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Ndeh NT, Sairiam S, Nuisin R. Graphene oxide-chitosan coated PVDF adsorptive microfiltration membrane: Enhancing dye removal and antifouling properties. Int J Biol Macromol 2024; 282:137005. [PMID: 39476912 DOI: 10.1016/j.ijbiomac.2024.137005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2024] [Revised: 10/03/2024] [Accepted: 10/26/2024] [Indexed: 11/07/2024]
Abstract
This study investigates graphene oxide (GO) modified poly(vinylidene fluoride) (PVDF) membranes focusing on their dye rejection efficiency and their antifouling properties against bovine serum albumin (BSA). These membranes were prepared by modifying commercial PVDF membrane with a thin layer of GO nanosheets and chitosan (CS) using vacuum filtration. The synergistic physicochemical properties of the GO-CS/PVDF membranes were analyzed by XRD, FTIR, Raman, and XPS spectroscopy. The surface morphologies were observed by SEM and AFM microscopy, and WCA measurements. The deposition of GO and CS in the presence of citric acid resulted in a decrease in pore size and an increase in hydrophilicity. Modified membranes showed enhanced rejection of RB and MB, with rates increasing from 13.0 to 96.0 % and 28.3 to 69.1 %, respectively. Antifouling studies using BSA on selected membranes outperformed pristine membranes, which had higher irreversible fouling due to pore blockage. GO-CS/PVDF membranes exhibited higher flux recovery and lower irreversible fouling due to increased hydrophilicity, which prevents tight cake layer formation. Minimal detachment of the GO-CS layer during the long-term stability test is confirmed by minor fluctuations in dye flux and rejection. In summary, enhancing PVDF membranes with GO and CS augments dye rejection rates and bolsters antifouling properties.
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Affiliation(s)
- Nji T Ndeh
- International Program in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand
| | - Sermpong Sairiam
- International Program in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand; Water Science and Technology for Sustainable Environment Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Roongkan Nuisin
- International Program in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand; Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
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2
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Aishwarya A, Adaval A, Mondal S, Dasgupta T, Bhattacharyya AR. Influence of H-bonding on the crystalline structures and ferroelectric and piezoelectric properties of novel nanogenerators of the lithium salt of 6-amino hexanoic acid incorporated poly(vinylidene fluoride) composites. Phys Chem Chem Phys 2024; 26:26314-26329. [PMID: 39380553 DOI: 10.1039/d4cp02497d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
The lithium salt of 6-amino hexanoic acid (Li-AHA) was melt-mixed with poly(vinylidene fluoride) (PVDF), wherein the Li-AHA concentration was varied between 1-15 wt% with the aim of establishing hydrogen bonding between the NH2 functionality of Li-AHA and the -CF2 moieties of PVDF. This was followed by compression-moulding as well as solution-casting to make PVDF/Li-AHA composite thin films. FTIR analysis established interactions between the -CF2 groups in PVDF with amine functional moieties of Li-AHA. Moreover, FTIR analysis estimated that the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA exhibited the highest polar phase fraction of ∼60%. Furthermore, ferroelectric analysis showed that the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA exhibited the highest remnant polarization of 0.07 μC cm-2 (at 50 Hz, 1000 V) from the polarization versus electric field loop. Finally, energy harvester devices were fabricated using compression-moulded and solution-cast PVDF/Li-AHA composite films, in which a maximum output voltage of ∼110 V was obtained in the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA. The devices also displayed a maximum power density of 75 μW cm-2 and 85 μW cm-2 for those fabricated via compression-moulding and solution-casting, respectively. Three different capacitors were efficiently charged by the tapping of the devices made from solution-cast and compression-moulded composite films of 15 wt% Li-AHA. An interrelationship between processing, structure and properties was successfully established in the PVDF/Li-AHA composites with greatly enhanced piezoelectric properties.
