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Fajdek-Bieda A, Wróblewska A. The Use of Natural Minerals as Reinforcements in Mineral-Reinforced Polymers: A Review of Current Developments and Prospects. Polymers (Basel) 2024; 16:2505. [PMID: 39274137 DOI: 10.3390/polym16172505] [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: 07/03/2024] [Revised: 07/29/2024] [Accepted: 08/10/2024] [Indexed: 09/16/2024] Open
Abstract
Natural minerals play a key role in the burgeoning field of mineral-reinforced polymers, providing an important element in strengthening and toughening the properties of composite materials. This article presents a comprehensive overview of the use of minerals in mineral-reinforced polymers, covering various aspects of their applications and impact on the final properties of these materials. The potential of various types of natural minerals (for example talc, montmorillonite, halloysite, diatomite) as reinforcements in mineral-reinforced polymers is discussed. Techniques for producing mineral-reinforced polymers using minerals, including the mixing method, impregnation, and coating application, are presented in detail. In addition, the effects of process parameters and component ratios on the final properties of mineral-reinforced polymers are discussed. The latest research on the use of minerals in mineral-reinforced polymers is also presented, including their effects on the strength, stiffness, resistance to environmental conditions, and biodegradation of the materials. Finally, the development prospects and potential applications of mineral-reinforced polymers with minerals in various industrial sectors, including packaging, automotive, construction, and medicine, are discussed.
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Affiliation(s)
- Anna Fajdek-Bieda
- Technical Department, Jakub's from Paradyż Academy in Gorzów Wielkopolski, Chopina 52, 66-400 Gorzów Wielkopolski, Poland
| | - Agnieszka Wróblewska
- Department of Catalytic and Sorbent Materials Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
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Hamdy TM. Modification of polymethylmethacrylate bone cement with halloysite clay nanotubes. BMC Oral Health 2024; 24:893. [PMID: 39098928 PMCID: PMC11299279 DOI: 10.1186/s12903-024-04600-3] [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: 04/24/2024] [Accepted: 07/12/2024] [Indexed: 08/06/2024] Open
Abstract
BACKGROUND Polymethylmethacrylate (PMMA) bone cement is used in orthopedics and dentistry to get primary fixation to bone but doesn't provide a mechanically and biologically stable bone interface. Therefore, there was a great demand to improve the properties of the PMMA bone cement to reduce its clinical usage limitations and enhance its success rate. Recent studies demonstrated that the addition of halloysite nanotubes (HNTs) to a polymeric-based material can improve its mechanical and thermal characteristics. OBJECTIVES The purpose of the study is to assess the compressive strength, flexural strength, maximum temperature, and setting time of traditional PMMA bone cements that have been manually blended with 7 wt% HNT fillers. METHODS PMMA powder and monomer liquid were combined to create the control group, the reinforced group was made by mixing the PMMA powder with 7 wt% HNT fillers before liquid mixing. Chemical characterization of the HNT fillers was employed by X-ray fluorescence (XRF). The morphological examination of the cements was done using a scanning electron microscope (SEM). Analytical measurements were made for the compressive strength, flexural strength, maximum temperature, and setting time. Utilizing independent sample t-tests, the data was statistically assessed to compare mean values (p < 0.05). RESULTS The findings demonstrated that the novel reinforced PMMA-based bone cement with 7 wt% HNT fillers showed higher mean compressive strength values (93 MPa) and higher flexural strength (72 MPa). and lower maximum temperature values (34.8 °C) than the conventional PMMA bone cement control group, which was (76 MPa), (51 MPa), and (40 °C), respectively (P < 0.05). While there was no significant difference in the setting time between the control and the modified groups. CONCLUSION The novel PMMA-based bone cement with the addition of 7 wt% HNTs can effectively be used in orthopedic and dental applications, as they have the potential to enhance the compressive and flexural strength and reduce the maximum temperatures.
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Affiliation(s)
- Tamer M Hamdy
- Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza, Dokki, 12622, Egypt.
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Wieczorek M, Tatarchuk T, Skórczewska K, Szulc J, Tomaszewska J. The Effect of Silanized Halloysite Nanotubes on the Structure of Polyethylene-Based Composite. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3260. [PMID: 38998341 PMCID: PMC11242803 DOI: 10.3390/ma17133260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/21/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024]
Abstract
Chemical modification of the surface of halloysite nanotubes (HNT) by alkalization (with sodium hydroxide (NaOH)) and grafting with silanes (bis(trimethylsilyl)amine (HMDS)) was carried out. The efficiency of the alkalization and grafting process was evaluated by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and the nitrogen adsorption method were used. XRD and FTIR analysis confirmed the formation of bonds of trimethylsilyl groups to the HNT surface which changed the nature of the surface from hydrophilic to hydrophobic. In addition, it was noted that grafting with silanes decreases by 7.2% the specific surface area of the halloysite compared to the alkalized material. High-density polyethylene (HDPE) composites with halloysite (HNT), alkalized halloysite (alk-HNT), and HMDS-modified halloysite (m-HNT) were processed in the molten state in a Brabender mixer chamber. On SEM/EDS micrographs of HDPE composites with silanized HNT, a change in surface characteristics from smooth to ductile was observed. Higher melting point values based on differential scanning calorimetry (DSC) analysis of HDPE composites with 5%wt silanized halloysite in comparison with HNT and alk-HNT of, respectively, 2.2% and 1.4% were found, which indicates a slight beneficial influence of the filler on the quality of ordering of the crystalline phase of the matrix.
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Affiliation(s)
- Martina Wieczorek
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85326 Bydgoszcz, Poland; (M.W.); (J.S.)
| | - Tetiana Tatarchuk
- Faculty of Chemistry, Jagiellonian University, 30387 Kraków, Poland;
- Educational and Scientific Center of Materials Science and Nanotechnology, Vasyl Stefanyk Precarpathian National University, 76018 Ivano-Frankivsk, Ukraine
| | - Katarzyna Skórczewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85326 Bydgoszcz, Poland; (M.W.); (J.S.)
| | - Joanna Szulc
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85326 Bydgoszcz, Poland; (M.W.); (J.S.)
| | - Jolanta Tomaszewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85326 Bydgoszcz, Poland; (M.W.); (J.S.)
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Al Ansari N, Abid M. Enhancing Presurgical Infant Orthopedic Appliances: Characterization, Mechanics, and Biofilm Inhibition of a Novel Chlorhexidine-Halloysite Nanotube-Modified PMMA. Int J Biomater 2024; 2024:6281972. [PMID: 38962288 PMCID: PMC11221949 DOI: 10.1155/2024/6281972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 04/05/2024] [Accepted: 04/22/2024] [Indexed: 07/05/2024] Open
Abstract
Objectives This in vitro study aimed to develop a novel nanocomposite acrylic resin with inherent antimicrobial properties. This study evaluated its effectiveness against microbial biofilm formation, while also assessing its physical and mechanical properties. Methods Polymethylmethacrylate (PMMA) was modified with four different concentrations of chlorhexidine halloysite nanotubes (CHX-HNTs): 1%, 1.5%, 3%, and 4.5 wt.% by weight, along with a control group (0 wt.% CHX-HNTs). The biofilm inhibition ability of the modified CHX-HNTs acrylic against Candida albicans, Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus agalactiae was assessed using microtiter biofilm test. In addition, ten samples from each group were then tested for flexural strength, surface roughness, and hardness. Statistical analysis was performed using one-way ANOVA and Tukey's test for comparison (P < 0.05). Results CHX-HNTs effectively reduced the adhesion of Candida albicans and bacteria to the PMMA in a dose-dependent manner. The higher the concentration of CHX-HNTs, the greater the reduction in microbial adhesion, with the highest concentration (4.5 wt.%) showing the most significant effect with inhibition rates ≥98%. The addition of CHX-HNTs at any tested concentration (1%, 1.5%, 3%, and 4.5 wt.%) did not cause any statistically significant difference in the flexural strength, surface roughness, or hardness of the PMMA compared to the control group. Conclusions The novel integration of CHX-HNT fillers shows promising results as an effective biofilm inhibitor on acrylic appliances. This new approach has the potential to successfully control infectious diseases without negatively affecting the mechanical properties of the acrylic resin. Clinical Relevance. The integration of CHX-HNTs into presurgical infant orthopedic appliances should be thoroughly assessed as a promising preventive measure to mitigate microbial infections. This evaluation holds significant potential for controlling infectious diseases among infants with cleft lip and palate, thereby offering a valuable contribution to their overall well-being.
