The Experts below are selected from a list of 8421 Experts worldwide ranked by ideXlab platform
Majid Montazer - One of the best experts on this subject based on the ideXlab platform.
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Reduction of 4-nitrophenol to 4-aminophenol over sonoimmobilized silver/reduced graphene oxide nanocomposites on Polyester Fabric
Fibers and Polymers, 2017Co-Authors: Atousa Moazami, Majid Montazer, Mehdi Kamali DolatabadiAbstract:The current paper is aimed to compare different arrangement of Ag nanoparticles within silver/reduced graphene oxide (Ag/rGO) nanocomposites on the Polyester Fabric. rGO sheets cannot be dispersed in the water for long time however, thin layer surfactant-free Ag/rGO nanocomposites were immobilized on the surface of Polyester. This leads to attain the preserved array of nanocomposites for a long time. TEM, FESEM/EDX, XRD, XPS, cyclic voltammetry, catalytic activity and electrical resistivity were used to characterize Ag/rGO nanocomposites coated Polyester Fabric. Interestingly, sonoimmobilization of Ag/GO produced an even coating layer of nanocomposites on the Polyester Fabric. The prepared Fabric can be used as a high active and stable nanocatalyst for reduction of 4-nitrophenol (4-NP) in water at room temperature. The created flexible and light Fabric showed low electrical resistance and high catalytic activity, wherein sonoimmobilization of Ag/rGO treated samples indicated highest catalytic activity as 4-NP solution completely reduced to 4- AP with assistance of 2×4 cm2 treated Polyester after 25 min. On the other hand, introducing sonoprepared silver nanoparticles among graphene nanosheets led to significant lowering of electrical resistivity from 43 kΩ/square in mechanical stirring methodto 2 kΩ/square using ultrasound.
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photo and biocatalytic activities along with uv protection properties on Polyester Fabric through green in situ synthesis of cauliflower like cuo nanoparticles
Journal of Photochemistry and Photobiology B-biology, 2017Co-Authors: Ali Bashiri Rezaie, Majid MontazerAbstract:Abstract In this paper, a facile environmentally friendly method is introduced for in-situ synthesis and Fabrication of cauliflower-like CuO nanoparticles on the Polyester Fabric to produce photo and biocatalytic activities with UV protection properties on Polyester Fabric. The ash of burnt leaves and stems of Seidlitzia rosmarinus plant called Keliab was used as a natural and nontoxic alkaline source for simultaneous synthesis of CuO nanoparticles and surface modification of Polyester without using any other compounds. The images of field-emission scanning electron microscopy, patterns of energy-dispersive spectroscopy, UV–visible spectrum and X-ray diffraction confirmed successful synthesis and loading of CuO nanoparticles on the Polyester Fabric. The treated Fabrics showed very good antibacterial activities toward two pathogen bacteria including Staphylococcus aureus as a Gram-positive and Escherichia coli as a Gram-negative bacteria with no adverse effects on human dermal fibroblasts based on MTT test. The treated Fabrics confirmed significant photocatalytic activity for degradation of methylene blue under sunlight, self-cleaning properties under UV light and also UV protection properties. Further a colorant effect along with an improvement in the wettability and mechanical properties of the treated Fabrics were indicated. Overall, this method can be applied as a clean route for producing photo and bio active textiles protecting against UV irradiation.
