, United States
| | - Jagdish Khubchandani
- College of Health, Education, and Social Transformation, New Mexico State University, Las Cruces, NM, United States
| | - Kavita Batra
- Department of Medical Education, Kirk Kerkorian School of Medicine at UNLV, Las Vegas, NV, United States
- Office of Research, Kirk Kerkorian School of Medicine at UNLV, Las Vegas, NV, United States
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Deepak, Saini D, Naskar S, Mandal D, Roy RK. Room Temperature Single-Component Organic Multiferroics with Large Magnetoelectric Coupling: Proficient Approach for Stray-Magnetic Field Harvesting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2405248. [PMID: 39240077 DOI: 10.1002/smll.202405248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 08/17/2024] [Indexed: 09/07/2024]
Abstract
Magnetoelectric materials are highly desirable for technological applications due to their ability to produce electricity under a magnetic field. Among the various types of magnetoelectric materials studied, their organic counterparts provide an opportunity to develop solution-processable, flexible, lightweight, and wearable electronic devices. However, there is a rare choice of solution-processable, flexible, lightweight magnetoelectric materials which has tremendous technological interest. A supramolecular scaffold with precisely positioned structure-forming and functional units (electrical dipoles and magnetic spins) is designed so that self-assembly results in functional unit organization. Structure-forming segments allow these scaffolds to self-assemble into hierarchically ordered structures in nonpolar solvents, creating nanofibrous organogel networks. In particular, the xerogel derived from this organogel exhibits the highest magnetoelectric coupling coefficient (αME ≈ 216 mV Oe-1 cm-1) reported to date for organic materials. This is even greater than commonly envisioned composite materials made of piezoelectric polymers and inorganic magnets. This single-component organic multiferroic material displays ferroelectricity (Tc ≈ 46 °C) and paramagnetic behavior at room temperature. With this, it is demonstrated that the possibilities of effectively harvesting stray magnetic fields that are copiously available in the surroundings and wasted otherwise.
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Affiliation(s)
- Deepak
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab, India
| | - Dalip Saini
- Quantum Materials and Devices Unit, Institute of Nanoscience and Technology, Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, India
| | - Sudip Naskar
- Quantum Materials and Devices Unit, Institute of Nanoscience and Technology, Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, India
| | - Dipankar Mandal
- Quantum Materials and Devices Unit, Institute of Nanoscience and Technology, Knowledge City, Sector 81, SAS Nagar, Mohali, 140306, India
| | - Raj Kumar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Punjab, India
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Al-Noaman A, Rawlinson SCF. A bioactive and anti-bacterial nano-sized zirconium phosphate/GO (nZrP/GO) composite: Potential use as a coating for dental implants? Dent Mater 2024:S0109-5641(24)00208-2. [PMID: 39117499 DOI: 10.1016/j.dental.2024.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 07/13/2024] [Accepted: 07/23/2024] [Indexed: 08/10/2024]
Abstract
OBJECTIVE Dental implants fabricated from titanium have several limitations and therefore, alternative materials that fulfil the criteria of successful dental implant (bioactivity and anti-bacterial activity) need to be considered. Polyether ether ketone (PEEK) has been suggested to replace titanium implants. However, this material needs surface modification to meet the appropriate criteria. A nano-sized zirconium phosphate/GO (nZrP/GO) composite coating was prepared to improve PEEK's biological qualities. METHODS Polished and cleaned PEEK discs were coated with the composite of nZrP doped with 1.25 wt% GO by the soft-template method. To analyze the composite coating, X-ray, atomic force microscopy, and field emission scanning electron microscopy-energy dispersive spectroscopy were used. The adhesion of the coating to PEEK was measured by adhesive tape test. By measuring the optical contact angle, the coated and non-coated samples' differences in wettability were evaluated. Antimicrobial activity was evaluated against S. aureus and E. coli and cytotoxicity tested employing gingival fibroblasts and osteoblast-like cells. RESULTS The nZrP/GO composite coating was 23.45 µm thick, was irregular and attached strongly to the PEEK surface. Following coating, the water contact angle dropped to 34° and surface roughness to 13 nm. The coating reduced the count of bacteria two-fold and was non-cytotoxic to mammalian osteoblast-like cells and fibroblasts. A precipitation of nano-calcium-deficient apatite was observed on the surface of the nZrP/GO coating following a 28-day immersion in SBF. SIGNIFICANCE PEEK-coated with nZr/GO coating is a good candidate as dental implant.
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Affiliation(s)
- Ahmed Al-Noaman
- University of Babylon, College of Dentistry, Department of Oral Surgery, Babylon City, Iraq.
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Jeżo A, Poohphajai F, Herrera Diaz R, Kowaluk G. Incorporation of Nano-Zinc Oxide as a Strategy to Improve the Barrier Properties of Biopolymer-Suberinic Acid Residues Films: A Preliminary Study. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3868. [PMID: 39124533 PMCID: PMC11313536 DOI: 10.3390/ma17153868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/19/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024]
Abstract
Finishing coatings in the wood-based composites industry not only influence the final appearance of the product but also serve to protect against fungi and molds and reduce the release of harmful substances, particularly formaldehyde and volatile organic compounds (VOCs). Carbon-rich materials, such as those derived from birch bark extraction, specifically suberin acids, can fulfill this role. Previous research has demonstrated that adding suberin acid residues (SAR) at 20% and 50% by weight significantly enhances the gas barrier properties of surface-finishing materials based on poly(lactide) (PLA) and polycaprolactone (PCL), particularly in terms of total VOC (TVOC) and formaldehyde emissions. This study aims to explore whether these properties can be further improved through the incorporation of nano-zinc oxide (nano-ZnO). Previous research has shown that these nanoparticles possess strong resistance to biological factors and can positively affect the characteristics of nanofilms applied as surface protection. The study employed PLA and PCL finishing layers blended with SAR powder at 10% w/w and included 2% and 4% nano-zinc oxide nanoparticles. The resulting blends were milled to create a powder, which was subsequently pressed into 1 mm-thick films. These films were then applied to raw particleboard surfaces. TVOC and formaldehyde emission tests were conducted. Additionally, the fungal resistance of the coated surfaces was assessed. The results showed that PLA/SAR and PCL/SAR composites with the addition of nano-zinc oxide nanoparticles exhibited significantly improved barrier properties, offering a promising avenue for developing biodegradable, formaldehyde-free coatings with enhanced features in the furniture industry. Furthermore, by utilizing SAR as a post-extraction residue, this project aligns perfectly with the concept of upcycling.
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Affiliation(s)
- Aleksandra Jeżo
- Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences—SGGW, Nowoursynowska St. 159, 02-776 Warsaw, Poland;
| | - Faksawat Poohphajai
- InnoRenew CoE, Livade 6a, 6310 Izola, Slovenia; (F.P.); (R.H.D.)
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, 6000 Koper, Slovenia
- Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, 00076 Aalto, Finland
| | - Rene Herrera Diaz
- InnoRenew CoE, Livade 6a, 6310 Izola, Slovenia; (F.P.); (R.H.D.)
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, 6000 Koper, Slovenia
| | - Grzegorz Kowaluk
- Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences—SGGW, Nowoursynowska St. 159, 02-776 Warsaw, Poland;
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Cao W, Zhu H. A Study on the Application Performance of High-Aspect-Ratio Nano-Ettringite in Photocurable Resin Composites. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3492. [PMID: 39063784 PMCID: PMC11277780 DOI: 10.3390/ma17143492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/10/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024]
Abstract
In this study, the impact of the addition of high-aspect-ratio nano-ettringite to photocurable epoxy acrylate resin was explored. The nano-ettringite samples were modified using γ-Aminopropyltriethoxysilane (KH-550) and γ-methacryloxypropyl trimethoxy silane (KH-570). Then, 3 wt% or 6 wt% KH-550-modified, KH-570-modified, and unmodified nano-ettringite samples were dispersed into resin via ultrasonic treatment in conjunction with mechanical stirring. The grafting effects of nano-ettringite onto KH-550 or KH-570 were analyzed through scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and thermogravimetric (TG) analysis. The results demonstrate that KH-550 and KH-570 have been successfully grafted onto the surface of nano-ettringite. In addition, this study also focuses on the variations of composite materials in the viscosity, shrinkage, tensile strength, and elongation at break. The results indicate that increased dosages of unmodified, KH-550-modified, and KH-570-modified nano-ettringite led to increased viscosity of the composite while reducing shrinkage. At the same dosage, the photocurable resin containing KH-570-modified nano-ettringite demonstrated a lower shrinkage and a higher tensile strength. From the analysis of tensile fracture surfaces, it was observed that compared to the KH-550 modified and unmodified variants, the KH-570 modified nano-ettringite exhibits superior dispersibility in photocurable epoxy acrylate resin. Notably, when the amount of KH-570-modified nano-ettringite was 3 wt%, the highest tensile strength of the composite was 64.61 MPa, representing a 72.57% increase compared to the blank sample. Furthermore, the incorporation of KH-570-modified nano-ettringite as a filler provides a new perspective for improving the performance of photocurable epoxy acrylate resin composites.
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Affiliation(s)
- Weihua Cao
- School of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
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El Fadly EB, Salah AS, Abdella B, Al Ali A, AlShmrany H, ElBaz AM, Abdelatty NS, Khamis EF, Maagouz OF, Salamah MA, Saleh MN, Sakr HK, El-Kemary MA. Mapping a sustainable approach: biosynthesis of lactobacilli-silver nanocomposites using whey-based medium for antimicrobial and bioactivity applications. Microb Cell Fact 2024; 23:195. [PMID: 38971787 PMCID: PMC11227706 DOI: 10.1186/s12934-024-02428-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/17/2024] [Indexed: 07/08/2024] Open
Abstract
This study explores a sustainable approach for synthesizing silver nanocomposites (AgNCs) with enhanced antimicrobial and bioactivity using safe Lactobacillus strains and a whey-based medium (WBM). WBM effectively supported the growth of Lactobacillus delbrueckii and Lactobacillus acidophilus, triggering a stress response that led to AgNCs formation. The synthesized AgNCs were characterized using advanced spectroscopic and imaging techniques such as UV‒visible, Fourier transform infrared (FT-IR) spectroscopy, transmission electron (TEM), and scanning electron microscopy with energy dispersive X-ray analysis (SEM-Edx). Lb acidophilus-synthesized AgNCs in WBM (had DLS size average 817.2-974.3 ± PDI = 0.441 nm with an average of metal core size 13.32 ± 3.55 nm) exhibited significant antimicrobial activity against a broad spectrum of pathogens, including bacteria such as Escherichia coli (16.47 ± 2.19 nm), Bacillus cereus (15.31 ± 0.43 nm), Clostridium perfringens (25.95 ± 0.03 mm), Enterococcus faecalis (32.34 ± 0.07 mm), Listeria monocytogenes (23.33 ± 0.05 mm), methicillin-resistant Staphylococcus aureus (MRSA) (13.20 ± 1.76 mm), and filamentous fungi such as Aspergillus brasiliensis (33.46 ± 0.01 mm). In addition, Lb acidophilus-synthesized AgNCs in WBM exhibit remarkable free radical scavenging abilities, suggesting their potential as bioavailable antioxidants. These findings highlight the dual functionality of these biogenic AgNCs, making them promising candidates for applications in both medicine and nutrition.
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Affiliation(s)
- E B El Fadly
- Department of Dairy Sciences, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, Egypt.
- Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, Kafrelsheikh, Egypt.
| | - A S Salah
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, UK
| | - B Abdella
- Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - A Al Ali
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, 57714, Bisha, Saudi Arabia
| | - H AlShmrany
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince, Sattam Bin Abdulaziz University, 11942, Alkharj, Saudi Arabia
| | - A M ElBaz
- Dairy Microbiology Research Department, Agriculture Research Center, Animal Production Research Institute, Giza, 12611, Egypt
| | - N S Abdelatty
- Department of Dairy Sciences, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, Egypt
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - E F Khamis
- Dairy Chemistry Research Department, Agriculture Research Center, Animal Production Research Institute, Giza, 12611, Egypt
| | - O F Maagouz
- Dairy Chemistry Research Department, Agriculture Research Center, Animal Production Research Institute, Giza, 12611, Egypt
| | - M A Salamah
- Agricultural Research Center, Food Technology Research Institute, Giza, 12611, Egypt
| | - M N Saleh
- Agricultural Research Center, Food Technology Research Institute, Giza, 12611, Egypt
| | - H K Sakr
- Agricultural Research Center, Food Technology Research Institute, Giza, 12611, Egypt
| | - M A El-Kemary
- Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, Kafrelsheikh, Egypt.