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Affiliation(s)
- Nadia Al Ansari
- Department of Orthodontics, Al Rafidain University College, Baghdad, Iraq
- Department of Orthodontic, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Mushriq Abid
- Department of Orthodontic, College of Dentistry, University of Baghdad, Baghdad, Iraq
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Alansari N, Abid M, Dziedzic A. Enhanced antimicrobial efficacy of chlorhexidine-encapsulated halloysite nanotubes incorporated in presurgical orthopedic appliances: an in vitro, controlled study. Clin Oral Investig 2024; 28:68. [PMID: 38165480 DOI: 10.1007/s00784-023-05464-7] [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: 07/18/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
AIMS AND OBJECTIVE Presurgical infant's orthopedic appliances (PSIOs) play an increasingly crucial role in the interdisciplinary management of neonatal CLP, aiming to improve and maintain adequate nasolabial aesthetics, followed by primary lip/nasal surgery in both unilateral and bilateral CLP cases. The use of PSIOs in cleft lip and palate patients can lead to contamination with oral microflora, acting as a potential reservoir for infectious microorganisms. Acrylic surfaces might provide retention niches for microorganisms to adhere, and inhabit, which is difficult to control in immunocompromised patients, thus predisposing them to increased infection risks. The objective of this multi-assay in vitro study was to investigate the effects of incorporating chlorhexidine-loaded halloysite nanotubes (CHX-HNTs) fillers on the morphological, cytotoxic, release, and antimicrobial characteristics of self-cured acrylic polymethyl methacrylate (PMMA) material used in pre-surgical orthopedic appliances. METHODS Disk-shaped PMMA specimens were prepared with varying proportions of CHX-HNTs. A control group without any addition served as a reference, and four experimental samples contained a range of different concentrations of CHX-HNTs (1.0, 1.5, 3, and 4.5 wt%). The antimicrobial efficacy was assessed using an agar diffusion test against common reference microorganisms: Candida albicans, Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus agalactiae. Cytotoxicity was examined using the L929 cell line (mouse fibroblasts) through a (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide, MTT) cell viability assay. The release kinetics of CHX were monitored using UV-spectral measurements. The statistical analysis used a one-way ANOVA followed by Tukey's post hoc test. RESULTS The integration of CHX-HNTs in PMMA exhibited a substantial dose-dependent antifungal and antibacterial effect against microorganisms at tested mass fractions (1.0 to 4.5 wt%). CHX release was sustained for up to 60 days, supporting prolonged antimicrobial activity. Furthermore, no significant cytotoxicity was determined in the L929 fibroblast cell line (control), indicating the biocompatibility of the CHX-HNTs-enhanced PMMA. CONCLUSION Incorporating CHX-HNTs in PMMA successfully enhanced its antimicrobial properties, providing sustained CHX release and superior antimicrobial efficacy. These findings demonstrate the potential of antimicrobial nanoparticles in dental therapies to improve therapeutic outcomes. However, rigorous further clinical trials and observational studies are warranted to validate the practical application, safety, and efficacy. CLINICAL RELEVANCE This study has the potential to make a major impact on the health of infants born with cleft lip and palate by helping to reduce the prevalence of infectious illnesses. The incorporation of CHX-HNTs into PMMA-based appliances is a novel promising preventive approach to reduce microbial infections.
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Affiliation(s)
- Nadia Alansari
- Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, 01110, Iraq
- Department of Orthodontics, Al Rafidain University College, Baghdad, Iraq
| | - Mushriq Abid
- Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, 01110, Iraq.
| | - Arkadiusz Dziedzic
- Department of Conservative Dentistry with Endodontics, Medical University of Sile, 40-055, Katowice, Poland
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Swain R, Nandi S, Mohapatra S, Mallick S. Engineered Clay-Polymer Composite for Biomedical Drug Delivery and Future Challenges: A Survey. Curr Drug Deliv 2024; 21:645-661. [PMID: 37038294 DOI: 10.2174/1567201820666230410110206] [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: 08/30/2022] [Revised: 01/19/2023] [Accepted: 01/30/2023] [Indexed: 04/12/2023]
Abstract
Clay materials are widely used in drug delivery systems due to their unique characteristics. Montmorillonite is a major component of bentonite and it has a large surface area, better swelling capacity, and high adsorption capacity. The modification of natural bentonite could improve its sorption ability for new emerging applications. Recent advancements in the polymer-silicate composite have novel biomedical applications in drug delivery, tissue regeneration, wound healing, cancer therapy, enzyme immobilization, diagnostic and therapeutic devices, etc. Perspective view of the montmorillonite- polymer composite as a pharmaceutical carrier in drug delivery systems has been discussed in this review. Different types of modification of montmorillonite for the development of pharmaceutical formulations have also been documented. Many challenges in clay nanocomposite systems of polymer of natural/synthetic origin are yet to be explored in improving antimicrobial properties, mechanical strength, stimuli responsiveness, resistance to hydrolysis, etc. Drug interaction and binding capability, swelling of clay may be carried out for finding possible applications in monitoring delivery systems. Pharmaceutical properties of active drugs in the formulation could also be improved along with dissolution rate, solubility, and adsorption. The clay-incorporated polymeric drug delivery systems may be examined for a possible increase in swelling capacity and residence time after mucosal administration.
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Affiliation(s)
- Rakesh Swain
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
| | - Souvik Nandi
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
| | - Sujata Mohapatra
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
| | - Subrata Mallick
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
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Pellerito C, Presentato A, Lazzara G, Cavallaro G, Alduina R, Fiore T. New Biocide Based on Tributyltin(IV) Ferulate-Loaded Halloysite Nanotubes for Preserving Historical Paper Artworks. Molecules 2023; 28:7953. [PMID: 38138442 PMCID: PMC10745945 DOI: 10.3390/molecules28247953] [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: 10/17/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Combining biologically active compounds with nanocarriers is an emerging and promising strategy for enhancing the activities of molecules while reducing their levels of toxicity. Green nanomaterials have recently gained momentum in developing protocols for treating and preserving artifacts. In this study, we designed a functional biohybrid material by incorporating tributyltin(IV) ferulate (TBT-F) into halloysite nanotubes (HNTs), generating a new formulation called HNT/TBT-F. The primary objective was to develop a formulation with robust antimicrobial properties and reinforcing features for treating paper with artistic and historical value. To characterize HNT/TBT-F, assess the HNT's loading capacity, and investigate the TBT-F release kinetics from the nanotubes, various analytical techniques, including UV-Vis and infrared spectroscopies, thermogravimetry, and microscopy analysis, were employed. Furthermore, we evaluated the antimicrobial potential of TBT-F and HNT/TBT-F against Kocuria rhizophila, a bacterial strain known for its opportunistic behavior and a cause of artifact biodeterioration. HNT/TBT-F exhibited a significantly stronger bactericidal effect than TBT-F alone against K. rhizophila cells growing planktonically or those forming a biofilm. This enhanced performance could relate to the confinement of TBT-F within the nanotubes, which likely improved its physical-chemical stability and increased the local concentration of TBT-F upon contact with the bacterial cells. Additionally, we evaluated the mechanical properties of a paper treated with HNT/TBT-F, assessing any potential alterations in its color. The findings of this study highlight the favorable attributes of the HNT/TBT-F formulation and its potential for developing protocols aimed at consolidating and preserving culturally significant paper objects.
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Affiliation(s)
- Claudia Pellerito
- Dipartimento di Fisica Chimica-Emilio Segrè (DiFC), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (G.L.); (G.C.)
| | - Alessandro Presentato
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 16, 90128 Palermo, Italy; (A.P.); (R.A.)
| | - Giuseppe Lazzara
- Dipartimento di Fisica Chimica-Emilio Segrè (DiFC), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (G.L.); (G.C.)
| | - Giuseppe Cavallaro
- Dipartimento di Fisica Chimica-Emilio Segrè (DiFC), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (G.L.); (G.C.)
| | - Rosa Alduina
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 16, 90128 Palermo, Italy; (A.P.); (R.A.)
| | - Tiziana Fiore
- Dipartimento di Fisica Chimica-Emilio Segrè (DiFC), Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (G.L.); (G.C.)
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Gan C, Hu H, Meng Z, Zhu X, Gu R, Wu Z, Sun W, Han P, Wang H, Dou G, Gan H. Local Clays from China as Alternative Hemostatic Agents. Molecules 2023; 28:7756. [PMID: 38067486 PMCID: PMC10708434 DOI: 10.3390/molecules28237756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/18/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
In recent years, the coagulation properties of inorganic minerals such as kaolin and zeolite have been demonstrated. This study aimed to assess the hemostatic properties of three local clays from China: natural kaolin from Hainan, natural halloysite from Yunnan, and zeolite synthesized by our group. The physical and chemical properties, blood coagulation performance, and cell biocompatibility of the three materials were tested. The studied materials were characterized by using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). All three clays showed different morphologies and particle size, and exhibited negative potentials between pH 6 and 8. The TGA and DSC curves for kaolin and halloysite were highly similar. Kaolin showed the highest water absorption capacity (approximately 93.8% ± 0.8%). All three clays were noncytotoxic toward L929 mouse fibroblasts. Kaolin and halloysite showed blood coagulation effects similar to that exhibited by zeolite, indicating that kaolin and halloysite are promising alternative hemostatic materials.
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Affiliation(s)
- Changjiao Gan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
- National Medical Products Administration Institute of Executive Development, 16 Xi Zhan Nan Road, Beijing 100073, China
| | - Hongjie Hu
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Zhengzhou 450006, China
| | - Zhiyun Meng
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Xiaoxia Zhu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Ruolan Gu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Zhuona Wu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Wenzhong Sun
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Peng Han
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Hongliang Wang
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Zhengzhou 450006, China
| | - Guifang Dou
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
| | - Hui Gan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (C.G.)
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Vasco G, Arima V, Boudjelida S, Carraro M, Bianco M, Zizzari A, Perrone E, Galiano F, Figoli A, Cesaria M. Polymeric Membranes Doped with Halloysite Nanotubes Imaged using Proton Microbeam Microscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2970. [PMID: 37999324 PMCID: PMC10674683 DOI: 10.3390/nano13222970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
Polymeric membranes are useful tools for water filtration processes, with their performance strongly dependent on the presence of hydrophilic dopants. In this study, polyaniline (PANI)-capped aluminosilicate (halloysite) nanotubes (HNTs) are dispersed into polyether sulfone (PES), with concentrations ranging from 0.5 to 1.5 wt%, to modify the properties of the PES membrane. Both undoped and HNT-doped PES membranes are investigated in terms of wettability (static and time-dependent contact angle), permeance, mechanical resistance, and morphology (using scanning electron microscopy (SEM)). The higher water permeance observed for the PES membranes incorporating PANI-capped HNTs is, finally, assessed and discussed vis-à-vis the real distribution of HNTs. Indeed, the imaging and characterization in terms of composition, spatial arrangement, and counting of HNTs embedded within the polymeric matrix are demonstrated using non-destructive Micro Particle Induced X-ray Emission (µ-PIXE) and Scanning Transmission Ion Microscopy (STIM) techniques. This approach not only exhibits the unique ability to detect/highlight the distribution of HNTs incorporated throughout the whole thickness of polymer membranes and provide volumetric morphological information consistent with SEM imaging, but also overcomes the limits of the most common analytical techniques exploiting electron probes. These aspects are comprehensively discussed in terms of practical analysis advantages.