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Tunable functional properties on Polyester Fabric using simultaneous green reduction of graphene oxide and silver nitrate
Fibers and Polymers, 2016Co-Authors: Atousa Moazami, Majid Montazer, Mehdi Kamali DolatabadiAbstract:Here, a novel method is introduced to create tunable properties on the Polyester Fabric through diverse chemical modifications. The Polyester Fabric was primarily modified with NaOH or ethylenediamine to enhance the surface activity. This will produce diverse chemical groups on the Polyester Fabric surface including carboxylate, hydroxyl and amine groups. The Fabric was treated with grahene oxide through exhaustion method. The silver nitrate was then added and simultaneously reduced with grapheme oxide using ascorbic acid and ammonia to produce reduced graphen oxide/silver nanocomposites (rGO/Ag) on the Fabric surface. The synthesized nanocomposites were characterized by TEM and Raman spectra. The presence and uniform distribution of the nanocomposites on the Fabric surface was also confirmed by SEM images and EDX patterns. The electrical resistivity was varied on the raw and modified Polyester Fabric due to the diverse formation of the graphene nanosheets network on the Fabric surface. More Ag particles were formed on the surface of the alkali hydrolyzed Polyester whereas more graphene nanosheets deposited on the aminolyzed Polyester Fabric. Also the hydrolyzed Polyester Fabric exhibited higher antibacterial properties with the lowest silver nitrate in the processing solution. The aminolyzed Fabric showed a lower electrical resistance than the hydrolyzed and raw Fabrics with the same amount of GO in the procedure bath. The aminolyzed Polyester Fabric indicated higher affinity towards GO produced higher antibacterial properties before reduction and without silver nitrate however lower electrical resistance obtained after reduction comparing with other samples.
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electroless plating of silver nanoparticles nanolayer on Polyester Fabric using agno3 naoh and ammonia
Industrial & Engineering Chemistry Research, 2013Co-Authors: Majid Montazer, Vida AllahyarzadehAbstract:A new method of producing conductive Polyester Fabric by using a novel electroless plating of silver nanoparticles on the Fabric is introduced. The Fabric was first treated with silver nitrate and sodium hydroxide at 130 °C for 1 h and then with ammonia at boil for 1 h. This treatment enhanced the Fabric surface activity, created surface roughness, improved nanoparticle absorption, and produced ethylene as a reducing agent. This led to the formation of silver nanoparticles condensed into a nanolayer on the Fabric surface after post-treatment with ammonia. X-ray diffraction patterns confirmed the presence of pure silver metal with a crystal size of 14 nm. Field-emission scanning electron microscopy images and energy-dispersive X-ray patterns also showed the presence of a silver nanolayer comprising silver nanoparticles on the Fabric surface. The Fabric treated under optimized conditions exhibited a low electrical resistivity of around 1.3 Ω/square.
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Free carrier dyeing of Polyester Fabric using nano TiO2
Dyes and Pigments, 2013Co-Authors: Tina Harifi, Majid MontazerAbstract:Abstract The aim of the study was to investigate the effect of nano TiO 2 on the dyeing behavior of Polyester Fabric. The Polyester Fabric was first thermally treated with nano TiO 2 and then dyed with two different disperse dyes at the boil without a carrier. The dyeing efficiency was compared to the common carrier dyeing of the Polyester. The dyeing adsorption of Polyester Fabrics was positively affected by nano TiO 2 pre-treatment and an increase in nano TiO 2 content led to higher color strength. The proposed method proved to have no adverse effects on fastness properties and could be introduced as a novel route, imparting various desirable multi-functional features to Polyester Fabric. This method is also free from some of the disadvantages involved in carrier dyeing such as toxicity.
Tejasvi Potdar - One of the best experts on this subject based on the ideXlab platform.
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A flame retardant, antimicrobial and UV protective Polyester Fabric by solvent crazing route
Journal of Polymer Research, 2019Co-Authors: Ravindra D. Kale, Mohit Soni, Tejasvi PotdarAbstract:The multifunctional finishing effects like flame retardancy, antibacterial activity and UV protection were produced at room temperature in Polyester Fabric using “solvent crazing technique” with ZnCl2 dissolved in acetone. The morphological changes due to incorporation of ZnO on the Fabric was analysed by the SEM-EDX analysis and XPS analysis. The Fabric was investigated for various mechanical and functional properties. Flammability of the functionalized Fabric was investigated by limiting oxygen index (LOI) & vertical burning tests (VBT) whereas thermal behaviour was assessed by TGA-DTG and DSC. LOI up to 29 was achieved and also passed all the requisite standards for VBT for curtain Fabrics. The growth of bacteria on the treated Fabric was negligible. Also, 50 + UPF factor was attained for protection from UV rays. The washing fastness was good and after 10 washing cycles about 60% of the original metal content retained in the fibre.