- Nile Valley University, Fayum, Egypt.
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Yee Foong Ng L, Ariffin H, Tengku Yasim-Anuar TA, Sakata M, Kawarada T, Yoshimura O, Tsukegi T, Afizan Nik Abd Rahman NM, Hassan MA. Nucleating and reinforcing effects of nanobiochar on poly(3-hydroxybutyrate- co-3-hydroxhexanoate) bionanocomposites. RSC Adv 2024; 14:21971-21981. [PMID: 39006768 PMCID: PMC11240217 DOI: 10.1039/d3ra08721b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 04/25/2024] [Indexed: 07/16/2024] Open
Abstract
This study promotes the use of nanobiochar (NBC) as an environmentally friendly substitute to conventional fillers to improve various properties of biopolymers such as their mechanical strength, thermal stability and crystallization properties. TGA analysis showed a slight increase in onset thermal degradation temperature of the composites by up to 5 °C with the addition of 4 wt% NBC. Non-isothermal DSC analysis determined that the addition of NBC into PHBHHx increases the crystallization temperature and degree of crystallinity of PHBHHx while isothermal DSC analysis demonstrated higher crystallization rate in PHBHHx/NBC composited by up to 54%. PHBHHx incorporated with NBC also exhibited superior tensile strength and modulus versus neat PHBHHx. Increase in mechanical strength was further proven via DMA where PHBHHx/NBC composites maintained higher storage modulus at higher temperatures when compared to neat PHBHHx. PHBHHx/NBC also exhibited no cytotoxicity effect against HaCat cells. This study demonstrates the ability of biochar to act as both nucleating agents and reinforcing agents in biodegradable polymers such as PHBHHx, which could be suitable for packaging application.
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Affiliation(s)
- Lawrence Yee Foong Ng
- Laboratory of Biopolymers and Derivatives, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
| | - Hidayah Ariffin
- Laboratory of Biopolymers and Derivatives, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
| | - Tengku Arisyah Tengku Yasim-Anuar
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
- Nextgreen Pulp & Paper Sdn. Bhd., Green Technology Park Paloh Inai 26600 Pekan Pahang Malaysia
| | - Megumi Sakata
- Department of Applied Chemistry, Faculty of Biotechnology and Chemistry, Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa 921-8501 Japan
| | - Tomoya Kawarada
- Department of Applied Chemistry, Faculty of Biotechnology and Chemistry, Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa 921-8501 Japan
| | - Osamu Yoshimura
- Department of Applied Chemistry, Faculty of Biotechnology and Chemistry, Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa 921-8501 Japan
| | - Takayuki Tsukegi
- Department of Applied Chemistry, Faculty of Biotechnology and Chemistry, Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa 921-8501 Japan
| | - Nik Mohd Afizan Nik Abd Rahman
- Laboratory of Biopolymers and Derivatives, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
| | - Mohd Ali Hassan
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
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Andoh V, Ocansey DKW, Naveed H, Wang N, Chen L, Chen K, Mao F. The Advancing Role of Nanocomposites in Cancer Diagnosis and Treatment. Int J Nanomedicine 2024; 19:6099-6126. [PMID: 38911500 PMCID: PMC11194004 DOI: 10.2147/ijn.s471360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 06/12/2024] [Indexed: 06/25/2024] Open
Abstract
The relentless pursuit of effective cancer diagnosis and treatment strategies has led to the rapidly expanding field of nanotechnology, with a specific focus on nanocomposites. Nanocomposites, a combination of nanomaterials with diverse properties, have emerged as versatile tools in oncology, offering multifunctional platforms for targeted delivery, imaging, and therapeutic interventions. Nanocomposites exhibit great potential for early detection and accurate imaging in cancer diagnosis. Integrating various imaging modalities, such as magnetic resonance imaging (MRI), computed tomography (CT), and fluorescence imaging, into nanocomposites enables the development of contrast agents with enhanced sensitivity and specificity. Moreover, functionalizing nanocomposites with targeting ligands ensures selective accumulation in tumor tissues, facilitating precise imaging and diagnostic accuracy. On the therapeutic front, nanocomposites have revolutionized cancer treatment by overcoming traditional challenges associated with drug delivery. The controlled release of therapeutic agents from nanocomposite carriers enhances drug bioavailability, reduces systemic toxicity, and improves overall treatment efficacy. Additionally, the integration of stimuli-responsive components within nanocomposites enables site-specific drug release triggered by the unique microenvironment of the tumor. Despite the remarkable progress in the field, challenges such as biocompatibility, scalability, and long-term safety profiles remain. This article provides a comprehensive overview of recent developments, challenges, and prospects, emphasizing the transformative potential of nanocomposites in revolutionizing the landscape of cancer diagnostics and therapeutics. In Conclusion, integrating nanocomposites in cancer diagnosis and treatment heralds a new era for precision medicine.
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Affiliation(s)
- Vivian Andoh
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Dickson Kofi Wiredu Ocansey
- Department of Laboratory Medicine, Lianyungang Clinical College, Jiangsu University, Lianyungang, Jiangsu, People’s Republic of China
- Directorate of University Health Services, University of Cape Coast, Cape Coast, Central Region, CC0959347, Ghana
| | - Hassan Naveed
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Naijian Wang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, People’s Republic of China
| | - Liang Chen
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Keping Chen
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Fei Mao
- Department of Laboratory Medicine, Lianyungang Clinical College, Jiangsu University, Lianyungang, Jiangsu, People’s Republic of China
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10
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Brunchi CE, Morariu S. Laponite ®-From Dispersion to Gel-Structure, Properties, and Applications. Molecules 2024; 29:2823. [PMID: 38930887 PMCID: PMC11206873 DOI: 10.3390/molecules29122823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Laponite® (LAP) is an intensively studied synthetic clay due to the versatility given by its layered structure, which makes it usable in various applications. This review describes the multifaceted properties and applications of LAP in aqueous dispersions and gel systems. The first sections of the review discuss the LAP structure and the interactions between clay discs in an aqueous medium under different conditions (such as ionic strength, pH, temperature, and the addition of polymers) in order to understand the function of clay in tailoring the properties of the designed material. Additionally, the review explores the aging phenomenon characteristic of LAP aqueous dispersions as well as the development of shake-gels by incorporating LAP. The second part shows the most recent studies on materials containing LAP with possible applicability in the drilling industry, cosmetics or care products industry, and biomedical fields. By elucidating the remarkable versatility and ease of integration of LAP into various matrices, this review underscores its significance as a key ingredient for the creation of next-generation materials with tailored functionalities.
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Affiliation(s)
| | - Simona Morariu
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania;
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11
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Almoammar S, Kamran MA, Alnazeh AA, Almagbol M, Al Jearah MM, Mannakandath ML. Orthodontic adhesive loaded with different proportions of ZrO 2 silver-doped nanoparticles: An in vitro μTBS, SEM, EDX, FTIR, and antimicrobial analysis. Microsc Res Tech 2024; 87:1146-1156. [PMID: 38278778 DOI: 10.1002/jemt.24503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/30/2023] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Zirconium dioxide silver-doped nanoparticles (ZrO2AgDNPs) impacts the adhesive material in terms of its physical characteristics, antimicrobial properties, degree of conversion (DC), and micro-tensile bond strength (μTBS) of orthodontic brackets to the enamel surface. A comprehensive methodological analysis utilizing a range of analytical techniques, including scanning electron microscopy coupled with energy-dispersive x-ray spectroscopy (EDX), Fourier-transform infrared (FTIR) spectroscopy, DC analysis, and μTBS testing. A light-curable orthodontic adhesive, specifically Transbond XT, was combined with ZrO2AgDNPs at 2.5% and 5%. As a control, an adhesive with no incorporation of ZrO2AgDNPs was also prepared. The tooth samples were divided into three groups based on the weightage of NPs: group 1: 0% ZrO2AgDNPs (control), group 2: 2.5 wt% ZrO2AgDNPs, and group 3: 5 wt% ZrO2AgDNPs. EDX graph demonstrated silver (Ag), Zirconium (Zr), and Oxygen (O2), The antibacterial efficacy of adhesives with different concentrations of NPs (0%, 2.5%, and 5%) was assessed using the pour plate method. The FTIR spectra were analyzed to identify peaks at 1607 cm-1 corresponding to aromatic CC bonds and the peaks at 1638 cm-1 indicating the presence of aliphatic CC bonds. The μTBS was assessed using universal testing machine (UTM) and bond failure of orthodontic brackets was seen using adhesive remanent index (ARI) analysis. Kruskal-Wallis test assessed the disparities in survival rates of Streptococcus mutans. Analysis of variance (ANOVA) and post hoc Tukey multiple comparisons test calculated μTBS values. The lowest μTBS was observed in group 1 adhesive loaded with 0% ZrO2AgDNPs (21.25 ± 1.22 MPa). Whereas, the highest μTBS was found in group 3 (26.19 ± 1.07 MPa) adhesive loaded with 5% ZrO2AgDNPs. ZrO2AgDNPs in orthodontic adhesive improved μTBS and has acceptable antibacterial activity against S mutans. ZrO2AgDNPs at 5% by weight can be used in orthodontic adhesive alternative to the conventional method of orthodontic adhesive for bracket bonding. RESEARCH HIGHLIGHTS: The highest μTBS was found in orthodontic adhesive loaded with 5% ZrO2AgDNPs. ARI analysis indicates that the majority of the failures fell between 0 and 1 among all investigated groups. The colony-forming unit count of S. mutans was significantly less in orthodontic adhesive loaded with nanoparticles compared with control. The 0% ZrO2AgDNPs adhesive showed the highest DC.
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Affiliation(s)
- Salem Almoammar
- Department of Pedodontics and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Muhammad Abdullah Kamran
- Department of Pedodontics and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Abdullah A Alnazeh
- Department of Pedodontics and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Almagbol
- Department of Community and Periodontics, Faculty of Dentistry, King Khalid University, Abha, Saudi Arabia
| | | | - Master Luqman Mannakandath
- Department of Oral Diagnosis and Oral Biology, College of Dentistry, King Khalid University, Abha, Saudi Arabia
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12
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Vazquez R, Motovilova E, Winkler SA. Stretchable Sensor Materials Applicable to Radiofrequency Coil Design in Magnetic Resonance Imaging: A Review. SENSORS (BASEL, SWITZERLAND) 2024; 24:3390. [PMID: 38894182 PMCID: PMC11174967 DOI: 10.3390/s24113390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024]
Abstract
Wearable sensors are rapidly gaining influence in the diagnostics, monitoring, and treatment of disease, thereby improving patient outcomes. In this review, we aim to explore how these advances can be applied to magnetic resonance imaging (MRI). We begin by (i) introducing limitations in current flexible/stretchable RF coils and then move to the broader field of flexible sensor technology to identify translatable technologies. To this goal, we discuss (ii) emerging materials currently used for sensor substrates, (iii) stretchable conductive materials, (iv) pairing and matching of conductors with substrates, and (v) implementation of lumped elements such as capacitors. Applicable (vi) fabrication methods are presented, and the review concludes with a brief commentary on (vii) the implementation of the discussed sensor technologies in MRI coil applications. The main takeaway of our research is that a large body of work has led to exciting new sensor innovations allowing for stretchable wearables, but further exploration of materials and manufacturing techniques remains necessary, especially when applied to MRI diagnostics.
