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Altangerel Amarjargal - One of the best experts on this subject based on the ideXlab platform.
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incorporation of silver loaded zno rods into electrospun nylon 6 spider web like Nanofibrous Mat using hydrothermal process
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2013Co-Authors: Hem Raj Pant, Altangerel AmarjargalAbstract:Abstract Silver-doped zinc oxide rods were incorporated in a nylon-6 electrospun Mat by a facile hydrothermal process. The rods exhibited excellent characteristics as a durable filter media with good antibacterial properties. ZnO nano-seeds blended with a nylon-6 solution were typically able to form ZnO-NPs-embedded spider-web-like nanonets during electrospinning. The simultaneous crystal growth of Ag NPs and ZnO rods from their precursor solutions on the surface of as-fabricated electrospun ZnO/nylon-6 fibers was carried out via a hydrothermal process. FE-SEM, TEM, UV–visible spectra, and photoluminescence spectra not only confirmed the forMation of ZnO-nano-seeds-loaded electrospun nylon-6 composite fibers but also showed that ZnO rods doped with Ag NPs (approxiMately 50 nm in size) were grown on the surface of the nylon-6 composite fibers during hydrothermal treatment. The antibacterial properties of different Mats were tested against Escherichia coli. The as-synthesized Ag-NP-loaded nanocomposite revealed better antibacterial properties than those of composite Mat without Ag NPs. The excellent stability of Ag-loaded ZnO rods (caused by ZnO nano-seeds) on the surface of electrospun fibers provides a new dimension in the fabrication of inorganic/organic nanocomposite.
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two nozzle electrospinning of mwnt pu pu Nanofibrous composite Mat with improved mechanical and thermal properties
Current Applied Physics, 2013Co-Authors: Hem Raj Pant, Altangerel Amarjargal, Leonard D. Tijing, Chan Hee Park, Woorim Choi, Zhe Jiang, Iktae ImAbstract:Abstract Composite Nanofibrous Mat composed of neat polyurethane (PU) and multiwalled carbon nanotubes/polyurethane (MWNT/PU) nanofibers have been fabricated by one-step angled two-nozzle electrospinning. The morphological, thermal, and mechanical properties of the electrospun nanofibers were evaluated. The diameters of electrospun neat PU and composite nanofibers ranged from 239 to 1058 nm. The two-nozzle electrospun (MWNT/PU)/PU composite nanofibers showed curly, and randomly-oriented fibers with interfiber bonding, and were generally bigger in size than single-nozzle electrospun nanofibers. The tensile strength of the neat PU composite nanofiber Mat obtained from two-nozzle electrospinning was 25% higher than that obtained from neat PU single-nozzle electrospinning. The incorporation of MWNTs in the composite nanofiber increased the tensile strength by as much as 64% without reducing elongation, made the composite nanofiber more thermally stable, and improved the melting zone. The present results showed that side-by-side angled two-nozzle electrospinning can improve the quality of the electrospun nanofibers that could have potential application in different fields such as filtration, protective clothing and tissue engineering.
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one step fabrication of antibacterial silver nanoparticles poly ethylene oxide polyurethane bicomponent hybrid Nanofibrous Mat by dual spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee ParkAbstract:Abstract The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) – in situ – decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity.
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One-step fabrication of antibacterial (silver nanoparticles/poly(ethylene oxide)) - Polyurethane bicomponent hybrid Nanofibrous Mat by dual-spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee Park, Cheol Sang KimAbstract:The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) - in situ - decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity. © 2012 Elsevier B.V. All rights reserved.
Hem Raj Pant - One of the best experts on this subject based on the ideXlab platform.
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incorporation of silver loaded zno rods into electrospun nylon 6 spider web like Nanofibrous Mat using hydrothermal process
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2013Co-Authors: Hem Raj Pant, Altangerel AmarjargalAbstract:Abstract Silver-doped zinc oxide rods were incorporated in a nylon-6 electrospun Mat by a facile hydrothermal process. The rods exhibited excellent characteristics as a durable filter media with good antibacterial properties. ZnO nano-seeds blended with a nylon-6 solution were typically able to form ZnO-NPs-embedded spider-web-like nanonets during electrospinning. The simultaneous crystal growth of Ag NPs and ZnO rods from their precursor solutions on the surface of as-fabricated electrospun ZnO/nylon-6 fibers was carried out via a hydrothermal process. FE-SEM, TEM, UV–visible spectra, and photoluminescence spectra not only confirmed the forMation of ZnO-nano-seeds-loaded electrospun nylon-6 composite fibers but also showed that ZnO rods doped with Ag NPs (approxiMately 50 nm in size) were grown on the surface of the nylon-6 composite fibers during hydrothermal treatment. The antibacterial properties of different Mats were tested against Escherichia coli. The as-synthesized Ag-NP-loaded nanocomposite revealed better antibacterial properties than those of composite Mat without Ag NPs. The excellent stability of Ag-loaded ZnO rods (caused by ZnO nano-seeds) on the surface of electrospun fibers provides a new dimension in the fabrication of inorganic/organic nanocomposite.
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two nozzle electrospinning of mwnt pu pu Nanofibrous composite Mat with improved mechanical and thermal properties
Current Applied Physics, 2013Co-Authors: Hem Raj Pant, Altangerel Amarjargal, Leonard D. Tijing, Chan Hee Park, Woorim Choi, Zhe Jiang, Iktae ImAbstract:Abstract Composite Nanofibrous Mat composed of neat polyurethane (PU) and multiwalled carbon nanotubes/polyurethane (MWNT/PU) nanofibers have been fabricated by one-step angled two-nozzle electrospinning. The morphological, thermal, and mechanical properties of the electrospun nanofibers were evaluated. The diameters of electrospun neat PU and composite nanofibers ranged from 239 to 1058 nm. The two-nozzle electrospun (MWNT/PU)/PU composite nanofibers showed curly, and randomly-oriented fibers with interfiber bonding, and were generally bigger in size than single-nozzle electrospun nanofibers. The tensile strength of the neat PU composite nanofiber Mat obtained from two-nozzle electrospinning was 25% higher than that obtained from neat PU single-nozzle electrospinning. The incorporation of MWNTs in the composite nanofiber increased the tensile strength by as much as 64% without reducing elongation, made the composite nanofiber more thermally stable, and improved the melting zone. The present results showed that side-by-side angled two-nozzle electrospinning can improve the quality of the electrospun nanofibers that could have potential application in different fields such as filtration, protective clothing and tissue engineering.
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one step fabrication of antibacterial silver nanoparticles poly ethylene oxide polyurethane bicomponent hybrid Nanofibrous Mat by dual spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee ParkAbstract:