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Nanocomposite Polyester Fabric based on graphene/titanium dioxide for conducting and UV protection functionality
Graphene Technology, 2018Co-Authors: Ravindra D. Kale, Tejasvi Potdar, Prerana Kane, Rahul SinghAbstract:An efficient process for Fabrication of electroconductive, antistatic, ultraviolet rays protective Polyester Fabric using a graphene/titanium dioxide (graphene/TiO_2) nanocomposite is prepared. Polyester Fabric was treated with graphene oxide (GO) using a simple exhaust method. The GO-treated Polyester Fabric was then immersed in TiCl_3 aqueous solution which acted as reducing agent to yield a Fabric coated with graphene/TiO_2 nanocomposite. The treated Fabric was characterised by X-ray diffraction and Fourier transform infrared spectroscopy. Surface resistivity, volume resistivity, static charge decay time and ultraviolet protection factor of treated Fabric were also assessed. The electrical conductivity of the graphene/TiO_2 nanocomposite-coated Fabrics was improved significantly by the presence of graphene on the surface of Polyester Fabrics. Nanocomposite Fabric also showed excellent mechanical properties and hydrophobicity. It also exhibited protection from UV radiations as shown by higher UPF due to the presence of titanium on the Fabric surface.
Ravindra D. Kale - One of the best experts on this subject based on the ideXlab platform.
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A flame retardant, antimicrobial and UV protective Polyester Fabric by solvent crazing route
Journal of Polymer Research, 2019Co-Authors: Ravindra D. Kale, Mohit Soni, Tejasvi PotdarAbstract:The multifunctional finishing effects like flame retardancy, antibacterial activity and UV protection were produced at room temperature in Polyester Fabric using “solvent crazing technique” with ZnCl2 dissolved in acetone. The morphological changes due to incorporation of ZnO on the Fabric was analysed by the SEM-EDX analysis and XPS analysis. The Fabric was investigated for various mechanical and functional properties. Flammability of the functionalized Fabric was investigated by limiting oxygen index (LOI) & vertical burning tests (VBT) whereas thermal behaviour was assessed by TGA-DTG and DSC. LOI up to 29 was achieved and also passed all the requisite standards for VBT for curtain Fabrics. The growth of bacteria on the treated Fabric was negligible. Also, 50 + UPF factor was attained for protection from UV rays. The washing fastness was good and after 10 washing cycles about 60% of the original metal content retained in the fibre.
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Nanocomposite Polyester Fabric based on graphene/titanium dioxide for conducting and UV protection functionality
Graphene Technology, 2018Co-Authors: Ravindra D. Kale, Tejasvi Potdar, Prerana Kane, Rahul SinghAbstract:An efficient process for Fabrication of electroconductive, antistatic, ultraviolet rays protective Polyester Fabric using a graphene/titanium dioxide (graphene/TiO_2) nanocomposite is prepared. Polyester Fabric was treated with graphene oxide (GO) using a simple exhaust method. The GO-treated Polyester Fabric was then immersed in TiCl_3 aqueous solution which acted as reducing agent to yield a Fabric coated with graphene/TiO_2 nanocomposite. The treated Fabric was characterised by X-ray diffraction and Fourier transform infrared spectroscopy. Surface resistivity, volume resistivity, static charge decay time and ultraviolet protection factor of treated Fabric were also assessed. The electrical conductivity of the graphene/TiO_2 nanocomposite-coated Fabrics was improved significantly by the presence of graphene on the surface of Polyester Fabrics. Nanocomposite Fabric also showed excellent mechanical properties and hydrophobicity. It also exhibited protection from UV radiations as shown by higher UPF due to the presence of titanium on the Fabric surface.