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Affiliation(s)
- Rigoberto Vazquez
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 10065, USA
- Department of Radiology, Weill Cornell Medicine, New York, NY 10065, USA
| | | | - Simone Angela Winkler
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 10065, USA
- Department of Radiology, Weill Cornell Medicine, New York, NY 10065, USA
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13
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Ghandali MV, Safarzadeh S, Ghasemi-Fasaei R, Zeinali S. Heavy metals immobilization and bioavailability in multi-metal contaminated soil under ryegrass cultivation as affected by ZnO and MnO 2 nanoparticle-modified biochar. Sci Rep 2024; 14:10684. [PMID: 38724636 PMCID: PMC11082237 DOI: 10.1038/s41598-024-61270-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 05/03/2024] [Indexed: 05/12/2024] Open
Abstract
Pollution by heavy metals (HMs) has become a global problem for agriculture and the environment. In this study, the effects of pristine biochar and biochar modified with manganese dioxide (BC@MnO2) and zinc oxide (BC@ZnO) nanoparticles on the immobilization and bioavailability of Pb, Cd, Zn, and Ni in soil under ryegrass (Lolium perenne L.) cultivation were investigated. The results of SEM-EDX, FTIR, and XRD showed that ZnO and MnO2 nanoparticles were successfully loaded onto biochar. The results showed that BC, BC@MnO2 and BC@ZnO treatments significantly increased shoots and roots dry weight of ryegrass compared to the control. The maximum dry weight of root and shoot (1.365 g pot-1 and 4.163 g pot-1, respectively) was reached at 1% BC@MnO2. The HMs uptake by ryegrass roots and shoots decreased significantly after addition of amendments. The lowest Pb, Cd, Zn and Ni uptake in the plant shoot (13.176, 24.92, 32.407, and 53.88 µg pot-1, respectively) was obtained in the 1% BC@MnO2 treatment. Modified biochar was more successful in reducing HMs uptake by ryegrass and improving plant growth than pristine biochar and can therefore be used as an efficient and cost effective amendment for the remediation of HMs contaminated soils. The lowest HMs translocation (TF) and bioconcentration factors were related to the 1% BC@MnO2 treatment. Therefore, BC@MnO2 was the most successful treatment for HMs immobilization in soil. Also, a comparison of the TF values of plant showed that ryegrass had a good ability to accumulate all studied HMs in its roots, and it is a suitable plant for HMs phytostabilization.
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Affiliation(s)
| | - Sedigheh Safarzadeh
- Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran.
| | - Reza Ghasemi-Fasaei
- Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran
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14
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Diederichs EV, Mondal D, Patil H, Gorbet M, Willett TL. The effect of triglycerol diacrylate on the printability and properties of UV curable, bio-based nanohydroxyapatite composites. J Mech Behav Biomed Mater 2024; 153:106499. [PMID: 38490049 DOI: 10.1016/j.jmbbm.2024.106499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 03/17/2024]
Abstract
3D printable biopolymer nanocomposites composed of hydroxyapatite nanoparticles and functionalized plant-based monomers demonstrate potential as sustainable and structural biomaterials. To increase this potential, their printability and performance must be improved. For extrusion-based 3D printing, such as Direct Ink Writing (DIW), printability is important for print fidelity. In this work, triglycerol diacrylate (TGDA) was added to an acrylated epoxidized soybean oil:polyethylene glycol diacrylate resin to increase hydrogen bonding. Greater hydrogen bonding was hypothesized to improve printability by increasing the ink's shear yield strength, and therefore shape holding after deposition. The effects of this additive on material and mechanical properties were quantified. Increased hydrogen bonding due to TGDA content increased the ink's shear yield stress and viscosity by 916% and 27.6%, respectively. This resulted in improved printability, with best performance at 3 vol% TGDA. This composition achieved an ultimate tensile strength (UTS) of 32.4 ± 2.1 MPa and elastic modulus of 1.15 ± 0.21 GPa. These were increased from the 0 vol% TGDA composite, which had an UTS of 24.8 ± 1.8 MPa and a modulus of 0.88 ± 0.06 GPa. This study demonstrates the development of bio-based additive manufacturing feedstocks for potential uses in sustainable manufacturing, rapid prototyping, and biomaterial applications.
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Affiliation(s)
- Elizabeth V Diederichs
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Dibakar Mondal
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Haresh Patil
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Maud Gorbet
- Material Interaction with Biological Systems Laboratory, Department of Systems Design, University of Waterloo, Carl A. Pollock Hall, 200 University Avenue West, Waterloo, Canada
| | - Thomas L Willett
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada.
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15
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Qiao J, Song Q, Zhang X, Zhao S, Liu J, Nyström G, Zeng Z. Enhancing Interface Connectivity for Multifunctional Magnetic Carbon Aerogels: An In Situ Growth Strategy of Metal-Organic Frameworks on Cellulose Nanofibrils. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400403. [PMID: 38483033 PMCID: PMC11109645 DOI: 10.1002/advs.202400403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/26/2024] [Indexed: 05/23/2024]
Abstract
Improving interface connectivity of magnetic nanoparticles in carbon aerogels is crucial, yet challenging for assembling lightweight, elastic, high-performance, and multifunctional carbon architectures. Here, an in situ growth strategy to achieve high dispersion of metal-organic frameworks (MOFs)-anchored cellulose nanofibrils to enhance the interface connection quality is proposed. Followed by a facile freeze-casting and carbonization treatment, sustainable biomimetic porous carbon aerogels with highly dispersed and closely connected MOF-derived magnetic nano-capsules are fabricated. Thanks to the tight interface bonding of nano-capsule microstructure, these aerogels showcase remarkable mechanical robustness and flexibility, tunable electrical conductivity and magnetization intensity, and excellent electromagnetic wave absorption performance. Achieving a reflection loss of -70.8 dB and a broadened effective absorption bandwidth of 6.0 GHz at a filling fraction of merely 2.2 wt.%, leading to a specific reflection loss of -1450 dB mm-1, surpassing all carbon-based aerogel absorbers so far reported. Meanwhile, the aerogel manifests high magnetic sensing sensibility and excellent thermal insulation. This work provides an extendable in situ growth strategy for synthesizing MOF-modified cellulose nanofibril structures, thereby promoting the development of high-value-added multifunctional magnetic carbon aerogels for applications in electromagnetic compatibility and protection, thermal management, diversified sensing, Internet of Things devices, and aerospace.
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Affiliation(s)
- Jing Qiao
- Key Laboratory for Liquid‐Solid Structural Evolution and Processing of Materials, School of Materials Science and EngineeringShandong UniversityJinan250061P. R. China
- School of Mechanical EngineeringShandong UniversityJinan250061P. R. China
| | - Qinghua Song
- School of Mechanical EngineeringShandong UniversityJinan250061P. R. China
| | - Xue Zhang
- Key Laboratory for Liquid‐Solid Structural Evolution and Processing of Materials, School of Materials Science and EngineeringShandong UniversityJinan250061P. R. China
| | - Shanyu Zhao
- Laboratory for Building Energy Materials and ComponentsSwiss Federal Laboratories for Materials Science and Technology (Empa)Dübendorf8600Switzerland
| | - Jiurong Liu
- Key Laboratory for Liquid‐Solid Structural Evolution and Processing of Materials, School of Materials Science and EngineeringShandong UniversityJinan250061P. R. China
| | - Gustav Nyström
- Laboratory for Cellulose and Wood MaterialsSwiss Federal Laboratories for Materials Science and Technology (Empa)Dübendorf8600Switzerland
- Department of Health Sciences and TechnologyETH ZürichZürich8092Switzerland
| | - Zhihui Zeng
- Key Laboratory for Liquid‐Solid Structural Evolution and Processing of Materials, School of Materials Science and EngineeringShandong UniversityJinan250061P. R. China
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16
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Petousis M, Michailidis N, Saltas V, Papadakis V, Spiridaki M, Mountakis N, Argyros A, Valsamos J, Nasikas NK, Vidakis N. Mechanical and Electrical Properties of Polyethylene Terephthalate Glycol/Antimony Tin Oxide Nanocomposites in Material Extrusion 3D Printing. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:761. [PMID: 38727355 PMCID: PMC11085549 DOI: 10.3390/nano14090761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/17/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024]
Abstract
In this study, poly (ethylene terephthalate) (PETG) was combined with Antimony-doped Tin Oxide (ATO) to create five different composites (2.0-10.0 wt.% ATO). The PETG/ATO filaments were extruded and supplied to a material extrusion (MEX) 3D printer to fabricate the specimens following international standards. Various tests were conducted on thermal, rheological, mechanical, and morphological properties. The mechanical performance of the prepared nanocomposites was evaluated using flexural, tensile, microhardness, and Charpy impact tests. The dielectric and electrical properties of the prepared composites were evaluated over a broad frequency range. The dimensional accuracy and porosity of the 3D printed structure were assessed using micro-computed tomography. Other investigations include scanning electron microscopy and energy-dispersive X-ray spectroscopy, which were performed to investigate the structures and morphologies of the samples. The PETG/6.0 wt.% ATO composite presented the highest mechanical performance (21% increase over the pure polymer in tensile strength). The results show the potential of such nanocomposites when enhanced mechanical performance is required in MEX 3D printing applications, in which PETG is the most commonly used polymer.
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Affiliation(s)
- Markos Petousis
- Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece; (M.P.); (M.S.); (N.M.); (J.V.)
| | - Nikolaos Michailidis
- Physical Metallurgy Laboratory, Mechanical Engineering Department, School of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.M.); (A.A.)
- Centre for Research & Development of Advanced Materials (CERDAM), Centre for Interdisciplinary Research and Innovation, Balkan Centre, Building B’, 10th km Thessaloniki-Thermi Road, 57001 Thessaloniki, Greece
| | - Vassilis Saltas
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133 Chania, Greece;
| | - Vassilis Papadakis
- Institute of Electronic Structure and Laser of the Foundation for Research and Technology-Hellas (IESL-FORTH)–Hellas, N. Plastira 100m, 70013 Heraklion, Greece;
- Department of Industrial Design and Production Engineering, University of West Attica, 12243 Athens, Greece
| | - Mariza Spiridaki
- Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece; (M.P.); (M.S.); (N.M.); (J.V.)
| | - Nikolaos Mountakis
- Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece; (M.P.); (M.S.); (N.M.); (J.V.)
| | - Apostolos Argyros
- Physical Metallurgy Laboratory, Mechanical Engineering Department, School of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.M.); (A.A.)
- Centre for Research & Development of Advanced Materials (CERDAM), Centre for Interdisciplinary Research and Innovation, Balkan Centre, Building B’, 10th km Thessaloniki-Thermi Road, 57001 Thessaloniki, Greece
| | - John Valsamos
- Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece; (M.P.); (M.S.); (N.M.); (J.V.)
| | - Nektarios K. Nasikas
- Division of Mathematics and Engineering Sciences, Department of Military Sciences, Hellenic Army Academy, Vari, 16673 Attica, Greece;
| | - Nectarios Vidakis
- Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece; (M.P.); (M.S.); (N.M.); (J.V.)
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17
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Liu YM, Shi XL, Wu T, Wu H, Mao Y, Cao T, Wang DZ, Liu WD, Li M, Liu Q, Chen ZG. Boosting thermoelectric performance of single-walled carbon nanotubes-based films through rational triple treatments. Nat Commun 2024; 15:3426. [PMID: 38654020 DOI: 10.1038/s41467-024-47417-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/02/2024] [Indexed: 04/25/2024] Open
Abstract
Single-walled carbon nanotubes (SWCNTs)-based thermoelectric materials, valued for their flexibility, lightweight, and cost-effectiveness, show promise for wearable thermoelectric devices. However, their thermoelectric performance requires significant enhancement for practical applications. To achieve this goal, in this work, we introduce rational "triple treatments" to improve the overall performance of flexible SWCNT-based films, achieving a high power factor of 20.29 µW cm-1 K-2 at room temperature. Ultrasonic dispersion enhances the conductivity, NaBH4 treatment reduces defects and enhances the Seebeck coefficient, and cold pressing significantly densifies the SWCNT films while preserving the high Seebeck coefficient. Also, bending tests confirm structural stability and exceptional flexibility, and a six-legged flexible device demonstrates a maximum power density of 2996 μW cm-2 at a 40 K temperature difference, showing great application potential. This advancement positions SWCNT films as promising flexible thermoelectric materials, providing insights into high-performance carbon-based thermoelectrics.
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Affiliation(s)
- Yuan-Meng Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China
| | - Xiao-Lei Shi
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Ting Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China
| | - Hao Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China
| | - Yuanqing Mao
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD, Australia
- Department of Physics and Guangdong Provincial Key Laboratory of Computational Science and Material Design, Southern University of Science and Technology, Shenzhen, China
| | - Tianyi Cao
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - De-Zhuang Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China
| | - Wei-Di Liu
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Meng Li
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Qingfeng Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China.
| | - Zhi-Gang Chen
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, Australia.