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Affiliation(s)
- Giovanna Vasco
- CEDAD—Center of Applied Physics, Dating and Diagnostics, Cittadella della Ricerca, University of Salento, SS. 7, Km. 7300, 72100 Brindisi, Italy;
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Campus Ecotekne, 73100 Lecce, Italy
| | - Valentina Arima
- CNR NANOTEC—Institute of Nanotechnology, c/o Campus Ecotekne, 73100 Lecce, Italy; (M.B.); (A.Z.); (E.P.)
| | - Soufiane Boudjelida
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy;
- Department of Material Sciences, University Mohamed El Bachir El Ibrahimi, Bordj Bou Arreridj 34030, Algeria
| | - Mauro Carraro
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy;
- Institute on Membrane Technology (CNR-ITM), University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Monica Bianco
- CNR NANOTEC—Institute of Nanotechnology, c/o Campus Ecotekne, 73100 Lecce, Italy; (M.B.); (A.Z.); (E.P.)
| | - Alessandra Zizzari
- CNR NANOTEC—Institute of Nanotechnology, c/o Campus Ecotekne, 73100 Lecce, Italy; (M.B.); (A.Z.); (E.P.)
| | - Elisabetta Perrone
- CNR NANOTEC—Institute of Nanotechnology, c/o Campus Ecotekne, 73100 Lecce, Italy; (M.B.); (A.Z.); (E.P.)
| | - Francesco Galiano
- Institute on Membrane Technology (CNR-ITM), Via P. Bucci 17/c, 87036 Rende, CS, Italy; (F.G.); (A.F.)
| | - Alberto Figoli
- Institute on Membrane Technology (CNR-ITM), Via P. Bucci 17/c, 87036 Rende, CS, Italy; (F.G.); (A.F.)
| | - Maura Cesaria
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Campus Ecotekne, 73100 Lecce, Italy
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Mrówka M, Lenża-Czempik J, Dawicka A, Skonieczna M. Polyurethane-Based Nanocomposites for Regenerative Therapies of Cancer Skin Surgery with Low Inflammatory Potential to Healthy Fibroblasts and Keratinocytes In Vitro. ACS OMEGA 2023; 8:37769-37780. [PMID: 37867722 PMCID: PMC10586018 DOI: 10.1021/acsomega.3c01663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 09/05/2023] [Indexed: 10/24/2023]
Abstract
Nanocomposites based on thermoplastic polyurethanes (TPUs) filled with halloysite nanotubes (HNTs) were studied for their physicochemical and biological properties. Nanocomposites containing halloysite nanotube filler contents of 1 and 2% (E+1 and E+2), respectively, were obtained by extrusion. The newly formed E+1 and E+2 nanomaterials exhibited better flexibility and similar thermal properties compared to neat polyurethane. The use of atomic force microscopy (AFM) and differential scanning calorimetry (DSC) thermogram analysis showed that the distribution of halloysite nanotubes in the polymer matrix is more evenly dispersed in the E+1 nanomaterial, where the grains in the E+2 nanomaterial have a greater tendency to form agglomerates. Mechanical tests have shown that nanocomposites with the addition of HNT are characterized by a higher stress at break and elongation at break compared to neat TPU. The results of cytotoxicity tests suggest that the nanocomposite materials express lower toxicity to normal HaCaT and NHDF than to cancer Me45 cells. Further studies showed that the tested materials induced the expression of proinflammatory interleukins IL6 and IL8 in normal cells, but their overexpression in the cancer cell line resulted in cytostatic effects and proliferation reduction. Such a conclusion suggests the possible application of tested materials for regenerative therapies in cancer surgeries.
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Affiliation(s)
- Maciej Mrówka
- Department
of Material Technologies, Faculty of Material Engineering, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland
- Material
Innovations Laboratory, Silesian University
of Technology, Krasińskiego
8, 40-019 Katowice, Poland
| | | | - Anahit Dawicka
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
- Department
of Systems Biology and Engineering, Silesian
University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Magdalena Skonieczna
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
- Department
of Systems Biology and Engineering, Silesian
University of Technology, Akademicka 16, 44-100 Gliwice, Poland
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11
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Aloui H, Khwaldia K. Development and characterization of novel emulsified nanocomposite coatings incorporating different loadings of nanoclay and beeswax for paper packaging. RSC Adv 2023; 13:30358-30368. [PMID: 37849698 PMCID: PMC10578248 DOI: 10.1039/d3ra05211g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/05/2023] [Indexed: 10/19/2023] Open
Abstract
Paper coated with poly (vinyl alcohol) (PVA)-based films incorporating varying amounts of halloysite nanotubes (HNTs) and/or beeswax (BW) were developed. The applied PVA/HNTs nanocomposite films, PVA/BW emulsified films, and PVA/HNTs/BW emulsified nanocomposite films were characterized in terms of FTIR, TGA, DSC, and XRD analyses. The effects of HNTs and/or BW at different loadings on the functional properties of coated paper were investigated. HNTs and BW co-incorporation significantly improved the water vapor permeability of the resulting PVA/HNTs/BW coated paper samples, and reduced their Cobb60 values, respectively, by more than 50, 24, and 18% as compared to the uncoated paper, paper coated with pristine PVA and paper coated with PVA/HNTs nanocomposite-based coatings. While increasing their contact angle values in the range of 10-20%. Likewise, HNTs and BW co-incorporation increased the mechanical strength of PVA/HNTs/BW coated paper in the range of 20.54-29.80% as compared to the uncoated paper, while increasing their flexibility up to 32.50%. Such enhancement in the functional properties of PVA/HNTs/BW coated paper is most likely due to the establishment of interactions between PVA, BW, and HNTs. Our results demonstrate the ability of PVA/HNTs/BW emulsified nanocomposite coatings to improve paper barrier and mechanical properties owing to the prominent reinforcement effects of HNTs and the good moisture-barrier properties of BW.
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Affiliation(s)
- Hajer Aloui
- Laboratoire des Substances Naturelles, Institut National de Recherche et d'Analyse Physico-chimique Biotechpole Sidi Thabet 2020 Tunisia
- Higher Institute of Biotechnology, Monastir (ISBM) Monastir Tunisia
| | - Khaoula Khwaldia
- Laboratoire des Substances Naturelles, Institut National de Recherche et d'Analyse Physico-chimique Biotechpole Sidi Thabet 2020 Tunisia
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Elibol MK, Jiang L, Xie D, Cao S, Pan X, Härk E, Lu Y. Nickel Oxide Decorated Halloysite Nanotubes as Sulfur Host Materials for Lithium-Sulfur Batteries. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2300005. [PMID: 37483418 PMCID: PMC10362100 DOI: 10.1002/gch2.202300005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/09/2023] [Indexed: 07/25/2023]
Abstract
Lithium-sulfur batteries with high energy density still confront many challenges, such as polysulfide dissolution, the large volume change of sulfur, and fast capacity fading in long-term cycling. Herein, a naturally abundant clay material, halloysite, is introduced as a sulfur host material in the cathode of Li-S batteries. Nickel oxide nanoparticles are embedded into the halloysite nanotubes (NiO@Halloysite) by hydrothermal and calcination treatment to improve the affinity of halloysite nanotubes to polysulfides. The NiO@Halloysite composite loaded with sulfur (S/NiO@Halloysite) is employed as the cathode of Li-S batteries, which combines the physical confinements of tubular halloysite particles and good chemical adsorption ability of NiO. The S/NiO@Halloysite electrode exhibits a high discharge capacity of 1205.47 mAh g-1 at 0.1 C. In addition, it demonstrates enhanced cycling stability, retaining ≈60% of initial capacity after 450 cycles at 0.5 C. The synthesized NiO@Halloysite can provide a promising prospect and valuable insight into applying natural clay materials in Li-S batteries.
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Affiliation(s)
- Meltem Karaismailoglu Elibol
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Department for Energy Science and TechnologyTurkish‐German UniversityŞahinkaya Cad. 106İstanbul34820Turkey
| | - Lihong Jiang
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Key Laboratory of Textile Science & TechnologyCollege of TextilesDonghua UniversityNorth Renmin Road 2999Shanghai201620P. R. China
| | - Dongjiu Xie
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Institute of ChemistryUniversity of PotsdamKarl‐Liebknecht‐Straße 24‐2514476PotsdamGermany
| | - Sijia Cao
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Institute of ChemistryUniversity of PotsdamKarl‐Liebknecht‐Straße 24‐2514476PotsdamGermany
| | - Xuefeng Pan
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Institute of ChemistryUniversity of PotsdamKarl‐Liebknecht‐Straße 24‐2514476PotsdamGermany
| | - Eneli Härk
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
| | - Yan Lu
- Department for Electrochemical Energy StorageHelmholtz‐Zentrum Berlin für Materialien und EnergieHahn‐Meitner Platz 114109BerlinGermany
- Institute of ChemistryUniversity of PotsdamKarl‐Liebknecht‐Straße 24‐2514476PotsdamGermany
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13
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Kumar L, Deshmukh RK, Hakim L, Gaikwad KK. Halloysite Nanotube as a Functional Material for Active Food Packaging Application: A Review. FOOD BIOPROCESS TECH 2023:1-14. [PMID: 37363381 PMCID: PMC10151217 DOI: 10.1007/s11947-023-03092-3] [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: 08/23/2022] [Accepted: 04/07/2023] [Indexed: 06/28/2023]
Abstract
Halloysite nanotubes (HNTs) are naturally occurring nanomaterials with a tubular shape and high aspect ratio, a promising functional additive for active food packaging applications. HNTs have been shown to possess unique properties such as high surface area, thermal stability, and biocompatibility, making them attractive for active food packaging materials. This review summarizes recent research on the use of HNTs as functional additives in active food packaging applications, including antimicrobial packaging, ethylene scavenging packaging, moisture, and gas barrier packaging. The potential benefits and challenges associated with the incorporation of HNTs into food packaging materials are discussed. The various modification methods, such as the physical, chemical, biological, and electrostatic methods, along with their impact on the properties of HNTs, are discussed. The advantages and challenges associated with each modification approach are also evaluated. Overall, the modification of HNTs has opened new possibilities for the development of advanced packaging materials with improved performance for various functional food packaging materials with enhanced properties and extended shelf life.