Ali Bashiri Rezaie - One of the best experts on this subject based on the ideXlab platform.
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photo and biocatalytic activities along with uv protection properties on Polyester Fabric through green in situ synthesis of cauliflower like cuo nanoparticles
Journal of Photochemistry and Photobiology B-biology, 2017Co-Authors: Ali Bashiri Rezaie, Majid MontazerAbstract:Abstract In this paper, a facile environmentally friendly method is introduced for in-situ synthesis and Fabrication of cauliflower-like CuO nanoparticles on the Polyester Fabric to produce photo and biocatalytic activities with UV protection properties on Polyester Fabric. The ash of burnt leaves and stems of Seidlitzia rosmarinus plant called Keliab was used as a natural and nontoxic alkaline source for simultaneous synthesis of CuO nanoparticles and surface modification of Polyester without using any other compounds. The images of field-emission scanning electron microscopy, patterns of energy-dispersive spectroscopy, UV–visible spectrum and X-ray diffraction confirmed successful synthesis and loading of CuO nanoparticles on the Polyester Fabric. The treated Fabrics showed very good antibacterial activities toward two pathogen bacteria including Staphylococcus aureus as a Gram-positive and Escherichia coli as a Gram-negative bacteria with no adverse effects on human dermal fibroblasts based on MTT test. The treated Fabrics confirmed significant photocatalytic activity for degradation of methylene blue under sunlight, self-cleaning properties under UV light and also UV protection properties. Further a colorant effect along with an improvement in the wettability and mechanical properties of the treated Fabrics were indicated. Overall, this method can be applied as a clean route for producing photo and bio active textiles protecting against UV irradiation.
Ronghui Guo - One of the best experts on this subject based on the ideXlab platform.
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Preparation and photocatalytic activity of bismuth tungstate coated Polyester Fabric
Fibers and Polymers, 2017Co-Authors: Ronghui Guo, Jianwu Lan, Shouxiang Jiang, Cheng Cheng, Ludan Zhao, Linghui PengAbstract:Bi2WO6 particles were prepared and then coated on the Polyester Fabric. Surface morphology, crystal structure, and chemical structure of the Bi2WO6 particle coated Polyester Fabric were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Photocatalytic activity was evaluated by the degradation of methylene blue (MB) under ultraviolet light irradiation. Influences of the different concentrations of Bi2WO6 on the deposit weight and the photocatalytic activity of the Bi2WO6 particle coated Polyester Fabric were investigated. In addition, UV protection of the Bi2WO6 particle coated Polyester Fabric was examined. The results show that Bi2WO6 particles are uniformly coated on the surface of the Polyester Fabric. The Bi2WO6 particles coated on the Polyester Fabric are irregular and are orthorhombic. In addition, the Bi2WO6 particle coated Polyester Fabric exhibits excellent photocatalytic activity and UV protection. The average degradation efficiency of MB in the presence of the Bi2WO6 particle on the Polyester Fabric coated with 10 g/l Bi2WO6 reaches 98.6 % after being illuminated for 7 h. Therefore, the Bi2WO6 particle coated Polyester Fabric shows excellent photocatalytic stability for dyes degradation.
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Microstructure and properties of Ni-Fe3O4 composite plated Polyester Fabric
Fibers and Polymers, 2013Co-Authors: Jianwu Lan, Ronghui Guo, Min Huang, Kun Shi, Dan ShangAbstract:In this study, electroless Ni-Fe3O4 composite plating on Polyester Fabric modified with 3-aminopropyltrimethoxysilane (APTMS) was investigated under ultrasonic irradiation. Effects of deposit weight on microstructure and properties of Ni-Fe3O4 composite coating were studied. Surface morphology, chemical composition and state, crystal structure of the electroless Ni-Fe3O4 composite plated Polyester Fabric were characterized by SEM, EDX, XPS and XRD. Magnetic properties, electrical resistivity and electromagnetic interference (EMI) shielding effectiveness (SE) of Ni-Fe3O4 plated Polyester Fabric were also evaluated. The presence of co-deposition of Fe3O4 in Ni coating on the Polyester Fabric is demonstrated by an XPS analysis. At a higher deposit weight, there is an increase in particle size and saturation magnetization, and a decrease in electrical resistivity with respect to the rise of deposit weight, respectively. As the Ni-Fe3O4 weight on the treated Fabric is 32.90 g/m2, the EMI SE of the Ni-Fe3O4 plated Polyester Fabric arrives 15–20 dB at frequencies that range from 8 to 18 GHz. The results indicate the Ni-Fe3O4 plated Polyester Fabrics are used as super-paramagnetic, conductive and EMI shielding materials.