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18
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Cordoba A, Cauich-Rodríguez JV, Vargas-Coronado RF, Velázquez-Castillo R, Esquivel K. A Novel In Situ Sol-Gel Synthesis Method for PDMS Composites Reinforced with Silica Nanoparticles. Polymers (Basel) 2024; 16:1125. [PMID: 38675044 PMCID: PMC11053487 DOI: 10.3390/polym16081125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/10/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The addition of nanostructures to polymeric materials allows for a direct interaction between polymeric chains and nanometric structures, resulting in a synergistic process through the physical (electrostatic forces) and chemical properties (bond formation) of constituents for the modification of their properties and potential cutting-edge materials. This study explores a novel in situ synthesis method for PDMS-%SiO2 nanoparticle composites with varying crosslinking degrees (PDMS:TEOS of 15:1, 10:1, and 5:1); particle concentrations (5%, 10%, and 15%); and sol-gel catalysts (acidic and alkaline). This investigation delves into the distinct physical and chemical properties of silicon nanoparticles synthesized under acidic (SiO2-a) and alkaline (SiO2-b) conditions. A characterization through Raman, FT-IR, and XPS analyses confirms particle size and agglomeration differences between both the SiO2-a and SiO2-b particles. Similar chemical environments, with TEOS and ethanol by-products, were detected for both systems. The results on polymer composites elucidate the successful incorporation of SiO2 nanoparticles into the PDMS matrix without altering the PDMS's chemical structure. However, the presence of nanoparticles did affect the relative intensities of specific vibrational modes over composites from -35% to 24% (Raman) and from -14% to 59% (FT-IR). The XPS results validate the presence of Si, O, and C in all composites, with significant variations in atomic proportions (C/Si and O/Si) and Si and C component analyses through deconvolution techniques. This study demonstrates the successful in situ synthesis of PDMS-SiO2 composites with tunable properties by controlling the sol-gel and crosslinking synthesis parameters. The findings provide valuable insights into the in situ synthesis methods of polymeric composite materials and their potential integration with polymer nanocomposite processing techniques.
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Affiliation(s)
- Aldo Cordoba
- Graduate and Research Division, Engineering Faculty, Universidad Autónoma de Querétaro, Cerro de las Campanas, Queretaro 76010, Mexico; (A.C.); (R.V.-C.)
| | - Juan Valerio Cauich-Rodríguez
- Centro de Investigación Científica de Yucatán, Unidad de Materiales, C. 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Merida 97205, Mexico; (J.V.C.-R.); (R.F.V.-C.)
| | - Rossana Faride Vargas-Coronado
- Centro de Investigación Científica de Yucatán, Unidad de Materiales, C. 43 No. 130 x 32 y 34, Col. Chuburná de Hidalgo, Merida 97205, Mexico; (J.V.C.-R.); (R.F.V.-C.)
| | - Rodrigo Velázquez-Castillo
- Graduate and Research Division, Engineering Faculty, Universidad Autónoma de Querétaro, Cerro de las Campanas, Queretaro 76010, Mexico; (A.C.); (R.V.-C.)
| | - Karen Esquivel
- Graduate and Research Division, Engineering Faculty, Universidad Autónoma de Querétaro, Cerro de las Campanas, Queretaro 76010, Mexico; (A.C.); (R.V.-C.)
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19
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Collado I, Jiménez-Suárez A, Vázquez-López A, del Rosario G, Prolongo SG. Ultrasonication Influence on the Morphological Characteristics of Graphene Nanoplatelet Nanocomposites and Their Electrical and Electromagnetic Interference Shielding Behavior. Polymers (Basel) 2024; 16:1068. [PMID: 38674988 PMCID: PMC11054555 DOI: 10.3390/polym16081068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Graphene nanoplatelets (GNPs)/epoxy composites have been fabricated via gravity molding. The electrical and thermal properties of the composites have been studied with variable GNP type (C300, C500, and C750, whose surface areas are ~300, 500, and 750 m2/g, respectively), GNP loading (5, 10, 12, and 15 wt.%), and dispersion time via ultrasonication (0, 30, 60, and 120 min). By increasing the time of sonication of the GNP into the epoxy matrix, the electrical conductivity decreases, which is an effect of GNP fragmentation. The best results were observed with 10-12% loading and a higher surface area (C750), as they provide higher electrical conductivity, thereby preserving thermal conductivity. The influence of sonication over electrical conductivity was further analyzed via the study of the composite morphology by means of Raman spectroscopy and X-ray diffraction (XRD), providing information about the aspect ratio of GNPs. Moreover, electromagnetic shielding (EMI) has been studied up to 4 GHz. Composites with C750 and 120 min ultrasonication show the best performance in EMI shielding, influenced by their higher electrical conductivity.
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Affiliation(s)
- Ignacio Collado
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, University Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain; (A.J.-S.); (S.G.P.)
| | - Alberto Jiménez-Suárez
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, University Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain; (A.J.-S.); (S.G.P.)
| | - Antonio Vázquez-López
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, University Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain; (A.J.-S.); (S.G.P.)
| | - Gilberto del Rosario
- Technological Support Center, University Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain;
| | - Silvia G. Prolongo
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, University Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain; (A.J.-S.); (S.G.P.)
- Instituto de Tecnologías para la Sostenibilidad, Universidad Rey Juan Carlos, Tulipán Street, 28933 Móstoles, Madrid, Spain
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20
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Khoman GA, Kalijaga MHA, Aisah N, Fidyaningsih R, Raharjo J, Arjasa OP, Prajatelistia E. PMMA bone cement with L-arginine/nano fish bone nanocomplex for apatite formation. ROYAL SOCIETY OPEN SCIENCE 2024; 11:231694. [PMID: 38545617 PMCID: PMC10966394 DOI: 10.1098/rsos.231694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/23/2024] [Accepted: 01/31/2024] [Indexed: 04/26/2024]
Abstract
Bone cement is one of the materials used in orthopaedics that serves various functions, such as binding bone implants, replacing damaged bones and filling spaces within bones. Various materials have been used to synthesize bone cement, and one promising material for further research is fish bone waste-based bone cement. This study investigates the potential of fish bone waste-based bone cement by incorporating nano fish bone (NFB) and L-arginine (L-Arg) protein into polymethyl methacrylate (PMMA) to examine apatite growth. NFB derived from the Salmo salar fish positively influences osteoblast cell proliferation and differentiation, while L-Arg enhances biocompatibility and antibiotic properties. The NFB/L-Arg combination holds promise in accelerating new bone formation and cell growth, both of which are crucial for fracture healing and bone remodelling. Tensile strength tests reveal the superior performance of BC-PMMA-1-NFB/L-Arg (36.11 MPa) compared with commercial PMMA (32 MPa). Immersion tests with simulated body fluid (SBF) solution for 7 days reveal accelerated apatite layer formation, emphasizing the potential benefits of NFB/L-Arg in bone cement applications.
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Affiliation(s)
- Gessica Aurel Khoman
- Materials Science and Engineering Study Program, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung40132, Indonesia
| | - Muhammad Harza Arbaha Kalijaga
- Materials Science and Engineering Study Program, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung40132, Indonesia
| | - Nuning Aisah
- Advanced Material Research Center, National Research and Innovation Agency (BRIN), Kawasan Puspiptek Setu Serpong, South Tangerang, Banten15314, Indonesia
| | - Riastuti Fidyaningsih
- Advanced Material Research Center, National Research and Innovation Agency (BRIN), Kawasan Puspiptek Setu Serpong, South Tangerang, Banten15314, Indonesia
| | - Jarot Raharjo
- Advanced Material Research Center, National Research and Innovation Agency (BRIN), Kawasan Puspiptek Setu Serpong, South Tangerang, Banten15314, Indonesia
| | - Oka P. Arjasa
- Advanced Material Research Center, National Research and Innovation Agency (BRIN), Kawasan Puspiptek Setu Serpong, South Tangerang, Banten15314, Indonesia
| | - Ekavianty Prajatelistia
- Materials Science and Engineering Study Program, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung40132, Indonesia
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21
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Abuzeid MA, Bassuoni MT, Sakr MR. Effect of Polymer/Nano-Clay Coatings on the Performance of Concrete with High-Content Supplementary Cementitious Materials under Harsh Exposures. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1030. [PMID: 38473502 DOI: 10.3390/ma17051030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
In recent concrete research, a novel category of coatings has emerged: polymers/nanoparticles blends. The efficacy of such coatings warrants extensive examination across various concrete mixtures, particularly those incorporating high-volume supplementary cementitious materials (SCMs) to mitigate carbon footprints, an industry imperative. This study used three vulnerable concrete mixtures to assess the effectiveness of ethyl silicate and high-molecular-weight methyl methacrylate blended with 2.5% and 5% halloysite and montmorillonite nano-clay. Findings from physical, thermal, and microstructural analyses confirmed vulnerabilities in concretes with a high water-to-binder ratio (0.6) under severe exposure conditions, notably with high SCM content (40% and 60% fly ash and slag, respectively). Neat ethyl silicate or high-molecular-weight methyl methacrylate coatings inadequately protected those concretes against physical salt attacks and salt-frost scaling exposures. However, the incorporation of halloysite nano-clay or montmorillonite nano-clay in these polymers yielded moderate-to-superior concrete protection compared to neat coatings. Ethyl silicate-based nanocomposites provided full protection, achieving up to 100% improvement (no or limited surface scaling) against both exposures, particularly when incorporating halloysite-based nano-clay at a 2.5% dosage by mass. In contrast, high-molecular-weight methyl methacrylate-based nano-clay composites effectively mitigated physical salt attacks but exhibited insufficient protection throughout the entire salt-frost scaling exposure, peeling off at 15 cycles.
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Affiliation(s)
- M A Abuzeid
- Department of Civil Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada
| | - M T Bassuoni
- Department of Civil Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada
| | - M R Sakr
- Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo 11629, Egypt
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22
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Abedi M, Ghasemi Y, Nemati MM. Nanotechnology in toothpaste: Fundamentals, trends, and safety. Heliyon 2024; 10:e24949. [PMID: 38317872 PMCID: PMC10838805 DOI: 10.1016/j.heliyon.2024.e24949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
Several studies have revealed that healthcare nanomaterials are widely used in numerous areas of dentistry, including prevention, diagnosis, treatment, and repair. Nanomaterials in dental cosmetics are utilized to enhance the efficacy of toothpaste and other mouthwashes. Nanoparticles are added to toothpastes for a variety of reasons, including dental decay prevention, remineralization, hypersensitivity reduction, brightening, and antibacterial qualities. In this review, the benefits and uses of many common nanomaterials found in toothpaste are outlined. Additionally, the capacity and clinical applications of nanoparticles as anti-bacterial, whitening, hypersensitivity, and remineralizing agents in the treatment of dental problems and periodontitis are discussed.
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Affiliation(s)
- Mehdi Abedi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mehdi Nemati
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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23
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Gupta S, Sohail T, Checa M, Rohewal SS, Toomey MD, Kanbargi N, Damron JT, Collins L, Kearney LT, Naskar AK, Bowland CC. Enhancing Composite Toughness Through Hierarchical Interphase Formation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305642. [PMID: 38145356 PMCID: PMC10853716 DOI: 10.1002/advs.202305642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/08/2023] [Indexed: 12/26/2023]
Abstract
High strength and ductility are highly desired in fiber-reinforced composites, yet achieving both simultaneously remains elusive. A hierarchical architecture is developed utilizing high aspect ratio chemically transformable thermoplastic nanofibers that form covalent bonding with the matrix to toughen the fiber-matrix interphase. The nanoscale fibers are electrospun on the micrometer-scale reinforcing carbon fiber, creating a physically intertwined, randomly oriented scaffold. Unlike conventional covalent bonding of matrix molecules with reinforcing fibers, here, the nanofiber scaffold is utilized - interacting non-covalently with core fiber but bridging covalently with polymer matrix - to create a high volume fraction of immobilized matrix or interphase around core reinforcing elements. This mechanism enables efficient fiber-matrix stress transfer and enhances composite toughness. Molecular dynamics simulation reveals enhancement of the fiber-matrix adhesion facilitated by nanofiber-aided hierarchical bonding with the matrix. The elastic modulus contours of interphase regions obtained from atomic force microscopy clearly indicate the formation of stiffer interphase. These nanoengineered composites exhibit a ≈60% and ≈100% improved in-plane shear strength and toughness, respectively. This approach opens a new avenue for manufacturing toughened high-performance composites.