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Affiliation(s)
- Lokesh Kumar
- Department of Paper Technology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand India
| | - Ram Kumar Deshmukh
- Department of Paper Technology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand India
| | - Lokman Hakim
- Department of Paper Technology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand India
| | - Kirtiraj K. Gaikwad
- Department of Paper Technology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand India
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Silva PAP, Oréfice RL. Bio-sorbent from castor oil polyurethane foam containing cellulose-halloysite nanocomposite for removal of manganese, nickel and cobalt ions from water. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131433. [PMID: 37146336 DOI: 10.1016/j.jhazmat.2023.131433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/31/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023]
Abstract
In order to mitigate the contamination of water with heavy metals, caused by mining dam failures in Brumadinho and Mariana in Brazil, eco-friendly bio-based castor oil polyurethane foams, containing a cellulose-halloysite green nanocomposite were prepared. Polyurethane foams containing none (PUF-0), 5%wt (PUF-5), and 10%wt (PUF-10) of the nanocomposite were obtained. The application of the material in aqueous media was verified through an investigation of the efficiency of adsorption, the adsorption capacity, and the adsorption kinetics in pH= 2 and pH= 6.5 for manganese, nickel, and cobalt ions. An increase of 5.47 times in manganese adsorption capacity was found after only 30 min in contact with a solution having this ion at pH= 6.5 for PUF-5 and 11.38 times for PUF-10 when both were compared with PUF-0. Adsorption efficiency was respectively 68.17% at pH= 2 for PUF-5% and 100% for PUF-10 after 120 h, while for the control foam, PUF-0, the adsorption efficiency was only 6.90%.
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Affiliation(s)
- Philipe Augusto Pocidonio Silva
- Department of Metallurgical, Materials Engineering, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Campus da UFMG, Pampulha, Belo Horizonte, MG, Brazil
| | - Rodrigo Lambert Oréfice
- Department of Metallurgical, Materials Engineering, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Campus da UFMG, Pampulha, Belo Horizonte, MG, Brazil.
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15
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Pouthika K, Madhumitha G. Synergistic synthesis of Carrisa edulis fruit extract capped heterogeneous CuO-ZnO-HNT composite for photocatalytic removal of organic pollutants. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121457] [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]
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16
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Tomaszewska J, Wieczorek M, Skórczewska K, Klapiszewska I, Lewandowski K, Klapiszewski Ł. Preparation, Characterization and Tailoring Properties of Poly(Vinyl Chloride) Composites with the Addition of Functional Halloysite-Lignin Hybrid Materials. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8102. [PMID: 36431589 PMCID: PMC9693884 DOI: 10.3390/ma15228102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/07/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
In this article, halloysite-lignin hybrid materials (HL) were designed and obtained. The weak hydrogen bonds found between the components were determined based on Fourier transform infrared spectroscopy (FTIR), proving the achievement of class I hybrid systems. The HL systems were characterized by very good thermal stability and relatively good homogeneity, which increased as the proportion of the inorganic part increased. This was confirmed by analyzing scanning electron microscope (SEM) images and assessing particle size distributions and polydispersity indexes. Processing rigid poly(vinyl chloride) (PVC) with HL systems with a content of up to 10 wt% in a Brabender torque rheometer allowed us to obtain composites with a relatively homogeneous structure confirmed by SEM observations; simultaneously, a reduction in the fusion time was noted. An improvement in PVC thermal stability of approximately 40 °C for composites with HL with a ratio of 1:5 wt/wt was noted. Regardless of the concentration of the HL system, PVC composites exhibited inconsiderably higher Young's modulus, but the incorporation of 2.5 wt% of fillers increased Charpy impact strength by 5-8 kJ/m2 and doubled elongation at break. This study demonstrated that favorable mechanical properties of PVC composites can be achieved, especially with an HL system with a ratio of 5:1 wt/wt.
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Affiliation(s)
- Jolanta Tomaszewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, PL-85326 Bydgoszcz, Poland
| | - Martina Wieczorek
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, PL-85326 Bydgoszcz, Poland
| | - Katarzyna Skórczewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, PL-85326 Bydgoszcz, Poland
| | - Izabela Klapiszewska
- Faculty of Civil and Transport Engineering, Poznan University of Technology, PL-60965 Poznan, Poland
| | - Krzysztof Lewandowski
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, PL-85326 Bydgoszcz, Poland
| | - Łukasz Klapiszewski
- Faculty of Chemical Technology, Poznan University of Technology, PL-60965 Poznan, Poland
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Sikandar M, Shoaib MH, Yousuf RI, Ahmed FR, Ali FR, Saleem MT, Ahmed K, Sarfaraz S, Jabeen S, Siddiqui F, Husain T, Qazi F, Imtiaz MS. Nanoclay-Based Composite Films for Transdermal Drug Delivery: Development, Characterization, and in silico Modeling and Simulation. Int J Nanomedicine 2022; 17:3463-3481. [PMID: 35959283 PMCID: PMC9359522 DOI: 10.2147/ijn.s367540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/24/2022] [Indexed: 11/26/2022] Open
Abstract
Purpose Halloysite nanotubes (HNTs) are a versatile and highly investigated clay mineral due to their natural availability, low cost, strong mechanical strength, biocompatibility, and binding properties. The present work explores its role for retarding and controlling the drug release from the composite polymer matrix material. Methods For this purpose, nanocomposite films comprising propranolol HCl and different concentrations of HNTs were formulated using the “solution casting method”. The menthol in a concentration of 1% w/v was used as a permeation enhancer, and its effect on release and permeation was also determined. Quality characteristics of the nanocomposite were determined, and in vitro release and permeation studies were performed using the Franz diffusion system. The data was analyzed using various mathematical models and permeation parameters. Optimized formulation was also subjected to skin irritation test, FTIR, DSC, and SEM study. Systemic absorption and disposition of propranolol HCl from the nanocomposites were predicted using the GastroPlus TCAT® model. Results The control in drug release rate was associated with the higher concentration of HNTs. F8 released 50% of propranolol within 8 hours (drug, HNTs ratio, 1:2). The optimized formulation (F6) with drug: HNTs (2:1), exhibited drug release 80% in 4 hours, with maximum flux of 145.812 µg/cm2hr. The optimized formulation was found to be a non-irritant for skin with a shelf life of 35.46 months (28–30 ℃). The in silico model predicted Cmax, Tmax, AUCt, and AUCinf as 32.113 ng/mL, 16.58 h, 942.34 ng/mL×h, and 1102.9 ng/mL×h, respectively. Conclusion The study demonstrated that HNTs could be effectively used as rate controlling agent in matrix type transdermal formulations.
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Affiliation(s)
- Muhammad Sikandar
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Muhammad Harris Shoaib
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
- Correspondence: Muhammad Harris Shoaib, Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan, Email ;
| | - Rabia Ismail Yousuf
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Farrukh Rafiq Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Fatima Ramzan Ali
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
- Jinnah College of Pharmacy, Sohail University, Karachi, 74000, Pakistan
| | - Muhammad Talha Saleem
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Kamran Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Sana Sarfaraz
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Sabahat Jabeen
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Fahad Siddiqui
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Tazeen Husain
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Faaiza Qazi
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Muhammad Suleman Imtiaz
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
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Giannakas AE, Salmas CE, Moschovas D, Baikousi M, Kollia E, Tsigkou V, Karakassides A, Leontiou A, Kehayias G, Avgeropoulos A, Proestos C. Nanocomposite Film Development Based on Chitosan/Polyvinyl Alcohol Using ZnO@montmorillonite and ZnO@Halloysite Hybrid Nanostructures for Active Food Packaging Applications. NANOMATERIALS 2022; 12:nano12111843. [PMID: 35683702 PMCID: PMC9182113 DOI: 10.3390/nano12111843] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 11/16/2022]
Abstract
The global turn from the linear to the circular economy imposes changes in common activities such as food packaging. The use of biodegradable materials such as polyvinyl alcohol, natural raw materials such as clays, and food byproducts such as chitosan to develop novel food packaging films attracts the interest of industrial and institutional research centers. In this study, novel hybrid nanostructures were synthesized via the growth of zinc oxide nanorods on the surface of two nanoclays. The obtained nanostructures were incorporated with chitosan/polyvinyl alcohol composite either as nanoreinforcement or as an active agent to develop packaging films. The developed films were characterized via XRD, FTIR, mechanical, water-vapor diffusion, water sorption, and oxygen permeability measurements. Antimicrobial activity measurements were carried out against four different pathogen microorganisms. XRD indicated the formation of an intercalated nanocomposite structure for both types of nanoclays. Furthermore, improved tensile, water/oxygen barrier, and antimicrobial properties were recorded for all films compared to the pure chitosan/polyvinyl alcohol film. Overall, the results indicated that the use of the bio-based developed films led to an extension of food shelf life and could be used as novel active food packaging materials. Among them, the most promising film was the 6% wt. ZnO@halloysite.