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Affiliation(s)
- Ananya Aishwarya
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Akanksha Adaval
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Suvankar Mondal
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Titas Dasgupta
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Arup R Bhattacharyya
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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3
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Passero A, Ferreira KM, Diniz MF, Sanches NB, Amado JCQ, Dutra RDECL. Quantification of natural rubber blends by reflection/reflectance infrared and confocal Raman spectroscopy: a comparison of statistical methods. AN ACAD BRAS CIENC 2024; 96:e20230387. [PMID: 38865508 DOI: 10.1590/0001-3765202420230387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 10/26/2023] [Indexed: 06/14/2024] Open
Abstract
The blend of butadiene and acrylonitrile copolymer (NBR) with natural poly-cis-isoprene (NR) shows increased resistance to swelling in solvents in comparison to the individual components. In aerospace, NBR rubber is used as thermal protection for rockets and shall not contain other polymers, even in low contents, otherwise, it can affect the protection performance and rocket safety by causing detachment of the elastomer/propellant interface; therefore, this investigation presents methodologies to determine the NR/NBR contents. This study explores different analytical techniques, such as Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy, in the mid-infrared (MIR) by reflection and in the near-infrared by reflectance (NIRA) modes, Furthermore, quantification strategies by univariate, bivariate and multivariate (chemometric) models are evaluated and compared. A proposed methodology, based on multivariate Raman microscopy with partial least squares regression (PLS), showed high linearity (R2 > 0.99) and low error (< 0.82 %). The validation of FT-MIR data for the CH3, which presented lower error (1.3%) than vinylidene band (6%), showed that both methodologies (reflection and NIRA reflectance) can be used for the quantification of NR in NR/NBR. These results constitute a contribution to the state of the art in researching industrial and aerospace elastomeric applications.
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Affiliation(s)
- Alan Passero
- Instituto Tecnológico de Aeronáutica (ITA), Departamento de Ciência e Tecnologia Aeroespacial (DCTA), Divisão de Ciências Fundamentais, Departamento de Química, Praça Marechal Eduardo Gomes, 50, Vila das Acácias, 12228-900 São José dos Campos, SP, Brazil
| | - Karyn M Ferreira
- Instituto Tecnológico de Aeronáutica (ITA), Departamento de Ciência e Tecnologia Aeroespacial (DCTA), Divisão de Ciências Fundamentais, Departamento de Química, Praça Marechal Eduardo Gomes, 50, Vila das Acácias, 12228-900 São José dos Campos, SP, Brazil
| | - Milton F Diniz
- Instituto de Aeronáutica e Espaço (IAE), Departamento de Ciência e Tecnologia Aeroespacial (DCTA), Divisão de Propulsão, Praça Marechal Eduardo Gomes, 50, Vila das Acácias, 12228-904 São José dos Campos, SP, Brazil
| | - Natalia B Sanches
- Centro Universitário Sant'Anna (UNISANT'ANNA), Rua Voluntários da Pátria, 257, Santana, 02011-000 São Paulo, SP, Brazil
| | - Javier Carlos Q Amado
- Institute for Scientific and Technical Research for the Defense (CITEDEF), Applied Chemistry Department, Avenida JB de La Salle, 4397, B1603ALO Buenos Aires, Argentina
| | - Rita DE Cássia L Dutra
- Instituto Tecnológico de Aeronáutica (ITA), Departamento de Ciência e Tecnologia Aeroespacial (DCTA), Divisão de Ciências Fundamentais, Departamento de Química, Praça Marechal Eduardo Gomes, 50, Vila das Acácias, 12228-900 São José dos Campos, SP, Brazil
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Rahman M, Mahady Dip T, Padhye R, Houshyar S. Review on electrically conductive smart nerve guide conduit for peripheral nerve regeneration. J Biomed Mater Res A 2023; 111:1916-1950. [PMID: 37555548 DOI: 10.1002/jbm.a.37595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/29/2023] [Accepted: 07/26/2023] [Indexed: 08/10/2023]
Abstract
At present, peripheral nerve injuries (PNIs) are one of the leading causes of substantial impairment around the globe. Complete recovery of nerve function after an injury is challenging. Currently, autologous nerve grafts are being used as a treatment; however, this has several downsides, for example, donor site morbidity, shortage of donor sites, loss of sensation, inflammation, and neuroma development. The most promising alternative is the development of a nerve guide conduit (NGC) to direct the restoration and renewal of neuronal axons from the proximal to the distal end to facilitate nerve regeneration and maximize sensory and functional recovery. Alternatively, the response of nerve cells to electrical stimulation (ES) has a substantial regenerative effect. The incorporation of electrically conductive biomaterials in the fabrication of smart NGCs facilitates the function of ES throughout the active proliferation state. This article overviews the potency of the various categories of electroactive smart biomaterials, including conductive and piezoelectric nanomaterials, piezoelectric polymers, and organic conductive polymers that researchers have employed latterly to fabricate smart NGCs and their potentiality in future clinical application. It also summarizes a comprehensive analysis of the recent research and advancements in the application of ES in the field of NGC.