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Affiliation(s)
- Sumit Gupta
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Tanvir Sohail
- Advanced Computing for Chemistry and Materials GroupNational Center for Computational SciencesOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Marti Checa
- Functional Atomic Force Microscope GroupCenter for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Sargun S. Rohewal
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Michael D. Toomey
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Nihal Kanbargi
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Joshua T. Damron
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Liam Collins
- Functional Atomic Force Microscope GroupCenter for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Logan T. Kearney
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Amit K. Naskar
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
| | - Christopher C. Bowland
- Carbon and Composites GroupChemical Sciences DivisionOak Ridge National LaboratoryOak RidgeTN37830USA
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24
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Mohammadi S, Jabbari F, Cidonio G, Babaeipour V. Revolutionizing agriculture: Harnessing nano-innovations for sustainable farming and environmental preservation. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 198:105722. [PMID: 38225077 DOI: 10.1016/j.pestbp.2023.105722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/23/2023] [Accepted: 12/02/2023] [Indexed: 01/17/2024]
Abstract
The agricultural sector is currently confronted with a significant crisis stemming from the rapid changes in climate patterns, declining soil fertility, insufficient availability of essential macro and micronutrients, excessive reliance on chemical fertilizers and pesticides, and the presence of heavy metals in soil. These numerous challenges pose a considerable threat to the agriculture industry. Furthermore, the exponential growth of the global population has led to a substantial increase in food consumption, further straining agricultural systems worldwide. Nanotechnology holds great promise in revolutionizing the food and agriculture industry, decreasing the harmful effects of agricultural practices on the environment, and improving productivity. Nanomaterials such as inorganic, lipid, and polymeric nanoparticles have been developed for increasing productivity due to their unique properties. Various strategies can enhance product quality, such as the use of nano-clays, nano zeolites, and hydrogel-based materials to regulate water absorption and release, effectively mitigating water scarcity. The production of nanoparticles can be achieved through various methods, each of which has its own unique benefits and limitations. Among these methods, chemical synthesis is widely favored due to the impact that various factors such as concentration, particle size, and shape have on product quality and efficiency. This review provides a detailed examination of the roles of nanotechnology and nanoparticles in sustainable agriculture, including their synthetic methods, and presents an analysis of their associated advantages and disadvantages. To date, there are serious concerns and awareness about healthy agriculture and the production of healthy products, therefore the development of nanotech-enabled devices that act as preventive and early warning systems to identify health issues, offering remedial measures is necessary.
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Affiliation(s)
- Sajad Mohammadi
- Center for Life Nano & Neuro-Science (CLN(2)S), Italian Institute of Technology (IIT), 00161 Rome, Italy; Department of Basic and Applied Science for Engineering, Sapienza University of Rome, Italy
| | - Farzaneh Jabbari
- Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Tehran 14155-4777, Iran
| | - Gianluca Cidonio
- Center for Life Nano & Neuro-Science (CLN(2)S), Italian Institute of Technology (IIT), 00161 Rome, Italy
| | - Valiollah Babaeipour
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran 14155-4777, Iran.
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25
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De Silva ND, Attanayake AP, Karunaratne DN, Arawwawala LDAM, Pamunuwa GK. Synthesis and bioactivity assessment of Coccinia grandis L. extract encapsulated alginate nanoparticles as an antidiabetic drug lead. J Microencapsul 2024; 41:1-17. [PMID: 37966469 DOI: 10.1080/02652048.2023.2282964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/09/2023] [Indexed: 11/16/2023]
Abstract
AIM This study aimed to prepare, characterise, and evaluate the antidiabetic activity of Coccinia grandis (L.) extracts encapsulated alginate nanoparticles. METHODS Alginate nanoparticles were prepared using the ionic gelation method and characterised by encapsulation efficiency %w/w, loading capacity %w/w, particle size analysis, zeta potential, Fourier transform infra-red spectroscopy (FTIR), and scanning electron microscopy (SEM). In vitro antidiabetic activity was also evaluated. RESULTS Encapsulation efficiency %w/w, loading capacity %w/w, mean diameter, zeta potential of C. grandis encapsulated alginate nanoparticles ranged from 10.51 ± 0.51 to 62.01 ± 1.28%w/w, 0.39 ± 0.04 to 3.12 ± 0.11%w/w, 191.9 ± 76.7 to 298.9 ± 89.6 nm, -21.3 ± 3.3 to -28.4 ± 3.4 mV, respectively. SEM and FTIR confirmed that particles were in nano range with spherical shape and successful encapsulation of plant extracts into an alginate matrix. The antidiabetic potential of aqueous extract of C. grandis encapsulated alginate nanoparticles (AqCG-ANP) exhibited inhibition in α-amylase, α-glucosidase and dipeptidyl peptidase IV enzymes of 60.8%c/c, 19.1%c/c, and 30.3%c/c, respectively, compared to the AqCG. CONCLUSION The AqCG-ANP exerted promising antidiabetic potential as an antidiabetic drug lead.
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Affiliation(s)
| | | | | | | | - Geethi Kaushalya Pamunuwa
- Department of Horticulture and Landscape Gardening, Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, Sri Lanka
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26
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Gallicchio V, Spinelli V, Russo T, Marino C, Spagnuolo G, Rengo C, De Santis R. Highly Reinforced Acrylic Resins for Hard Tissue Engineering and Their Suitability to Be Additively Manufactured through Nozzle-Based Photo-Printing. MATERIALS (BASEL, SWITZERLAND) 2023; 17:37. [PMID: 38203891 PMCID: PMC10779947 DOI: 10.3390/ma17010037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Mineralized connective tissues represent the hardest materials of human tissues, and polymer based composite materials are widely used to restore damaged tissues. In particular, light activated resins and composites are generally considered as the most popular choice in the restorative dental practice. The first purpose of this study is to investigate novel highly reinforced light activated particulate dental composites. An innovative additive manufacturing technique, based on the extrusion of particle reinforced photo-polymers, has been recently developed for processing composites with a filler fraction (w/w) only up to 10%. The second purpose of this study is to explore the feasibility of 3D printing highly reinforced composites. A variety of composites based on 2,2-bis(acryloyloxymethyl)butyl acrylate and trimethylolpropane triacrylate reinforced with silica, titanium dioxide, and zirconia nanoparticles were designed and investigated through compression tests. The composite showing the highest mechanical properties was processed through the 3D bioplotter AK12 equipped with the Enfis Uno Air LED Engine. The composite showing the highest stiffness and strength was successfully processed through 3D printing, and a four-layer composite scaffold was realized. Mechanical properties of particulate composites can be tailored by modifying the type and amount of the filler fraction. It is possible to process highly reinforced photopolymerizable composite materials using additive manufacturing technologies consisting of 3D fiber deposition through extrusion in conjunction with photo-polymerization.
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Affiliation(s)
- Vito Gallicchio
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (V.G.); (V.S.); (G.S.)
| | - Vincenzo Spinelli
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (V.G.); (V.S.); (G.S.)
| | - Teresa Russo
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54, Mostra d’Oltremare Pad. 20, 80125 Naples, Italy;
| | - Ciro Marino
- University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy;
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (V.G.); (V.S.); (G.S.)
| | - Carlo Rengo
- Department of Prosthodontics and Dental Materials, University of Siena, 53100 Siena, Italy;
| | - Roberto De Santis
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54, Mostra d’Oltremare Pad. 20, 80125 Naples, Italy;
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27
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Han J, Tong XY, Rao CY, Ouyang JM, Gui BS. Size-Dependent Cytotoxicity, Adhesion, and Endocytosis of Micro-/Nano-hydroxyapatite Crystals in HK-2 Cells. ACS OMEGA 2023; 8:48432-48443. [PMID: 38144057 PMCID: PMC10733994 DOI: 10.1021/acsomega.3c08180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/19/2023] [Accepted: 11/24/2023] [Indexed: 12/26/2023]
Abstract
Nano-hydroxyapatite (nano-HAP) is often used as a crystal nest to induce calcium oxalate (CaOx) kidney stone formation, but the mechanism of interaction between HAP crystals of different properties and renal tubular epithelial cells remains unclear. In this study, the adhesion and endocytosis of HAP crystals with sizes of 40 nm, 70 nm, 1 μm, and 2 μm (HAP-40 nm, HAP-70 nm, HAP-1 μm, and HAP-2 μm, respectively) to human renal proximal tubular epithelial cells (HK-2) were comparatively studied. The results showed that HAP crystals of all sizes promoted the expression of osteopontin and hyaluronic acid on the cell surface, destroyed the integrity of the lysosomes, and induced the apoptosis and necrosis of cells. Nano-HAP crystals had a higher specific surface area, a smaller contact angle, a higher surface energy, and a lower Zeta potential than those of micro-HAP. Therefore, the abilities of HK-2 cells to adhere to and endocytose nano-HAP crystals were greater than their abilities to do the same for micro-HAP crystals. The order of the endocytosed crystals was as follows: HAP-40 nm > HAP-70 nm > HAP-1 μm > HAP-2 μm. The endocytosed HAP crystals entered the lysosomes. The more crystal endocytosis and adhesion there is, the more toxic it is to HK-2 cells. The results of this study showed that nanosized HAP crystals greatly promoted the formation of kidney stones than micrometer-sized HAP crystals.
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Affiliation(s)
- Jin Han
- Department
of Nephrology, The Second Affiliated Hospital, Xi’an Jiaotong University, Xi’an 710004, China
| | - Xin-Yi Tong
- Department
of Chemistry, Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou, Guangdong 510632, China
| | - Chen-Ying Rao
- Department
of Chemistry, Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou, Guangdong 510632, China
| | - Jian-Ming Ouyang
- Department
of Chemistry, Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou, Guangdong 510632, China
| | - Bao-Song Gui
- Department
of Nephrology, The Second Affiliated Hospital, Xi’an Jiaotong University, Xi’an 710004, China
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28
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Shah AUR, Jalil A, Sadiq A, Alzaid M, Naseem MS, Alanazi R, Alanazi S, Alanzy AO, Alsohaimi IH, Malik RA. Effect of Rice Husk and Wood Flour on the Structural, Mechanical, and Fire-Retardant Characteristics of Recycled High-Density Polyethylene. Polymers (Basel) 2023; 15:4031. [PMID: 37836079 PMCID: PMC10575034 DOI: 10.3390/polym15194031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Given the rising consumption of plastic products, it is becoming imperative to prioritize the recycling of plastic items as a solution to reducing plastic waste and environmental pollution. In this context, this research focuses on assessing the impact of incorporating rice husk and wood flour into recycled high-density polyethylene (rec-HDPE) to analyze its mechanical properties, flammability, and thermal stability. The combined rec-HDPE content of wood flour and rice husk varied between 0% and 20%. The rec-HDPE content of maleic anhydride grafted polyethylene (MAPE) was fixed at 3%. Mechanical characteristics such as flexural, tensile, and impact strengths were assessed. Cone calorimetry (CC) tests, limited oxygen index (LOI) tests, and horizontal and vertical burning tests were performed to determine the flammability or fire retardancy of these composites. On the other hand, to characterize the thermal characteristics of these composites, thermogravimetric analysis (TGA) was used. To further characterize the fluctuation in these characteristics, scanning electron microscopy (SEM) and infrared spectroscopy (FTIR) studies were carried out. The mechanical characteristics were found to be increased in response to adding rice husk or wood flour. An 8% increase in tensile strength and a 20% increase in elastic modulus enhancement were recorded for a 20% rice husk-added composite. SEM revealed the reason for the variation in tensile properties, based on the extent of agglomeration and the extent of uniform distribution of fillers in rec-HDPE. Following these lines, the 20% rice husk-added composite also showed a maximum increase of around 6% in its flexural strength and a maximum increase of 50% in its flexural modulus. A decrease in impact strength was recorded for rice husk and wood flour-reinforced composites, compared with unreinforced rec-HDPE. Hybrid composites displayed a lack of mechanical strength due to changes in their nature. FTIR tests were performed for a much more elaborate analysis to confirm these results. Twenty percent of rice husk-added rec-HDPE displayed the best thermal properties that were tested, based on TGA and derivative thermogravimetric (DTG) analysis. This 20% composite also displayed the best fire-retardancy characteristics according to UL 94 tests, cone calorimetry tests, and limited oxygen index tests, due to the barrier created by the silica protective layer. These tests demonstrated that the incorporation of both fillers-rice husk and wood flour-effectively enhanced the thermal, mechanical, and fire-retardant attributes of recycled HDPE.
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Affiliation(s)
- Atta Ur Rehman Shah
- Department of Mechanical Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt 47040, Pakistan
| | - Abdul Jalil
- Department of Mechanical Engineering, HITEC University, Taxila 47050, Pakistan
| | - Atiya Sadiq
- Department of Mechanical Engineering, HITEC University, Taxila 47050, Pakistan
| | - Meshal Alzaid
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Muhammad Shoaib Naseem
- Department of Mechanical Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt 47040, Pakistan
| | - Rakan Alanazi
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Sultan Alanazi
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Abdullatyf Obaid Alanzy
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Ibrahim Hotan Alsohaimi
- Department of Chemistry, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia;
| | - Rizwan Ahmed Malik
- Department of Metallurgy & Materials Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology, Taxila 47050, Pakistan;
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29
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Siddiki AKMNA, Lin J, Balkus KJ. Encapsulation of ZnO and Ho:ZnO Nanoparticles in the Core of Wrinkled Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12956-12965. [PMID: 37647154 DOI: 10.1021/acs.langmuir.3c02225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Wrinkled mesoporous silica (WMS) has a flower- or dendritic-like morphology, tunable pore size, and highly ordered and accessible three-dimensional (3D) pore structures. In this research, a method to encapsulate semiconductor nanoparticles in the core of the wrinkled mesoporous silica during synthesis is described. Highly uniform zinc oxide and holmium-doped zinc oxide nanoparticles have been synthesized by a sonochemical method. Zinc oxide and holmium-doped zinc oxide nanoparticles have been encapsulated in wrinkled mesoporous silica during synthesis. The ZnO@WMS and Ho:ZnO@WMS particles have been characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-vis spectroscopy, fluorescence, dynamic light scattering (DLS), confocal microscopy, and X-ray diffraction (XRD).