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Affiliation(s)
- Aris E. Giannakas
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece;
- Correspondence: (A.E.G.); (C.E.S.); (C.P.)
| | - Constantinos E. Salmas
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (M.B.); (A.K.); (A.A.)
- Correspondence: (A.E.G.); (C.E.S.); (C.P.)
| | - Dimitrios Moschovas
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (M.B.); (A.K.); (A.A.)
| | - Maria Baikousi
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (M.B.); (A.K.); (A.A.)
| | - Eleni Kollia
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (V.T.)
| | - Vasiliki Tsigkou
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (V.T.)
| | - Anastasios Karakassides
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (M.B.); (A.K.); (A.A.)
| | - Areti Leontiou
- Laboratory of Food Technology, Department of Business Administration of Agricultural and Food Enterprises, University of Patras, 30100 Agrinio, Greece;
| | - George Kehayias
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece;
| | - Apostolos Avgeropoulos
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (M.B.); (A.K.); (A.A.)
| | - Charalampos Proestos
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (V.T.)
- Correspondence: (A.E.G.); (C.E.S.); (C.P.)
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Merzah ZF, Fakhry S, Allami TG, Yuhana NY, Alamiery A. Enhancement of the Properties of Hybridizing Epoxy and Nanoclay for Mechanical, Industrial, and Biomedical Applications. Polymers (Basel) 2022; 14:polym14030526. [PMID: 35160515 PMCID: PMC8838146 DOI: 10.3390/polym14030526] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 01/27/2023] Open
Abstract
The strong demand for plastic and polymeric materials continues to grow year after year, making these industries critical to address sustainability. By functioning as a filler in either a synthetic or natural starch matrix, nanoclay enables significant reductions in the impact of nonbiodegradable materials. The effect of treated nanoclay (NC) loading on the mechanical and morphological properties (EP) of epoxy is investigated in this research. The NC-EP nanocomposites were prepared via casting. The investigation begins with adding NC at concentrations of 1, 2, and 3 weight percent, followed by the effect of acid treatment on the same nanocomposites. The evaluation is focused on four mechanical tensile strength parameters: Young’s modulus, maximum load, and % elongation. The addition of NC improved the mechanical properties of the four components by 27.2%, 33.38%, 46.98%, and 43.58%, respectively. The acid treatment improved 35.9%, 42.8%, 51.1%, and 83.5%, respectively. These improvements were attributed to NC’s ability to alter the structural morphology as assessed by field emission scanning electron microscopy (FESEM), a tool for analysing the microstructure. FESEM images were used to visualise the interaction between the NC and EP nanocomposites. The dynamic mechanical properties of the hybrid nanocomposites were investigated using storage modulus, loss modulus, and tan(delta). The results have shown that the viscoelastic properties improved as the fraction of NC increased. The overall findings suggest that these nanocomposites could be used in various industrial and biomedical applications.
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Affiliation(s)
- Zainab Fakhri Merzah
- Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad 10071, Iraq;
| | - Sokina Fakhry
- Al Furat Intermediate School for Girls, Ministry of Education, Babylon 11524, Iraq;
| | - Tyser Gaaz Allami
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor Darul Ehsan, Malaysia; (N.Y.Y.); (A.A.)
- Correspondence: ; Tel.: +60-1157-733-927
| | - Nor Yuliana Yuhana
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor Darul Ehsan, Malaysia; (N.Y.Y.); (A.A.)
| | - Ahmed Alamiery
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor Darul Ehsan, Malaysia; (N.Y.Y.); (A.A.)
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Agafonov AV, Ramenskaya LM, Grishina EP, Kudryakova NO. Cation effects on the properties of halloysite-confined bis(trifluoromethylsulfonyl)imide based ionic liquids. RSC Adv 2021; 11:38605-38615. [PMID: 35493252 PMCID: PMC9044193 DOI: 10.1039/d1ra05466j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/22/2021] [Indexed: 11/21/2022] Open
Abstract
Four types of ionic liquids (ILs) of [X]TFSI ([X]+ is a cation such as 1-butyl-3-methylimidazolium BMIm+, 1-butyl-1-methylpyrrolidinium BMPyrr+, 1-butyl-1-methylpiperidinium BMPip+ and methyltrioctylammonium MOc3Am+ and TFSI- is the bis(trifluoromethylsulfonyl)imide anion) were confined in halloysite nanoclay (Hal) at an excess ionic liquid concentration (IL : Hal ∼55 : 45 wt%) and studied by X-ray diffraction, TG, DSC analysis and FTIR spectroscopy. It was found that the physicochemical properties of ILs trapped by halloysite at maximum loading are similar to those of bulk ILs and change depending on the cation type and size. The cold crystallization temperature (T cc) and melting point (T m) of the crystalline mesophase in confined BMIm+ and BMPyrr+ ionic liquids are higher than in the bulk ones, while in the amorphous BMPyrr+ mesophase, the T cc and T m values decrease by 9.7 and 14.2 °C, respectively. Confined BMPip+ and MOc3Am+ only have the glass transition temperature (T g), which increases by 1.5 and 8.0 °C, respectively, compared to bulk ILs. The onset decomposition temperature (T d) decreases by 106.5, 40.7, 19.0 and 7.7 °C in BMIm+, BMPip+, BMPyrr+ and MOc3Am+, respectively. The changes in the properties are explained by the cation and anion interaction with halloysite, as well as by the transformation of the ionic liquid structure. It is found that in this case the amount of the TFSI- anion trans-conformer increases in the following order: BMIm+ > BMPyrr+ ∼ BMPip+ >> MOc3Am+.
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Affiliation(s)
- A V Agafonov
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences Ivanovo Russia +7-4932-336237 +7-4932-336259
| | - L M Ramenskaya
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences Ivanovo Russia +7-4932-336237 +7-4932-336259
| | - E P Grishina
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences Ivanovo Russia +7-4932-336237 +7-4932-336259
| | - N O Kudryakova
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences Ivanovo Russia +7-4932-336237 +7-4932-336259
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Allami T, Alamiery A, Nassir MH, Kadhum AH. Investigating Physio-Thermo-Mechanical Properties of Polyurethane and Thermoplastics Nanocomposite in Various Applications. Polymers (Basel) 2021; 13:2467. [PMID: 34372071 PMCID: PMC8347130 DOI: 10.3390/polym13152467] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 12/03/2022] Open
Abstract
The effect of the soft and hard polyurethane (PU) segments caused by the hydrogen link in phase-separation kinetics was studied to investigate the morphological annealing of PU and thermoplastic polyurethane (TPU). The significance of the segmented PUs is to achieve enough stability for further applications in biomedical and environmental fields. In addition, other research focuses on widening the plastic features and adjusting the PU-polyimide ratio to create elastomer of the poly(urethane-imide). Regarding TPU- and PU-nanocomposite, numerous studies investigated the incorporation of inorganic nanofillers such as carbon or clay to incorporating TPU-nanocomposite in several applications. Additionally, the complete exfoliation was observed up to 5% and 3% of TPU-clay modified with 12 amino lauric acid and benzidine, respectively. PU-nanocomposite of 5 wt.% Cloisite®30B showed an increase in modulus and tensile strength by 110% and 160%, respectively. However, the nanocomposite PU-0.5 wt.% Carbone Nanotubes (CNTs) show an increase in the tensile modulus by 30% to 90% for blown and flat films, respectively. Coating PU influences stress-strain behavior because of the interaction between the soft segment and physical crosslinkers. The thermophysical properties of the TPU matrix have shown two glass transition temperatures (Tg's) corresponding to the soft and the hard segment. Adding a small amount of tethered clay shifts Tg for both segments by 44 °C and 13 °C, respectively, while adding clay from 1 to 5 wt.% results in increasing the thermal stability of TPU composite from 12 to 34 °C, respectively. The differential scanning calorimetry (DSC) was used to investigate the phase structure of PU dispersion, showing an increase in thermal stability, solubility, and flexibility. Regarding the electrical properties, the maximum piezoresistivity (10 S/m) of 7.4 wt.% MWCNT was enhanced by 92.92%. The chemical structure of the PU-CNT composite has shown a degree of agglomeration under disruption of the sp2 carbon structure. However, with extended graphene loading to 5.7 wt.%, piezoresistivity could hit 10-1 S/m, less than 100 times that of PU. In addition to electrical properties, the acoustic behavior of MWCNT (0.35 wt.%)/SiO2 (0.2 wt.%)/PU has shown sound absorption of 80 dB compared to the PU foam sample. Other nanofillers, such as SiO2, TiO2, ZnO, Al2O3, were studied showing an improvement in the thermal stability of the polymer and enhancing scratch and abrasion resistance.
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Affiliation(s)
- Tyser Allami
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor Darul Ehsan, Malaysia; (A.A.); (M.H.N.); (A.H.K.)
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Nanocomposite Polymer Electrolytes of Sodium Alginate and Montmorillonite Clay. Molecules 2021; 26:molecules26082139. [PMID: 33917730 PMCID: PMC8068159 DOI: 10.3390/molecules26082139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 11/17/2022] Open
Abstract
Nanocomposite polymer electrolytes (NPEs) were synthesized using sodium alginate (Alg) and either sodium (SCa-3-Na+)- or lithium (SCa-3-Li+)-modified montmorillonite clays. The samples were characterized by structural, optical, and electrical properties. SCa-3-Na+ and SCa-3-Li+ clays’ X-ray structural analyses revealed peaks at 2θ = 7.2° and 6.7° that corresponded to the interlamellar distances of 12.3 and 12.8 Å, respectively. Alg-based NPEs X-ray diffractograms showed exfoliated structures for samples with low clay percentages. The increase of clay content promoted the formation of intercalated structures. Electrochemical Impedance Spectroscopy revealed that Alg-based NPEs with 5 wt% of SCa-3-Na+ clay presented the highest conductivity of 1.96 × 10−2 S/cm2, and Alg with 10 wt% of SCa-3-Li+ showed conductivity of 1.30 × 10−2 S/cm2, both measured at 70 °C. From UV-Vis spectroscopy, it was possible to infer that increasing concentration of clay promoted a decrease of the samples’ transmittance and, consequently, an increase of their reflectance.