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Affiliation(s)
- Mustafijur Rahman
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
- Department of Dyes and Chemical Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Tanvir Mahady Dip
- Department of Materials, University of Manchester, Manchester, UK
- Department of Yarn Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Rajiv Padhye
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
| | - Shadi Houshyar
- School of Engineering, RMIT University, Melbourne, Victoria, Australia
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Wilczewski S, Skórczewska K, Tomaszewska J, Osial M, Dąbrowska A, Nikiforow K, Jenczyk P, Grzywacz H. Graphene Modification by Curcuminoids as an Effective Method to Improve the Dispersion and Stability of PVC/Graphene Nanocomposites. Molecules 2023; 28:molecules28083383. [PMID: 37110616 PMCID: PMC10143296 DOI: 10.3390/molecules28083383] [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: 03/22/2023] [Revised: 04/04/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
A large amount of graphene-related research is its use as a filler for polymer composites, including thin nanocomposite films. However, its use is limited by the need for large-scale methods to obtain high-quality filler, as well as its poor dispersion in the polymer matrix. This work presents polymer thin-film composites based on poly(vinyl chloride) (PVC) and graphene, whose surfaces were modified by curcuminoids. TGA, UV-vis, Raman spectroscopy, XPS, TEM, and SEM methods have confirmed the effectiveness of the graphene modification due to π-π interactions. The dispersion of graphene in the PVC solution was investigated by the turbidimetric method. SEM, AFM, and Raman spectroscopy methods evaluated the thin-film composite's structure. The research showed significant improvements in terms of graphene's dispersion (in solutions and PVC composites) following the application of curcuminoids. The best results were obtained for materials modified with compounds obtained from the extraction of the rhizome of Curcuma longa L. Modification of the graphene's surface with these compounds also increased the thermal and chemical stability of PVC/graphene nanocomposites.
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Affiliation(s)
- Sławomir Wilczewski
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3 Street, 85-326 Bydgoszcz, Poland
| | - Katarzyna Skórczewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3 Street, 85-326 Bydgoszcz, Poland
| | - Jolanta Tomaszewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3 Street, 85-326 Bydgoszcz, Poland
| | - Magdalena Osial
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B Street, 02-106 Warsaw, Poland
| | - Agnieszka Dąbrowska
- Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Kostiantyn Nikiforow
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Piotr Jenczyk
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B Street, 02-106 Warsaw, Poland
| | - Hubert Grzywacz
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B Street, 02-106 Warsaw, Poland
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Prihandana GS, Sriani T, Mahardika M. Effect of Polyvinylpyrrolidone on Polyvinylidene Fluoride/Hydroxyapatite- Blended Nanofiltration Membranes: Characterization and Filtration Properties. RECENT PATENTS ON NANOTECHNOLOGY 2023; 17:51-58. [PMID: 35236275 DOI: 10.2174/1872210516666220302095010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/15/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION The application of polyvinylidene fluoride (PVDF) as a filtration membrane is limited due to its hydrophobicity. This paper elaborated on the fabrication process of nanofiltration PVDF membrane incorporating various quantities of hydrophilic polyvinylpyrrolidone (PVP) and hydroxyapatite (HA) using a wet phase inversion method to improve its hydrophilicity. METHODS The membrane was fabricated by using the wet phase inversion method. It was then characterized in terms of water permeability, water contact angle, water content, surface energy, and surface porosity. Bacteria and Fe ions filtration was conducted to investigate the membrane filtration performance. RESULTS The PVDF/PVP/HA-blended membrane showed the highest water permeability (6,165 LMH/Bar), water content (45.2 %), and surface energy (104.1 mN/m) when 2 wt.% of PVP was introduced into the base polymer PVDF. This fabricated membrane, labeled as PVP 2.0, also showed the lowest contact angle (64°) and the highest surface porosity (42%). CONCLUSION Overall, the PVP introduction patents into the polymeric membrane doping solution potentially improves membrane hydrophilicity and permeability.