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Affiliation(s)
- A K M Nur Alam Siddiki
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
| | - Jason Lin
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
| | - Kenneth J Balkus
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
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30
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Kim KH, Bhujel R, Maharjan R, Lee JC, Jung HS, Kim HJ, Kim NA, Jeong SH. Biophysical characterization of siRNA-loaded lipid nanoparticles with different PEG content in an aqueous system. Eur J Pharm Biopharm 2023; 190:150-160. [PMID: 37516315 DOI: 10.1016/j.ejpb.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/15/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Although lipid nanoparticles (LNP) are potential carriers of various pharmaceutical ingredients, further investigation for maintaining their stability under various environmental stressors must be performed. This study evaluated the influence of PEGylation and stress conditions on the stability of siRNA-loaded LNPs with different concentrations of PEG (0.5 mol%; 0.5 % PEG-LNP and 1.0 mol%; 1.0 % PEG-LNP) anchored to their surface. We applied end-over-end agitation, elevated temperature, and repeated freeze and thaw (F/T) cycles as physicochemical stressors of pH and ionic strength. Dynamic light scattering (DLS), flow imaging microscopy (FIM), and ionic-exchange chromatography (IEX) were to determine the degree of aggregation and change in siRNA content. The results indicate that 0.5 % PEG-LNP resisted aggregation only at low pH levels or with salt, whereas 1.0 % PEG-LNP had increased colloidal stability except at pH 4. 0.5 % PEG-LNP withstood aggregation until 71 °C and three cycles of F/T. In contrast, 1.0 % PEG-LNP maintained colloidal stability at 90 °C and seven F/T cycles. Moreover, 1.0 % PEG-LNP had higher siRNA stability under all stress conditions. Therefore, to ensure the stability of LNP and encapsulated siRNA, the PEG concentration must be carefully controlled while considering LNPs' colloidal instability mechanisms under various stress conditions.
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Affiliation(s)
- Ki Hyun Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Ripesh Bhujel
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Ravi Maharjan
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Jae Chul Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Hun Soon Jung
- EnhancedBio Inc. R&D Center, Seoul 04779, Republic of Korea.
| | - Hye Jeong Kim
- EnhancedBio Inc. R&D Center, Seoul 04779, Republic of Korea.
| | - Nam Ah Kim
- College of Pharmacy, Mokpo National University, Jeonnam 58554, Republic of Korea.
| | - Seong Hoon Jeong
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
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31
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Abd-Elraoof WA, Tayel AA, El-Far SW, Walid Abukhatwah OM, Diab AM, Abonama OM, Assas MA, Abdella A. Characterization and antimicrobial activity of a chitosan-selenium nanocomposite biosynthesized using Posidonia oceanica. RSC Adv 2023; 13:26001-26014. [PMID: 37664190 PMCID: PMC10472372 DOI: 10.1039/d3ra04288j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/25/2023] [Indexed: 09/05/2023] Open
Abstract
Nanobiotechnological approaches can provide effective solutions for overcoming food products' contamination and spoilage. The development of rapid and eco-friendly approaches for synthesizing nanocomposites from chitosan nanoparticles (Cht), Neptune grass "Posidonia oceanica" extract (NG), and NG-mediated selenium nanoparticles (SeNPs) was targeted, with their investigation as potential antimicrobial, antioxidant, and biopreservatives of fresh chicken fillets. SeNPs were biosynthesized with NG, and their conjugates with Cht were composited. Characterization approaches, including infrared analysis, physiognomic analysis, and electron microscopy of synthesized nanomaterials and composites, were applied. The nanomaterials' antibacterial properties were assessed against Staphylococcus aureus, Salmonella typhimurium, and Escherichia coli qualitatively, quantitatively, and with ultrastructure imaging. The antimicrobial and antioxidant potentialities of nanomaterials were employed for preserving chicken fillets, and the sensorial and microbiological parameters were assessed for coated fillets. SeNPs were effectively biosynthesized by NG, with mean diameters of 12.41 nm; the NG/SeNPs had homogenous spherical shapes with good distribution. The prepared Cht/NG/SeNPs nanoconjugates had a mean diameter of 164.61 nm, semi-spherical or smooth structures, and charges of +21.5 mV. The infrared analyses revealed the involvement of biochemical groups in nanomaterial biosynthesis and interactions. The antibacterial actions of nanomaterials were proven against the entire challenged strains; Cht/NG/SeNPs was the most active agent, and Salmonella typhimurium was the most susceptible bacteria. Scanning micrographs of Cht/NG/SeNPs-treated Staphylococcus aureus and Salmonella typhimurium indicate the severe time-dependent destruction of bacterial cells within 8 h of exposure. The antioxidant potentiality of Cht/NG/SeNPs was the highest (91.36%), followed by NG/SeNPs (79.45%). The chicken fillets' coating with Cht, NG, NG/SeNPs, and Cht/NG/SeNPs resulted in a remarkable reduction in microbial group count and raised the sensorial attributes of coated fillets after 14 days of cold storage, with increased potentialities in the order: Cht/NG/SeNPs > NG/SeNPs > NG > Cht > control. The inventive, facile biosynthesis of Cht, NG, and SeNPs could provide effective antimicrobial and antioxidant nanocomposites for prospective applications in food biopreservation.
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Affiliation(s)
- Wessam A Abd-Elraoof
- Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University Kafr El Sheikh city 33516 Egypt
| | - Ahmed A Tayel
- Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University Kafr El Sheikh city 33516 Egypt
| | - Shaymaa W El-Far
- Department of Pharmaceutics and Industrial Pharmacy, Division of Pharmaceutical Microbiology, College of Pharmacy, Taif University Taif 21944 Saudi Arabia
| | | | - Amany M Diab
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University Kafr El Sheikh city 33516 Egypt
| | - Osama M Abonama
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City El-Sadat City 22857 Egypt
| | - Mona A Assas
- Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University Kafr El Sheikh city 33516 Egypt
| | - Asmaa Abdella
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City El-Sadat City 22857 Egypt
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32
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Latko-Durałek P, Rzempołuch J, Staniszewska M, Rosłoniec K, Bil M, Kozera R, Boczkowska A. The Antifungal Fibers of Polyamide 12 Containing Silver and Metal Oxides. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5837. [PMID: 37687530 PMCID: PMC10488922 DOI: 10.3390/ma16175837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/15/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023]
Abstract
The textile market is a vast industry that utilizes antimicrobial polymeric materials, including various types of fabrics, for medical and personal protection applications. Therefore, this study focused on examining four types of antimicrobial fillers, namely, metal oxides (zinc, titanium, copper) and nanosilver, as fillers in Polyamide 12 fibers. These fillers can be applied in the knitting or weaving processes to obtain woven polymeric fabrics for medical applications. The production of the fibers in this study involved a two-step approach: twin-screw extrusion and melt spinning. The resulting fibers were then characterized for their thermal properties (TGA, DSC), mechanical performance (tensile test, DMA), and antifungal activity. The findings of the study indicated that all of the fibers modified with fillers kill Candida albicans. However, the fibers containing a combination of metal oxides and silver showed significantly higher antifungal activity (reduction rate % R = 86) compared to the fibers with only a mixture of metal oxides (% R = 21). Furthermore, the inclusion of metal oxides and nanosilver in the Polyamide 12 matrix hindered the formation of the crystal phase and decreased slightly the thermal stability and mechanical properties, especially for the composites with nanosilver. It was attributed to their worse dispersion and the presence of agglomerates.
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Affiliation(s)
- Paulina Latko-Durałek
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141 Street, 02-507 Warsaw, Poland; (J.R.); (R.K.); (A.B.)
| | - Józef Rzempołuch
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141 Street, 02-507 Warsaw, Poland; (J.R.); (R.K.); (A.B.)
| | - Monika Staniszewska
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19 Street, 02-822 Warsaw, Poland; (M.S.); (K.R.); (M.B.)
| | - Karina Rosłoniec
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19 Street, 02-822 Warsaw, Poland; (M.S.); (K.R.); (M.B.)
| | - Monika Bil
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19 Street, 02-822 Warsaw, Poland; (M.S.); (K.R.); (M.B.)
| | - Rafał Kozera
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141 Street, 02-507 Warsaw, Poland; (J.R.); (R.K.); (A.B.)
| | - Anna Boczkowska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141 Street, 02-507 Warsaw, Poland; (J.R.); (R.K.); (A.B.)
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Salaris V, San Félix García-Obregón I, López D, Peponi L. Fabrication of PLA-Based Electrospun Nanofibers Reinforced with ZnO Nanoparticles and In Vitro Degradation Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2236. [PMID: 37570553 PMCID: PMC10420940 DOI: 10.3390/nano13152236] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023]
Abstract
In this work, electrospun nanofibers based on polylactic acid, PLA, reinforced with ZnO nanoparticles have been studied, considering the growing importance of electrospun mats based on biopolymers for their applications in different fields. Specifically, electrospun nanofibers based on PLA have been prepared by adding ZnO nanoparticles at different concentrations, such as 0.5, 1, 3, 5, 10 and 20 wt%, with respect to the polymer matrix. The materials have been characterized in terms of their morphological, mechanical, and thermal properties, finding 3 wt% as the best concentration to produce PLA nanofibers reinforced with ZnO nanoparticles. In addition, hydrolytic degradation in phosphate buffer solution (PBS) was carried out to study the effect of ZnO nanoparticles on the degradation behavior of PLA-based electrospun nanofiber mats, obtaining an acceleration in the degradation of the PLA electrospun mat.
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Affiliation(s)
| | | | - Daniel López
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain; (V.S.); (I.S.F.G.-O.)
| | - Laura Peponi
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain; (V.S.); (I.S.F.G.-O.)
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34
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Chircov C, Bîrcă AC, Dănciulescu LA, Neacșu IA, Oprea OC, Trușcă RD, Andronescu E. Usnic Acid-Loaded Magnetite Nanoparticles-A Comparative Study between Synthesis Methods. Molecules 2023; 28:5198. [PMID: 37446861 DOI: 10.3390/molecules28135198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Since cancer is a continuously increasing concern for the general population, more efficient treatment alternatives ought to be developed. In this regard, a promising direction is represented by the use of magnetite nanoparticles (MNPs) to act both as a nanocarrier for the targeted release of antitumoral drugs and as hyperthermia agents. Thus, the present study focused on improving the control upon the outcome properties of MNPs by using two synthesis methods, namely the co-precipitation and microwave-assisted hydrothermal method, for the incorporation of usnic acid (UA), a natural lichen-derived metabolite with proven anticancer activity. The obtained UA-loaded MNPs were thoroughly characterized regarding their morpho-structural and physicochemical properties through X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS) and zeta potential, scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM). Results demonstrated the formation of magnetite as the unique mineralogical phase through both types of synthesis, with increased uniformity regarding the drug loading efficiency, size, stability, and magnetic properties obtained through the microwave-assisted hydrothermal method. Furthermore, the cytotoxicity of the nanostructures against the HEK 293T cell line was investigated through the XTT assay, which further proved their potential for anticancer treatment applications.