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Kesavan G, Chen S. Manganese oxide anchored on carbon modified halloysite nanotubes: An electrochemical platform for the determination of chloramphenicol. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126243] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Sun XL, Liu Z, Cheng ZL. A flexible N-doped carbon-nanofiber film reinforced by halloysite nanotubes(HNTs) for adsorptive desulfurization. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123851. [PMID: 33264927 DOI: 10.1016/j.jhazmat.2020.123851] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/19/2020] [Accepted: 08/24/2020] [Indexed: 06/12/2023]
Abstract
This report introduced the facile synthesis of the carbon-nanofiber films reinforced by halloysite nanotubes (HNTs) via electrospinning. The HNTs-reinforced N-doped carbon-nanofiber films (PAN/HNTs-CNFs) possessed the higher strength and toughness while keeping the prospective adsorption capability for different sulfur compounds in oil due to the higher N doping content. The PAN/HNTs-CNFs were produced by firstly electrospinning for the HNTs-filled polyacrylonitrile (PAN) nanofiber films, followed by the high-temperature carbonization for the conversion of the polymer films into the carbon-nanofiber films with the N doping. The characterizations testified that the HNTs were capable of fulfilling the uniform and disordered dispersion in the carbon-nanofibers. For overcoming the toughness of the carbon-nanofiber film, the HNTs filling the obviously improved the mechanical performance of the carbon-nanofiber films by the pulling-out and bridging effect. Due to accessing the lipophilic and acid surface, abundant hierarchical pore structure and highly N-doping content, the PAN/HNTs-CNFs exhibited the remarkable adsorption performances for thiophene, benzothiophene, and dibenzothiophene (46.73 mg S/g, 38.4 mg S/g and 35.03 mg S/g for 800 ppm sulfur model oil), especially being suitable to the adsorption of thiophene. Furthermore, the study on the adsorption kinetics, equilibrium isotherms, and thermodynamics of thiophene over the PAN/HNTs-CNFs were conducted to discuss the adsorption mechanism.
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Affiliation(s)
- Xiao-Lu Sun
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Zan Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Zhi-Lin Cheng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China.
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Effect of LDHs and Other Clays on Polymer Composite in Adsorptive Removal of Contaminants: A Review. CRYSTALS 2020. [DOI: 10.3390/cryst10110957] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recently, the development of a unique class of layered silicate nanomaterials has attracted considerable interest for treatment of wastewater. Clean water is an essential commodity for healthier life, agriculture and a safe environment at large. Layered double hydroxides (LDHs) and other clay hybrids are emerging as potential nanostructured adsorbents for water purification. These LDH hybrids are referred to as hydrotalcite-based materials or anionic clays and promising multifunctional two-dimensional (2D) nanomaterials. They are used in many applications including photocatalysis, energy storage, nanocomposites, adsorption, diffusion and water purification. The adsorption and diffusion capacities of various toxic contaminants heavy metal ions and dyes on different unmodified and modified LDH-samples are discussed comparatively with other types of nanoclays acting as adsorbents. This review focuses on the preparation methods, comparison of adsorption and diffusion capacities of LDH-hybrids and other nanoclay materials for the treatment of various contaminants such as heavy metal ions and dyes.
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Shaker LM, Al-Amiery AA, Kadhum AAH, Takriff MS. Manufacture of Contact Lens of Nanoparticle-Doped Polymer Complemented with ZEMAX. NANOMATERIALS 2020; 10:nano10102028. [PMID: 33076278 PMCID: PMC7602513 DOI: 10.3390/nano10102028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/15/2019] [Accepted: 11/17/2019] [Indexed: 11/16/2022]
Abstract
Many people suffer from myopia or hyperopia due to the refractive errors of the cornea all over the world. The use of high refractive index (RI), Abbe number (νd), and visible light transmittance (T%) polymeric contact lenses (CLs) holds great promise in vision error treatment as an alternative solution to the irreversible laser-assisted in situ keratomileusis (LASIK) surgery. Titanium dioxide nanoparticles (TiO2 NPs) have been suggested as a good candidate to rise the RI and maintain high transparency of a poly(methyl methacrylate) (PMMA)-TiO2 nanocomposite. This work includes a preparation of TiO2 NPs using the sol gel method as well as a synthesis of pure PMMA by free radical polarization and PMMA-TiO2 CLs using a cast molding method of 0.005 and 0.01 w/v concentrations and a study of their effect on the aberrated human eye. ZEMAX optical design software was used for eye modeling based on the Liou and Brennan eye model and then the pure and doped CLs were applied. Ocular performance was evaluated by modulation transfer function (MTF), spot diagram, and image simulation. The used criteria show that the best vision correction was obtained by the CL of higher doping content (p < 0.0001) and that the generated spherical and chromatic aberrations in the eye had been reduced.
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Affiliation(s)
- Lina M. Shaker
- Laser and Optoelectronics Engineering Department, University of Technology, Baghdad 10001, Iraq
- Correspondence: ; Tel.: +964-771-399-5509
| | - Ahmed A. Al-Amiery
- Energy and Renewable Energies Technology Center, University of Technology, Baghdad, Baghdad 10001, Iraq;
| | - Abdul Amir H. Kadhum
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia; (A.A.H.K.); (M.S.T.)
| | - Mohd S. Takriff
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia; (A.A.H.K.); (M.S.T.)
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Karahan Toprakci HA, Turgut A, Toprakci O. Nailed-bat like halloysite nanotube filled polyamide 6,6 nanofibers by electrospinning. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1819313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hatice Aylin Karahan Toprakci
- Department of Polymer Materials Engineering, Yalova University, Turkey
- Yalova University Institute of Science, Yalova University, Yalova, Turkey
| | - Ayse Turgut
- Department of Polymer Materials Engineering, Yalova University, Turkey
- Yalova University Institute of Science, Yalova University, Yalova, Turkey
| | - Ozan Toprakci
- Department of Polymer Materials Engineering, Yalova University, Turkey
- Yalova University Institute of Science, Yalova University, Yalova, Turkey
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Akrout A, Delrue A, Zatoń M, Duquet F, Spanu F, Taillades-Jacquin M, Cavaliere S, Jones D, Rozière J. Immobilisation and Release of Radical Scavengers on Nanoclays for Chemical Reinforcement of Proton Exchange Membranes. MEMBRANES 2020; 10:E208. [PMID: 32872314 PMCID: PMC7559798 DOI: 10.3390/membranes10090208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 11/25/2022]
Abstract
Mechanical and chemical stability of proton exchange membranes are crucial requirements for the development of fuel cells for durable energy conversion. To tackle this challenge, bi-functional nanoclays grafted with amino groups and with embedded radical scavengers, that is, CeO2 nanoparticles were incorporated into Aquivion® ionomer. The composite membranes presented high proton conductivity and increased stability to radical attack compared to non-modified Aquivion membranes, demonstrating the effectiveness of the approach based on radical scavenger immobilisation and release from clay nanocontainers.
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Affiliation(s)
- Alia Akrout
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Aude Delrue
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Marta Zatoń
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Fanny Duquet
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Francesco Spanu
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Mélanie Taillades-Jacquin
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Sara Cavaliere
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
- Institut Universitaire de France (IUF), CEDEX 05, 75231 Paris, France
| | - Deborah Jones
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
| | - Jacques Rozière
- Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, CEDEX 5, 34095 Montpellier, France; (A.A.); (A.D.); (M.Z.); (F.D.); (F.S.); (M.T.-J.); (D.J.); (J.R.)
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Cation Doping Approach for Nanotubular Hydrosilicates Curvature Control and Related Applications. CRYSTALS 2020. [DOI: 10.3390/cryst10080654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The past two decades have been marked by an increased interest in the synthesis and the properties of geoinspired hydrosilicate nanoscrolls and nanotubes. The present review considers three main representatives of this group: halloysite, imogolite and chrysotile. These hydrosilicates have the ability of spontaneous curling (scrolling) due to a number of crystal structure features, including the size and chemical composition differences between the sheets, (or the void in the gibbsite sheet and SiO2 tetrahedron, in the case of imogolite). Mineral nanoscrolls and nanotubes consist of the most abundant elements, like magnesium, aluminium and silicon, accompanied by uncontrollable amounts of impurities (other elements and phases), which hinder their high technology applications. The development of a synthetic approach makes it possible to not only to overcome the purity issues, but also to enhance the chemical composition of the nanotubular particles by controllable cation doping. The first part of the review covers some principles of the cation doping approach and proposes joint criteria for the semiquantitative prediction of morphological changes that occur. The second part focuses on some doping-related properties and applications, such as morphological control, uptake and release, magnetic and mechanical properties, and catalysis.
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Stavitskaya A, Glotov A, Mazurova K, Nedolivko V, Gushchin P, Huang W, Karakhanov E, Vinokurov V. Formation of ruthenium nanoparticles inside aluminosilicate nanotubes and their catalytic activity in aromatics hydrogenation: the impact of complexing agents and reduction procedure. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-1113] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Ruthenium particles with size from 1 to 7 nm were formed by reduction of ruthenium complexes with urea, ethylenediaminetetraacetic acid, acetone azine, 1,2-Bis(2-furylmethylene)hydrazine) inside halloysite nanotubes. Catalysts of different morphology with Ru content from 0.75 to 0.93 %wt. were obtained using NaBH4 or H2 as reducing agents and tested in benzene hydrogenation as a model reaction. NaBH4 reduced catalysts showed similar catalytic activity with 100 % benzene conversion after 1.5 h. Reduction with H2 resulted in a decrease of catalytic activity for all samples. High benzene conversion was achieved only in the case of 1,2-Bis(2-furylmethylene)hydrazine and ethylenediaminetetraacetic acid. It was concluded that the thermal stability of complexing agents plays a key role in activity of catalysts reduced with H2.