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Affiliation(s)
- Gunawan Setia Prihandana
- Department of Industrial Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Surabaya 60115, Indonesia
| | - Tutik Sriani
- Department of Research and Development, PT. Global Meditek Utama, Sardonoharjo, Ngaglik, Sleman, Yogyakarta 55581, Indonesia
| | - Muslim Mahardika
- Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia
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Sadat Z, Farrokhi-Hajiabad F, Lalebeigi F, Naderi N, Ghafori Gorab M, Ahangari Cohan R, Eivazzadeh-Keihan R, Maleki A. A comprehensive review on the applications of carbon-based nanostructures in wound healing: from antibacterial aspects to cell growth stimulation. Biomater Sci 2022; 10:6911-6938. [PMID: 36314845 DOI: 10.1039/d2bm01308h] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A wound is defined as damage to the integrity of biological tissue, including skin, mucous membranes, and organ tissues. The treatment of these injuries is an important challenge for medical researchers. Various materials have been used for wound healing and dressing applications among which carbon nanomaterials have attracted significant attention due to their remarkable properties. In the present review, the latest studies on the application of carbon nanomaterials including graphene oxide (GO), reduced graphene oxide (rGO), carbon dots (CDs), carbon quantum dots (CQDs), carbon nanotubes (CNTs), carbon nanofibers (CNFs), and nanodiamonds (NDs) in wound dressing applications are evaluated. Also, a variety of carbon-based nanocomposites with advantages such as biocompatibility, hemocompatibility, reduced wound healing time, antibacterial properties, cell-adhesion, enhanced mechanical properties, and enhanced permeability to oxygen has been reported for the treatment of various wounds.
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Affiliation(s)
- Zahra Sadat
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Farzaneh Farrokhi-Hajiabad
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Farnaz Lalebeigi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Nooshin Naderi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Mostafa Ghafori Gorab
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Reza Ahangari Cohan
- Nanobiotechnology Department, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran.
| | - Reza Eivazzadeh-Keihan
- Nanobiotechnology Department, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran.
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
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Fu G, Shi Q, Liang Y, He Y, Xue R, He S, Wu Y, Zhou R. Eu 3+-Doped Electrospun Polyvinylidene Fluoride-Hexafluoropropylene/Graphene Oxide Multilayer Composite Nanofiber for the Fabrication of Flexible Pressure Sensors. ACS OMEGA 2022; 7:23521-23531. [PMID: 35847276 PMCID: PMC9280763 DOI: 10.1021/acsomega.2c02024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of flexible materials with higher piezoelectric properties and electrostrictive response is of great significance in many applications such as wearable functional devices, flexible sensors, and actuators. In this study, we report an efficient fabrication strategy to construct a highly sensitive (0.72 kPa-1), red light-emitting flexible pressure sensor using electrospun Eu3+-doped polyvinylidene fluoride-hexafluoropropylene/graphene oxide composite nanofibers using a layer-by-layer technology. The high β-phase concentration (96.3%) was achieved from the Eu3+-doped P(VDF-HFP)/GO nanofibers, leading to a high piezoelectricity of the composite nanofibers. We observed that a pressure sensor is enabled to generate an output voltage of 4.5 V. Furthermore, Eu3+-doped P(VDF-HFP)/GO composite nanofiber-based pressure sensors can also be used as an actuator as it has a good electrostrictive effect. At the same time, the nanofiber membrane has excellent ferroelectric properties and good fluorescence properties. These results indicate that this material has great application potential in the fields of photoluminescent fabrics, flexible sensors, soft actuators, and energy storage devices.