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Affiliation(s)
- Cristina Chircov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | | | - Ionela Andreea Neacșu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Ovidiu-Cristian Oprea
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania
| | - Roxana-Doina Trușcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 54 Spl. Independentei, 050045 Bucharest, Romania
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Hemmati E, Soleimani-Amiri S, Kurdtabar M. A CMC- g-poly(AA- co-AMPS)/Fe 3O 4 hydrogel nanocomposite as a novel biopolymer-based catalyst in the synthesis of 1,4-dihydropyridines. RSC Adv 2023; 13:16567-16583. [PMID: 37274398 PMCID: PMC10234149 DOI: 10.1039/d3ra01389h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/15/2023] [Indexed: 06/06/2023] Open
Abstract
A CMC-g-poly(AA-co-AMPS)/Fe3O4 hydrogel nanocomposite was successfully designed and prepared via graft copolymerization of AA and AMPS on CMC followed by the cross-linking addition of FeCl3/FeCl2. The synthesized hydrogel nanocomposite was characterized by Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, elemental mapping, thermogravimetric analysis/differential thermal analysis (TGA/DTA), and vibrating sample magnetometry (VSM). The CMC-g-poly(AA-co-AMPS)/Fe3O4 hydrogel nanocomposite was employed as a biocompatible catalyst for the green synthesis of 1,4-dihydropyridine (1,4-DHP) derivatives under thermal and ultrasound-assisted reaction conditions. High efficiency, low catalyst loadings, short reaction time, frequent catalyst recovery, environmental compatibility and mild conditions were found in both methods.
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Affiliation(s)
- Elmira Hemmati
- Department of Chemistry, Karaj Branch, Islamic Azad University Karaj Iran
| | | | - Mehran Kurdtabar
- Department of Chemistry, Karaj Branch, Islamic Azad University Karaj Iran
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36
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Sharifi Dehsari H, Hassanpour Amiri M, Asadi K. Solution-Processed Multiferroic Thin-Films with Large Magnetoelectric Coupling at Room-Temperature. ACS NANO 2023; 17:8064-8073. [PMID: 37067828 PMCID: PMC10173693 DOI: 10.1021/acsnano.2c09769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 04/10/2023] [Indexed: 05/10/2023]
Abstract
Experimental realization of thin films with a significant room-temperature magnetoelectric coupling coefficient, αME, in the absence of an external DC magnetic field, has been thus far elusive. Here, a large coupling coefficient of 750 ± 30 mV Oe-1 cm-1 is reported for multiferroic polymer nanocomposites (MPCs) thin-films in the absence of an external DC magnetic field. The MPCs are based on PMMA-grafted cobalt-ferrite nanoparticles uniformly dispersed in the piezoelectric polymer poly(vinylidene fluoride-co-trifluoroethylene, P(VDF-TrFE). It is shown that nanoparticle agglomeration plays a detrimental role and significantly reduces αME. Surface functionalization of the nanoparticles by grafting a layer of poly(methyl methacrylate) (PMMA) via atom transfer radical polymerization (ATRP) renders the nanoparticle miscible with P(VDF-TRFE) matrix, thus enabling their uniform dispersion in the matrix even in submicrometer thin films. Uniform dispersion yields maximized interfacial interactions between the ferromagnetic nanoparticles and the piezoelectric polymer matrix leading to the experimental demonstration of large αME values in solution-processed thin films, which can be exploited in flexible and printable multiferroic electronic devices for sensing and memory applications.
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Affiliation(s)
| | | | - Kamal Asadi
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Centre
for Therapeutic Innovations, University
of Bath, Claverton Down, BA2 7AY Bath, United Kingdom
- Department
of Physics, University of Bath, Claverton Down, BA2 7AY Bath, United Kingdom
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37
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HaiYang S, Zhengkun W, Yong Z, Jie Z. Open nanocavity-assisted Ag@PDMS as a soft SERS substrate with ultra-sensitivity and high uniformity. OPTICS EXPRESS 2023; 31:16484-16494. [PMID: 37157726 DOI: 10.1364/oe.492146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
To achieve high sensitivity and uniformity simultaneously in a surface-enhanced Raman scattering (SERS) substrate, this paper presents the preparation of a flexible and transparent three-dimensional (3D) ordered hemispherical array polydimethylsiloxane (PDMS) film. This is achieved by self-assembling a single-layer polystyrene (PS) microsphere array on a silicon substrate. The liquid-liquid interface method is then used to transfer Ag nanoparticles onto the PDMS film, which includes open nanocavity arrays created by etching the PS microsphere array. An open nanocavity assistant soft SERS sample, "Ag@PDMS," is then prepared. For electromagnetic simulation of our sample, we utilized Comsol software. It has been experimentally confirmed that the Ag@PDMS substrate with silver particles of 50 nm in size is capable of achieving the largest localized electromagnetic hot spots in space. The optimal sample, Ag@PDMS, exhibits ultra-high sensitivity towards Rhodamine 6 G (R6G) probe molecules, with a limit of detection (LOD) of 10-15 mol/L, and an enhancement factor (EF) of ∼1012. Additionally, the substrate exhibits a highly uniform signal intensity for probe molecules, with a relative standard deviation (RSD) of approximately 6.86%. Moreover, it is capable of detecting multiple molecules and can perform real detection on non-flat surfaces.
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38
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Wyss KM, Li JT, Advincula PA, Bets KV, Chen W, Eddy L, Silva KJ, Beckham JL, Chen J, Meng W, Deng B, Nagarajaiah S, Yakobson BI, Tour JM. Upcycling of Waste Plastic into Hybrid Carbon Nanomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209621. [PMID: 36694364 DOI: 10.1002/adma.202209621] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Graphitic 1D and hybrid nanomaterials represent a powerful solution in composite and electronic applications due to exceptional properties, but large-scale synthesis of hybrid materials has yet to be realized. Here, a rapid, scalable method to produce graphitic 1D materials from polymers using flash Joule heating (FJH) is reported. This avoids lengthy chemical vapor deposition and uses no solvent or water. The flash 1D materials (F1DM), synthesized using a variety of earth-abundant catalysts, have controllable diameters and morphologies by parameter tuning. Furthermore, the process can be modified to form hybrid materials, with F1DM bonded to turbostratic graphene. In nanocomposites, F1DM outperform commercially available carbon nanotubes. Compared to current 1D material synthetic strategies using life cycle assessment, FJH synthesis represents an 86-92% decrease in cumulative energy demand and 92-94% decrease in global-warming potential. This work suggests that FJH affords a cost-effective and sustainable route to upcycle waste plastic into valuable 1D and hybrid nanomaterials.
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Affiliation(s)
- Kevin M Wyss
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - John T Li
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Paul A Advincula
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Ksenia V Bets
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Weiyin Chen
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Lucas Eddy
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Applied Physics Graduate Program, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Karla J Silva
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Jacob L Beckham
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Jinhang Chen
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Wei Meng
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Bing Deng
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Satish Nagarajaiah
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Mechanical Engineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Welch Institute for Advanced Materials, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Boris I Yakobson
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Welch Institute for Advanced Materials, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Smalley-Curl Institute, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - James M Tour
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Welch Institute for Advanced Materials, Rice University, 6100 Main Street, Houston, TX, 77005, USA
- Smalley-Curl Institute, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX, 77005, USA
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39
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Fe2O3 nanoparticles' effects on the properties of waste marble powder-mixed cement mortars. APPLIED NANOSCIENCE 2023. [DOI: 10.1007/s13204-023-02811-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2023]
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40
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Kontou E, Christopoulos A, Koralli P, Mouzakis DE. The Effect of Silica Particle Size on the Mechanical Enhancement of Polymer Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1095. [PMID: 36985989 PMCID: PMC10056317 DOI: 10.3390/nano13061095] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/09/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
In the present work, SiO2micro/nanocomposites based on poly-lactic acid (PLA) and an epoxy resin were prepared and experimentally studied. The silica particles were of varying sizes from the nano to micro scale at the same loading. The mechanical and thermomechanical performance, in terms of dynamic mechanical analysis, of the composites prepared was studied in combination with scanning electron microscopy (SEM). Finite element analysis (FEA) has been performed to analyze the Young's modulus of the composites. A comparison with the results of a well-known analytical model, taking into account the filler's size and the presence of interphase, was also performed. The general trend is that the reinforcement is higher for the nanosized particles, but it is important to conduct supplementary studies on the combined effect of the matrix type, the size of the nanoparticles, and the dispersion quality. A significant mechanical enhancement was obtained, particularly in the Resin/based nanocomposites.
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Affiliation(s)
- Evagelia Kontou
- Mechanics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Iroon Polytechniou 9, Zografou, 15780 Athens, Greece
| | - Angelos Christopoulos
- Mechanics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Iroon Polytechniou 9, Zografou, 15780 Athens, Greece
| | - Panagiota Koralli
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Dionysios E. Mouzakis
- Hellenic Army Academy, Leoforos Eyelpidon (Varis-Koropiou) Avenue, Vari P.O., 16673 Attica, Greece
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41
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Turhan EA, Akbaba S, Tezcaner A, Evis Z. Boron nitride nanofiber/Zn-doped hydroxyapatite/polycaprolactone scaffolds for bone tissue engineering applications. BIOMATERIALS ADVANCES 2023; 148:213382. [PMID: 36963343 DOI: 10.1016/j.bioadv.2023.213382] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/21/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023]
Abstract
In this study, Zn doped hydroxyapatite (Zn HA)/boron nitride nanofiber (BNNF)/poly-ε-caprolactone (PCL) composite aligned fibrous scaffolds are produced with rotary jet spinning (RJS) for bone tissue engineering applications. It is hypothesized that addition of Zn HA and BNNF will contribute to cell viability as well as mechanical and osteogenic properties of the PCL scaffolds. Zn HA was synthesized by mixing Ca and P sources followed by sonication and aging whereas BNNF was obtained by the reaction of melamine with boric acid followed by freeze-drying for annealing of fibers. It is found that incorporation of both Zn HA and BNNF in PCL fibers resulted in higher calcium phosphate (CaP) precipitation on the scaffolds. Also, in vitro cell culture studies showed that presence of both Zn HA and BNNF also had synergistic effect for enhanced proliferation and osteogenic activity of Saos-2 cells. Mechanical properties of PCL-Zn HA-BNNF were found similar to that of non-load bearing bones. Furthermore, the presence of Zn HA and BNNF had synergistic effects to cell attachment, proliferation and spreading without causing cytotoxic effect on cells. The highest ALP activity was obtained in the PCL-Zn HA- BNNF group at days 7 and 14 due to release of zinc, calcium, phosphate and boron. Considering its mechanical and bioactivity properties, PCL-Zn HA-BNNF composite scaffolds hold promise as non-load bearing bone substitutes.
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Affiliation(s)
- Emine Ayşe Turhan
- Department of Micro and Nanotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Sema Akbaba
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Boron Research Institute, Turkish Energy Nuclear and Mineral Research Agency, Ankara 06520, Turkey
| | - Ayşen Tezcaner
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Ankara 06800, Turkey; Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Zafer Evis
- Department of Micro and Nanotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Ankara 06800, Turkey.
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Sharifzadeh E, Karami M, Ader F. Formation of nanoparticle aggregates and agglomerates in polymer nanocomposites and their distinct impacts on the mechanical properties. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Esmail Sharifzadeh
- Department of Chemical Engineering, Faculty of Petroleum and Chemical Engineering Razi University Kermanshah Iran
- Polymer Research Division, Advanced Chemical Engineering Research Center Razi University Kermanshah Iran
- Research and Documentation Center, Safiran Poshesh Sirang Yasin Company Farman Industrial State Kermanshah Iran
| | - Mahshad Karami
- Department of Chemical Engineering, Faculty of Petroleum and Chemical Engineering Razi University Kermanshah Iran
- Polymer Research Division, Advanced Chemical Engineering Research Center Razi University Kermanshah Iran
| | - Fiona Ader
- Department of Chemical Engineering, Faculty of Petroleum and Chemical Engineering Razi University Kermanshah Iran
- Polymer Research Division, Advanced Chemical Engineering Research Center Razi University Kermanshah Iran
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Legaspi EDR, Sitchon MSDG, Jacinto SD, Basilia BA, Martinez IS. XRD and cytotoxicity assay of submitted nanomaterial industrial samples in the Philippines. PHYSICAL SCIENCES REVIEWS 2023. [DOI: 10.1515/psr-2022-0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Abstract
Distinct properties that nanomaterials possess compared to their bulk counterparts are attributed to their characteristic high surface area to volume ratios, and the prevalence of structure and shape effects at the nanoscale. However, these interesting properties are also accompanied by health hazards that are not seen in bulk materials. In the context of Philippine research and industry, the issue of nanosafety and the creation of nanotechnology guidelines have long been overlooked. This is of particular importance considering that nanotechnology research in the Philippines leans heavily towards medicinal and agricultural applications. In this study, nanomaterial samples from the industry submitted through the Philippine Industrial Technology Development Institute (ITDI) were analyzed using XRD and MTT cytotoxicity assay. XRD results show significant band broadening in the diffraction patterns of halloysite nanoclay, bentonite nanoparticles, silver nanoparticles, and CaCO3 nanoparticles, indicating that samples were in the nanometer range. The diffraction pattern of TiO2, however, did not exhibit band broadening, which may be due to the tendency of TiO2 nanoparticles to aggregate. Submitted samples were also assessed for their effect on cell viability using MTT cytotoxicity assay. Among these samples, only silver nanoparticles exhibited cytotoxicity to the AA8 cell line.