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Affiliation(s)
- Anna Stavitskaya
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
| | - Aleksandr Glotov
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
| | - Kristina Mazurova
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
| | - Vladimir Nedolivko
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
| | - Pavel Gushchin
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
| | - Wei Huang
- Laboratory of Coal Science and Technology , Taiyuan University of Technology , 030024, Taiyuan , China
| | - Eduard Karakhanov
- Department of Petroleum Chemistry and Organic Catalysis , Moscow State University , 119991, Moscow , Russia
| | - Vladimir Vinokurov
- Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas , 119991, Moscow , Russia
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Kuznetsov NM, Shevchenko VG, Belousov SI, Chvalun SN. Dielectric Properties of Halloysite Nanotube Suspensions in Polydimethylsiloxane. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s003602442002020x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Abdollahi Boraei SB, Nourmohammadi J, Bakhshandeh B, Dehghan MM, Gholami H, Calle Hernández D, Gonzalez Z, Ferrari B. Enhanced osteogenesis of gelatin-halloysite nanocomposite scaffold mediated by loading strontium ranelate. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1725754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Jhamak Nourmohammadi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Behnaz Bakhshandeh
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad Mehdi Dehghan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
- Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Hossein Gholami
- Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Daniel Calle Hernández
- Gregorio Marañón Health Research Institute, Madrid, Spain
- National Center for Cardiovascular Research Carlos III (CNIC), Madrid, Spain
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Agafonov AV, Grishina EP. Nanocomposites of Inorganic Oxides with Ionic Liquids. Synthesis, Properties, Application (Review). RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023619130023] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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36
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Høgsaa B, Pedersen TH, Mousavi M, Hung AM, Jensen EA, Yu D, Christiansen JDC, Sanporean CG, Fini EH. Multiscale Characterization of a Wood-Based Biocrude as a Green Compatibilizing Agent for High-Impact Polystyrene/Halloysite Nanotube Nanocomposites. ACS OMEGA 2019; 4:19934-19943. [PMID: 31788626 PMCID: PMC6882117 DOI: 10.1021/acsomega.9b02871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
This paper investigates merits of using a wood-based biocrude (WB) from aspen wood to improve the compatibility of halloysite nanotubes (HNTs) with high-impact polystyrene to develop nanocomposites with desirable thermomechanical properties. Morphological, thermal, and rheological properties of the resulting nanocomposite are used as indicators of the compatibility and dispersion of the modified HNT within the polymer matrix. Computational modeling using density functional theory is used along with laboratory experiments to provide a multiscale characterization of the above biocrude and nanocomposites. Studies performed through dispersion-corrected density functional theory calculations show that the active functional groups of WB molecules including carbonyl, hydroxyl, and carboxylic interact with the HNT surface, while their aromatic tails interact with the phenyl groups of the polystyrene. Furthermore, the studies reveal how WB molecules act as bridges between the hydrophobic polymer and the hydrophilic clay improving the compatibility. The latter was confirmed by Hansen solubility parameters and was evidenced in improved dispersion of clay within the polystyrene matrix observed by microscopy. Rheological and thermal analyses of the modified HNT and nanocomposites showed physical interactions of WB with HNT surface as well as interactions between the WB-modified HNT and the high-impact polystyrene. The WB was found to be a strong candidate as a green compatibilizing agent for HNT in high-impact polystyrene. The study results can provide insights for formulators and manufacturers looking for green compatibilizing agents in conventional nanocomposites for construction and manufacturing applications.
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Affiliation(s)
- Bjarke Høgsaa
- Aalborg
University of Denmark, Aalborg East, Aalborg 9220, Denmark
| | | | - Masoumeh Mousavi
- Arizona
State University, 660 S. College Avenue, Tempe, Arizona 85287-3005, United States
| | - Albert M. Hung
- Arizona
State University, 660 S. College Avenue, Tempe, Arizona 85287-3005, United States
| | - Erik Appel Jensen
- Aarhus
University School of Engineering, Birk centerpark 15, Herning 7400, Denmark
| | - Donghong Yu
- Aalborg
University of Denmark, Aalborg East, Aalborg 9220, Denmark
| | | | | | - Elham H. Fini
- Arizona
State University, 660 S. College Avenue, Tempe, Arizona 85287-3005, United States
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Carboxymethyl cellulose-human hair keratin hydrogel with controlled clindamycin release as antibacterial wound dressing. Int J Biol Macromol 2019; 147:1239-1247. [PMID: 31739046 DOI: 10.1016/j.ijbiomac.2019.09.251] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 09/17/2019] [Accepted: 09/30/2019] [Indexed: 11/20/2022]
Abstract
This study offers a new antibacterial wound dressing from carboxymethyl cellulose (CMC)-human hair keratin with topical clindamycin delivery. Keratin was successfully extracted from human hair. Different sponges fabricated by changing CMC to keratin ratio were characterized and compared. Halloysite nanotubes were used as carriers to control the clindamycin release. Various characterization techniques were used to determine the effects of keratin addition on the structure, morphology, physical properties, drug release, antibacterial activity, and cellular behavior of CMC hydrogels. As proved by SEM and EDS, porous structure with interconnected pores was successfully formed and clindamycin-loaded HNTs were uniformly dispersed within the porous structures. Increasing the keratin in CMC hydrogel not only lowered its water vapor transmission rate to a suitable range for wound healing but also improved the water stability of CMC hydrogel. The in vitro release study indicated that clindamycin was released slower in samples containing higher keratin and the Fickian diffusion mechanism controlled their release profile. The fabricated dressing effectively inhibits S. aureus bacterial colonies growth after 24 h. Fibroblast culturing on the fabricated sponges indicated that cellular attachment, proliferation, and spreading were significantly enhanced with increasing the keratin amount.
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Venkatesh C, Clear O, Major I, Lyons JG, Devine DM. Faster Release of Lumen-Loaded Drugs than Matrix-Loaded Equivalent in Polylactic Acid/Halloysite Nanotubes. MATERIALS 2019; 12:ma12111830. [PMID: 31195738 PMCID: PMC6600978 DOI: 10.3390/ma12111830] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 05/29/2019] [Accepted: 06/03/2019] [Indexed: 12/26/2022]
Abstract
Nanocomposite-based drug delivery systems with intrinsic controlled release properties are of great interest in biomedical applications. We report a novel polylactic acid (PLA)/halloysite nanotube (HNT) nanocomposite-based drug delivery system. PLA/HNT nanocomposites have shown immense potential for use in biomedical applications due to their favorable cyto- and hemo-compatibility. The objective of this study was to evaluate the release of active pharmaceutical ingredients (API) from PLA/HNT composites matrix and the effect of preloading the API into the lumen of the HNT on its release profile. Aspirin was used in this study as a model drug as it is a common nonsteroidal anti-inflammatory and antiplatelet agent widely used for various medical conditions. These two types of drug-loaded PLA/HNT nanocomposites were characterised by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), surface wettability and mechanical testing. Statistical analysis was conducted on numerical data. Drug entrapment and in vitro drug release studies were conducted using UV spectrophotometry. Results indicate that aspirin was successfully loaded into the lumen of HNT, which resulted in the sustained release of aspirin from the nanocomposites. Furthermore, the addition of HNT into the polymer matrix increased the mechanical properties, indicating its suitability as a drug-eluting reinforcing agent.
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Affiliation(s)
- Chaitra Venkatesh
- Material Research Institute, Athlone Institute of Technology, Athlone N37 FK59, Ireland.
| | - Oran Clear
- Faculty of Engineering and Informatics, Athlone Institute of Technology, Athlone N37 FK59, Ireland.
| | - Ian Major
- Material Research Institute, Athlone Institute of Technology, Athlone N37 FK59, Ireland.
| | - John G Lyons
- Faculty of Engineering and Informatics, Athlone Institute of Technology, Athlone N37 FK59, Ireland.
| | - Declan M Devine
- Material Research Institute, Athlone Institute of Technology, Athlone N37 FK59, Ireland.
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Massoumi H, Nourmohammadi J, Marvi MS, Moztarzadeh F. Comparative study of the properties of sericin-gelatin nanofibrous wound dressing containing halloysite nanotubes loaded with zinc and copper ions. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1534115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hamed Massoumi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Jhamak Nourmohammadi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Mehri Sadat Marvi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Fathollah Moztarzadeh
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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Halloysite-alkaline phosphatase system-A potential bioactive component of scaffold for bone tissue engineering. Colloids Surf B Biointerfaces 2018; 173:1-8. [PMID: 30261344 DOI: 10.1016/j.colsurfb.2018.09.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 09/12/2018] [Accepted: 09/16/2018] [Indexed: 11/23/2022]
Abstract
Alkaline phosphatase (ALP) was sucessfully incorporated into the halloysite (HAL) nanotubes, as confirmed by FTIR-ATR and XRD analyses. The loading efficiency (LE) of ALP was found to be 13.5%, while its encapsulation efficiency (EE) was estimated to be around 27%, as determined using the Bradford test. The influence of the immobilization in HAL on the enzyme activity was measured using standard ALP activity assay. Immobilized ALP effectively induced the bomineralization process, as showed by SEM, EDS, and XRD studies. As a result, calcium phosphate was produced in the form of hydroxyapatite cauliflower-like structures, with a slight content of calcium hydroxide. Interestingly, the encapsulation of ALP guest molecules in the HAL nanotubes considerably increased its thermal stability, most probably due to the heat sink effect. The activity of HAL-bound ALP was also found to be pH-independent in the wide range of pH values (3-10) due to the amphoteric nature of the aluminum oxide lining the HAL nanotube internal surface. Due to an increased resistance to the unfavorable conditions, which are often encountered during scaffold preparation or sterilization, ALP-HAL nanocomposite material may constitute an attractive bioactive component of the scaffolds for bone regeneration.