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Affiliation(s)
- Guimao Fu
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Qisong Shi
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Yongri Liang
- State
Key Lab of Metastable Materials Science and Technology, School of
Materials Science and Engineering, Yanshan
University, Hebei 066012, China
| | - Yongqing He
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Rui Xue
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Shifeng He
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Yibo Wu
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Rongji Zhou
- Beijing
Key Lab of Special Elastomeric Composite Materials, College of New
Materials and Chemical Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
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Elabbasy MT, Algahtani FD, Al-Harthi HF, Abd El-Kader M, Eldrehmy EH, Abd El-Rahman GI, El-Morsy M, Menazea A. Optimization of compositional manipulation for hydroxyapatite modified with boron oxide and graphene oxide for medical applications. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY 2022; 18:5419-5431. [DOI: 10.1016/j.jmrt.2022.04.088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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10
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Compositional Adjusting and Antibacterial Improvement of Hydroxyapatite/Nb2O5/Graphene Oxide for Medical Applications. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02266-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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11
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Tunning the Physical Properties of PVDF/PVC/Zinc Ferrite Nanocomposites Films for More Efficient Adsorption of Cd (II). J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02176-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Ahmad W, Ahmad Q, Yaseen M, Ahmad I, Hussain F, Mohamed Jan B, Ikram R, Stylianakis MM, Kenanakis G. Development of Waste Polystyrene-Based Copper Oxide/Reduced Graphene Oxide Composites and Their Mechanical, Electrical and Thermal Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2372. [PMID: 34578688 PMCID: PMC8464779 DOI: 10.3390/nano11092372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 11/16/2022]
Abstract
The current study reports the effect of different wt. ratios of copper oxide nanoparticle (CuO-NPs) and reduced graphene oxide (rGO) as fillers on mechanical, electrical, and thermal properties of waste polystyrene (WPS) matrix. Firstly, thin sheets of WPS-rGO-CuO composites were prepared through solution casting method with different ratios, i.e., 2, 8, 10, 15 and 20 wt.% of CuO-NPs and rGO in WPS matrix. The synthesized composite sheets were characterized by Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray (EDX), X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). The electrical conductance and mechanical strength of the prepared composites were determined by using LCR meter and universal testing machine (UTM). These properties were dependent on the concentrations of CuO-NPs and rGO. Results display that the addition of both fillers, i.e., rGO and CuO-NPs, collectively led to remarkable increase in the mechanical properties of the composite. The incorporation of rGO-CuO: 15% WPS sample, i.e., WPS-rGO-CuO: 15%, has shown high mechanical strength with tensile strength of 25.282 MPa and Young modulus of 1951.0 MPa, respectively. Similarly, the electrical conductance of the same composite is also enhanced from 6.7 × 10-14 to 4 × 10-7 S/m in contrast to WPS at 2.0 × 106 Hz. The fabricated composites exhibited high thermal stability through TGA analysis in terms of 3.52% and 6.055% wt. loss at 250 °C as compared to WPS.
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Affiliation(s)
- Waqas Ahmad
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan; (Q.A.); (M.Y.); (I.A.)
| | - Qaizar Ahmad
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan; (Q.A.); (M.Y.); (I.A.)
| | - Muhammad Yaseen
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan; (Q.A.); (M.Y.); (I.A.)
| | - Imtiaz Ahmad
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan; (Q.A.); (M.Y.); (I.A.)
| | - Fida Hussain
- Department of Chemical and Energy Engineering, Pak-Austria Fachhochschule, Institute of Applied Science & Technology, Haripur 22621, Pakistan;
| | - Badrul Mohamed Jan
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Rabia Ikram
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Minas M. Stylianakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, Vasilika Vouton, GR-700 13 Heraklion, Greece; (M.M.S.); (G.K.)
| | - George Kenanakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, Vasilika Vouton, GR-700 13 Heraklion, Greece; (M.M.S.); (G.K.)
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