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electromagnetic shielding and corrosion resistance of electroless ni p cu ni multilayer plated Polyester Fabric
Surface & Coatings Technology, 2011Co-Authors: Shouxiang Jiang, Ronghui GuoAbstract:Abstract Nickel–phosphorus/copper–nickel (Ni–P/Cu–Ni) multilayers are electroless deposited onto Polyester Fabric as a function of the deposition time of Ni–P and compared with Ni–P and Cu–Ni deposits. Their surface morphology, microstructure and composition are analyzed by using scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive X-ray (EDX). Their electromagnetic interference (EMI) shielding effectiveness (SE) is evaluated and corrosion resistance is characterized by electrochemical polarization measurements. The results show that with the same weight of the deposits, the EMI SE of the Ni–P/Cu–Ni plated Fabric is higher than that of the Ni–P plated Fabric, while the corrosion resistance of the Ni–P/Cu–Ni plated Fabrics is better than the Cu–Ni plated Fabrics. Ni–P improves corrosion resistance and greatly enhances the electromagnetic shielding property of Ni–P/Cu–Ni deposits. Furthermore, the EMI SE and corrosion resistance of the Ni–P/Cu–Ni deposits increase with the rise of deposition time of Ni–P. Therefore, electroless Ni–P/Cu–Ni plated Fabric is the most appropriate material that will meet the requirements of both corrosion resistance and EMI SE in most textile applications.
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Influence of nickel ions for electroless Ni–P plating on Polyester Fabric
Journal of Coatings Technology and Research, 2009Co-Authors: Ronghui Guo, S. Q. Jiang, Cwm Yuen, G. H. ZhengAbstract:Properties of electroless Ni–P plated Polyester Fabric mainly depend on the plating bath constituents/conditions. The effects of NiSO4 concentration of the plating bath on the deposition rate, phosphorus content, surface morphology, and crystal structure of the electroless Ni–P plated Polyester Fabric were investigated. The study revealed that phosphorus content in the deposits decreased at higher NiSO4 concentration. SEM micrographs showed that nodule size of the Ni–P deposits increased. All the Ni–P deposits had an amorphous structure. The electromagnetic interference (EMI) shielding effectiveness (SE) of electroless Ni–P plated Polyester Fabric was evaluated. With the rise of nickel ion in the solution, the EMI SE of the Ni–P plated Polyester Fabric increased.
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Effect of Polyester Fabric through electroless Ni-P plating
Fibers and Polymers, 2008Co-Authors: S. Q. Jiang, Ronghui GuoAbstract:Process for electroless nickel-phosphorous (Ni-P) plating has been investigated as a metallizing treatment technology on Polyester Fabric. The microstructure and mechanical performance of Ni-P-plated Polyester Fabric are investigated in this study. Surface modifications of Ni-P-plated Polyester fiber were studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The changes in weight and thickness of the Ni-P-plated Polyester Fabric were determined through direct measurements. Systematic investigations, including bending rigidity, tearing strength, tensile strength, elongation at break, air permeability, wettability and absorbency, and anti-static property were conducted on untreated and metallized Polyester Fabrics. A thorough discussion and quantitative report were made on the specific performance of the Ni-P-plated Polyester Fabric.