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41
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A Review of the Synthesis and Applications of Polymer–Nanoclay Composites. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8091696] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent advancements in material technologies have promoted the development of various preparation strategies and applications of novel polymer–nanoclay composites. Innovative synthesis pathways have resulted in novel polymer–nanoclay composites with improved properties, which have been successfully incorporated in diverse fields such as aerospace, automobile, construction, petroleum, biomedical and wastewater treatment. These composites are recognized as promising advanced materials due to their superior properties, such as enhanced density, strength, relatively large surface areas, high elastic modulus, flame retardancy, and thermomechanical/optoelectronic/magnetic properties. The primary focus of this review is to deliver an up-to-date overview of polymer–nanoclay composites along with their synthesis routes and applications. The discussion highlights potential future directions for this emerging field of research.
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Chao C, Guan H, Zhang J, Liu Y, Zhao Y, Zhang B. Immobilization of laccase onto porous polyvinyl alcohol/halloysite hybrid beads for dye removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:809-818. [PMID: 29431726 DOI: 10.2166/wst.2017.594] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Laccase was immobilized in polyvinyl alcohol beads containing halloysite nanotubes (PVA/HNTs) to improve the stability and reusability of enzyme. The porous structure of PVA/HNTs beads facilitates the entrapment of enzyme and prevents the leaching of immobilized laccase as well. Halloysite nanotubes act as bridge to connect the adjacent pores, facilitating the electron transfer and enhancing the mechanical properties. PVA/HNTs beads have high laccase immobilization capacity (237.02 mg/g) and activity recovery yield (79.15%), indicating it can be used as potential support for laccase immobilization. Compared with free laccase, the immobilized laccase on hybrid beads exhibits enhanced pH tolerance (even at pH 8.0), good thermal stability (57.5% of the initial activity can be maintained at 75 °C), and excellent storage stability (81.17% of enzyme activity could be retained after storage at 4 °C for 5 weeks compared with that for free enzyme of 60%). Also, the removal efficiency for reactive blue can reach as high as 93.41% in the presence of redox mediator 2,2-azinobis(3-ethylbenzthiazoline-6-sulfonate), in which adsorption and degradation exist simultaneously. The remarkable pH tolerance, thermal and storage stability, and reuse ability imply potential application of porous PVA/HNTs immobilized enzyme in environmental fields.
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Affiliation(s)
- Cong Chao
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail: ; School of Energy and Environment Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Huijuan Guan
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail:
| | - Jun Zhang
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail:
| | - Yang Liu
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail:
| | - Yafei Zhao
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail: ; Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bing Zhang
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China E-mail:
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Chen XG, Li RC, Zhang AB, Lyu SS, Liu ST, Yan KK, Duan W, Ye Y. Preparation of hollow iron/halloysite nanocomposites with enhanced electromagnetic performances. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171657. [PMID: 29410865 PMCID: PMC5792942 DOI: 10.1098/rsos.171657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/15/2017] [Indexed: 06/08/2023]
Abstract
Nanostructures loaded on halloysite nanotubes (HNTs) have attracted global interest, because the nanotubular HNTs could extend the range of their potential applications. In this study, we fabricated a novel nanocomposite with hollow iron nanoparticles loaded on the surface of HNTs. The structure of the iron nanoparticles can be adjusted by ageing time. Owing to the increased remnant magnetization and coercivity values, the nanocomposites loaded with hollow iron nanoparticles showed better electromagnetic performance than that with solid iron nanoparticles. This study opens a new pathway to fabricate halloysite nanotubular nanocomposites that may gain applications in the catalytic degradation of organic pollutants and electromagnetic wave absorption.
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Affiliation(s)
- Xue-Gang Chen
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
| | - Ru-Chang Li
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
| | - Ao-Bo Zhang
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
- Zhejiang Institute of Geological Survey, Hangzhou 310007, People's Republic of China
| | - Shuang-Shuang Lyu
- Zhejiang Institute of Geology and Mineral Resources, Hangzhou 310007, People's Republic of China
| | - Shu-Ting Liu
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
- College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Kang-Kang Yan
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
| | - Wei Duan
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
| | - Ying Ye
- Ocean College, Zhejiang University, Zhoushan 316021, People's Republic of China
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Weisman JA, Jammalamadaka U, Tappa K, Mills DK. Doped Halloysite Nanotubes for Use in the 3D Printing of Medical Devices. Bioengineering (Basel) 2017; 4:E96. [PMID: 29244755 PMCID: PMC5746763 DOI: 10.3390/bioengineering4040096] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 01/15/2023] Open
Abstract
Previous studies have established halloysite nanotubes (HNTs) as viable nanocontainers capable of sustained release of a variety of antibiotics, corrosion agents, chemotherapeutics and growth factors either from their lumen or in outer surface coatings. Accordingly, halloysite nanotubes (HNTs) hold great promise as drug delivery carriers in the fields of pharmaceutical science and regenerative medicine. This study explored the potential of 3D printing drug doped HNT constructs. We used a model drug, gentamicin (GS) and polylactic acid (PLA) to fabricate GS releasing disks, beads, and pellets. Gentamicin was released from 3D printed constructs in a sustained manner and had a superior anti-bacterial growth inhibition effect that was dependent on GS doping concentration. While this study focused on a model drug, gentamicin, combination therapy is possible through the fabrication of medical devices containing HNTs doped with a suite of antibiotics or antifungals. Furthermore, tailored dosage levels, suites of antimicrobials, delivered locally would reduce the toxicity of individual agents, prevent the emergence of resistant strains, and enable the treatment of mixed infections.
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Affiliation(s)
- Jeffery A Weisman
- Center for Biomedical Engineering and Rehabilitation Science, Ruston, LA 71270, USA.
| | | | - Karthik Tappa
- Center for Biomedical Engineering and Rehabilitation Science, Ruston, LA 71270, USA.
| | - David K Mills
- Center for Biomedical Engineering and Rehabilitation Science, Ruston, LA 71270, USA.
- School of Biological Sciences, Louisiana Tech University, Ruston, LA 71272, USA.
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Gaaz TS, Kadhum AAH, Michael PKA, Al-Amiery AA, Sulong AB, Nassir MH, Jaaz AH. Unique Halloysite Nanotubes⁻Polyvinyl Alcohol⁻Polyvinylpyrrolidone Composite Complemented with Physico⁻Chemical Characterization. Polymers (Basel) 2017; 9:polym9060207. [PMID: 30970887 PMCID: PMC6431940 DOI: 10.3390/polym9060207] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 05/27/2017] [Accepted: 05/30/2017] [Indexed: 11/18/2022] Open
Abstract
A halloysite nanotubes–polyvinyl alcohol–polyvinylpyrrolidone (HNTs–PVA–PVP) composite has been investigated for a quite long time aiming at improving the physico–chemical characterization of HNTs. In this work, HNTs–PVA–PVP composite were prepared based on a unique procedure characterized by crosslinking two polymers with HNTs. The composite of two polymers were modified by treating HNTs with phosphoric acid (H3PO4) and by using malonic acid (MA) as a crosslinker. The composite was also treated by adding the dispersion agent sodium dodecyl sulfate (SDS). The HNTs–PVA–PVP composite shows better characteristics regarding agglomeration when HNTs is treated in advance by H3PO4. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), brunauer–emmett–teller (BET), size distribution, and atomic force microscopy (AFM) are used to characterize the physio-chemical properties of the composite. FTIR shows additional peaks at 2924.29, 1455.7, and 682.4 cm−1 compared to the neat HNTs due to adding MA. Despite that, the XRD spectra do not show a significant difference, the decrease in peak intensity could be attributed to the addition of semi-crystalline PVA and the amorphous PVP. The images taken by TEM and FESEM show the possible effects of MA on the morphology and internal feature of HNTs–PVA–PVP composite treated by MA by showing the deformation of the matrix. The BET surface area increased to 121.1 m2/g compared to the neat HNTs at 59.1 m2/g. This result, the second highest recorded result, is considered a breakthrough in enhancing the properties of HNTs–PVA–PVP composite, and treatment by MA crosslinking may attribute to the size and the number of the pores. The results from these techniques clearly showed that a significant change has occurred for treated HNTs–PVA–PVP composite where MA was added. The characterization of HNTs–PVA–PVP composite with and without treating HNTs and using crosslinker may lead to a better understanding of this new composites as a precursor to possible applications in the dentistry field.
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Affiliation(s)
- Tayser Sumer Gaaz
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, University Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia.
- Department of Machinery Equipment Engineering Techniques, Technical College Al-Musaib, Al-Furat Al-Awsat Technical University, Al-Musaib, Babil 51009, Iraq.
| | - Abdul Amir H Kadhum
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia.
| | - Patina Kiah Anak Michael
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia.
| | - Ahmed A Al-Amiery
- Energy and Renewable Energies Technology Centre, University of Technology, Baghdad 10001, Iraq.
| | - Abu Bakar Sulong
- Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, University Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia.
| | - Mohamed H Nassir
- Program of Chemical Engineering, Taylor's University-Lakeside Campus, Subang Jaya, Selangor 47500, Malaysia.
| | - Ahed Hameed Jaaz
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia.
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