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Affiliation(s)
- Enrico Daniel R. Legaspi
- Institute of Chemistry, College of Science , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
- Natural Sciences Research Institute , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
| | - Ma. Stefany Daennielle G. Sitchon
- Institute of Chemistry, College of Science , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
- Institute of Biology, College of Science , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
| | - Sonia D. Jacinto
- Institute of Biology, College of Science , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
| | - Blessie A. Basilia
- Department of Science and Technology , Materials Science Division, Industrial Technology Development Institute , Taguig City , Metro Manila 1631 , Philippines
| | - Imee Su Martinez
- Institute of Chemistry, College of Science , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
- Natural Sciences Research Institute , University of the Philippines Diliman , Quezon City , Metro Manila 1101 , Philippines
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Salahshoori I, Asghari M, Namayandeh Jorabchi M, Wohlrab S, Rabiei M, Raji M, Afsari M. Methylene diisocyanate - aided tailoring of nanotitania for dispersion engineering through polyurethane mixed matrix membranes: experimental investigations. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023] Open
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45
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Demir EC, McDermott MT, Kim CL, Ayranci C. Towards better understanding the stiffness of nanocomposites via parametric study of an analytical model modeling parameters and experiments. JOURNAL OF COMPOSITE MATERIALS 2023; 57:1087-1104. [PMID: 36974194 PMCID: PMC10037548 DOI: 10.1177/00219983221149122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The stiffness of polymeric materials can be improved dramatically with the addition of nanoparticles. In theory, as the nanoparticle loading in the polymer increases, the nanocomposite becomes stiffer; however, experiments suggest that little or no stiffness improvement is observed beyond an optimal nanoparticle loading. The mismatch between the theoretical and experimental findings, particularly at high particle loadings, needs to be understood for the effective use of nanoparticles. In this respect, we have recently developed an analytical model to close the gap in the literature and predict elastic modulus of nanocomposites. The model is based on a three-phase Mori-Tanaka model coupled with the Monte-Carlo method, and satisfactorily captures the experimental results, even at high nanoparticle loadings. The developed model can also be used to study the effects of agglomeration in nanocomposites. In this paper, we use this model to study the effects of agglomeration and related model parameters on the stiffness of nanocomposites. In particular, the effects of particle orientation, critical distance, dispersion state and agglomerate property, and particle aspect ratio are investigated to demonstrate capabilities of the model and to observe how optimal particle loading changes with respect these parameters. The study shows that the critical distance defining agglomerates and the properties of agglomerates are the key design parameters at high particle loadings. These two parameters rule the optimal elastic modulus with respect to particle loading. The findings will allow researchers to form design curves and successfully predict the elastic moduli of nanocomposites without the exhaustive experimental undertakings.
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Affiliation(s)
- Eyup Can Demir
- Department of Mechanical
Engineering, University of Alberta, Edmonton,
Alberta, Canada
| | - Mark T McDermott
- Department of Chemistry,
University
of Alberta, Edmonton, Alberta,
Canada
| | - Chun ll Kim
- Department of Mechanical
Engineering, University of Alberta, Edmonton,
Alberta, Canada
| | - Cagri Ayranci
- Department of Mechanical
Engineering, University of Alberta, Edmonton,
Alberta, Canada
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46
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Effect of Hydrothermal Conditions on Kenaf-Based Carbon Quantum Dots Properties and Photocatalytic Degradation. SEPARATIONS 2023. [DOI: 10.3390/separations10020137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
The development of biomass-based CQD is highly attentive to enhancing photocatalytic performance, especially in secondary or ternary heterogeneous photocatalysts by allowing for smooth electron-hole separation and migration. In this study, kenaf-based carbon quantum dots (CQD) were prepared. The main objective of the current work was to investigate temperature, precursor mass and time in hydrothermal synthesis treatment to improve the CQD properties and methylene blue photocatalytic degradation. Optimization of kenaf-based CQD for inclusion in hydrothermal treatment was analyzed. The as-prepared CQDs have been characterized in detail by Fourier transform infrared (FTIR) spectroscopy, high-resolution transmission electron microscope (HRTEM), photoluminescence (PL) and ultraviolet–visible (UV–Vis) spectroscopy. It was found that C200-0.5-24 exhibits a higher photocatalytic activity of the methylene blue dye and optimized hydrothermal conditions of 200 °C, 0.5 g and 24 h. Therefore, novel kenaf-based CQD was synthesized for the first time and was successfully optimized in the as-mentioned conditions. During the hydrothermal treatment, precursor mass controls the size and the distribution of CQD nanoparticles formed. The C200-0.5-24 showed a clearly defined and well-distributed CQD with an optimized nanoparticle size of 8.1 ± 2.2 nm. Indeed, the C200-0.5-24 shows the removal rate of 90% of MB being removed within 120 min.
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Effect of Wet and Dry Finishing and Polishing Technique on Microhardness and Flexural Strength of Nanocomposite Resins. Int J Dent 2023; 2023:2182094. [PMID: 36845627 PMCID: PMC9949949 DOI: 10.1155/2023/2182094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 01/16/2023] [Accepted: 01/28/2023] [Indexed: 02/18/2023] Open
Abstract
Objectives This in vitro study was aimed to assess the effect of wet and dry finishing and polishing techniques on the flexural strength and microhardness of different commercial nanoparticle contained composite resins. Methods and Materials The samples were made of Z250 (microhybrid), Z350 XT (nanofilled), and Z550 (nanohybrid) resin composites. Each group was subdivided into 2 subgroups according to polishing protocols. Subgroup 1 for each composite underwent wet polishing, and subgroup 2 was subject to dry polishing technique. Flexural strength and microhardness of the samples were measured at two different times of polishing (T 0 and T 24). The flexural strength test and microhardness test were measured by a 3-point bending test using a universal testing machine, and a Vickers machine, respectively. Data were analyzed by Kolmogorov-Smirnov, two-way ANOVA, and Tukey HSD tests. Results ANOVA showed that the type of composite has a significant effect on flexural strength. Two-way ANOVA showed that, at T 0, flexural strength of all composites in the dry technique was higher than in the wet technique (p = 0.019). At T 24, Z350 XT had the lowest, and Z250 had the highest flexural strength in both techniques. The time and technique of polishing were also significantly effective on hardness. At T 0, hardness was higher in the wet compared to the dry method (p = 0.008). Tukey test showed that, at T 24, the hardness of Z350 XT was significantly higher than the other materials in both techniques. Conclusion Immediate wet finishing and polishing presented lower flexural strength. Delayed dry/wet finishing and polishing significantly enhanced the hardness of the samples.
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Multifunctional Heterogeneous Ion-Exchange Membranes for Ion and Microbe Removal in Low-Salinity Water. Polymers (Basel) 2023; 15:polym15040843. [PMID: 36850126 PMCID: PMC9962874 DOI: 10.3390/polym15040843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/26/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Here, multifunctional heterogeneous ion-exchange metal nanocomposite membranes were prepared for surface water desalination and bacterial inactivation under low-pressure (0.05 MPa) filtration conditions. Ultrafiltration (UF) heterogeneous ion exchange membranes (IEMs) were modified with different concentrations of AgNO3 and CuSO4 solutions using the intermatrix synthesis (IMS) technique to produce metal nanocomposite membranes. Scanning electron microscopy (SEM) images revealed that the metal nanoparticles (MNPs) (Ag and Cu) were uniformly distributed on the surface and the interior of the nanocomposite membranes. With increasing metal precursor solution concentration (0.01 to 0.05 mol·L-1), the metal content of Ag and Cu nanocomposite membranes increased from 0.020 to 0.084 mg·cm-2 and from 0.031 to 0.218 m·cm-2 respectively. Results showed that the hydrodynamic diameter diameters of Ag and Cu nanoparticles (NPs) increased from 62.42 to 121.10 nm and from 54.2 to 125.7 nm respectively, as the metal precursor concentration loaded increased. The leaching of metals from metal nanocomposite membranes was measured in a dead-end filtration system, and the highest leaching concentration levels were 8.72 ppb and 5.32 ppb for Ag and Cu, respectively. The salt rejection studies indicated that ionic selectivity was improved with increasing metal content. Bacterial filtration showed higher antibacterial activity for metal nanocomposite membranes, reaching 3.6 log bacterial inactivation.
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Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review. Polymers (Basel) 2023; 15:polym15030540. [PMID: 36771842 PMCID: PMC9920371 DOI: 10.3390/polym15030540] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
Nanomaterials have been extensively used in polymer nanocomposite membranes due to the inclusion of unique features that enhance water and wastewater treatment performance. Compared to the pristine membranes, the incorporation of nanomodifiers not only improves membrane performance (water permeability, salt rejection, contaminant removal, selectivity), but also the intrinsic properties (hydrophilicity, porosity, antifouling properties, antimicrobial properties, mechanical, thermal, and chemical stability) of these membranes. This review focuses on applications of different types of nanomaterials: zero-dimensional (metal/metal oxide nanoparticles), one-dimensional (carbon nanotubes), two-dimensional (graphene and associated structures), and three-dimensional (zeolites and associated frameworks) nanomaterials combined with polymers towards novel polymeric nanocomposites for water and wastewater treatment applications. This review will show that combinations of nanomaterials and polymers impart enhanced features into the pristine membrane; however, the underlying issues associated with the modification processes and environmental impact of these membranes are less obvious. This review also highlights the utility of computational methods toward understanding the structural and functional properties of the membranes. Here, we highlight the fabrication methods, advantages, challenges, environmental impact, and future scope of these advanced polymeric nanocomposite membrane based systems for water and wastewater treatment applications.
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50
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Daramola OO, Akinwande AA, Adediran AA, Balogun OA, Olajide JL, Adedoyin KJ, Adewuyi BO, Jen TC. Optimization of the mechanical properties of polyester/coconut shell ash (CSA) composite for light-weight engineering applications. Sci Rep 2023; 13:1066. [PMID: 36658209 PMCID: PMC9852250 DOI: 10.1038/s41598-022-26632-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/16/2022] [Indexed: 01/20/2023] Open
Abstract
The mechanical properties of coconut shell ash (CSA) reinforced polyester composite have been optimized. Various test specimens were developed by dispersing 10, 20, 30 and 40 wt.%, of CSA in unsaturated polyester resin in decreasing particle sizes of 40, 30, and 20 µm in an open mould using hand lay-up technique. Tensile, flexural, and impact strengths, as well as tensile and flexural moduli and Shore D hardness of all test samples were determined. The results showed that 10-20 wt.% CSA increased tensile, flexural, impact strengths and flexural modulus for all particle sizes, but 30-40 wt. % CSA engendered depreciation in corresponding performance. For all particle sizes, 10-40 wt. percent CSA resulted in an increase in tensile strength, whereas 10-40 wt. percent resulted into a linear increase in Shore D hardness. Further observation portrayed that in each case, the finest CSA (20 µm) have the optimum result. Statistical analysis carried out on experimental outcomes confirmed the experimental variables (particle proportion and sizes) to be significant. From the surface plot, the strength responses revealed more dependence on the individual variables than their interactions. Regression models developed for individual responses are termed statistically fit in representing the experimental data.
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Affiliation(s)
- O. O. Daramola
- grid.411257.40000 0000 9518 4324Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, 340001 Nigeria
| | - A. A. Akinwande
- grid.411257.40000 0000 9518 4324Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, 340001 Nigeria
| | - A. A. Adediran
- grid.448923.00000 0004 1767 6410Department of Mechanical Engineering, Landmark University, PMB, Omu-Aran, 1001 Kwara State Nigeria
| | - O. A. Balogun
- grid.411257.40000 0000 9518 4324Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, 340001 Nigeria
| | - J. L. Olajide
- grid.412810.e0000 0001 0109 1328Department of Mechanical and Automation Engineering, Tshwane University of Technology, Pretoria, South Africa
| | - K. J. Adedoyin
- Department of Nuclear Safety, Physical Security and Safeguards, Nigerian Nuclear Regulatory Authority, Abuja, Nigeria
| | - B. O. Adewuyi
- grid.411257.40000 0000 9518 4324Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, 340001 Nigeria
| | - T. C. Jen
- grid.412988.e0000 0001 0109 131XDepartment of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa
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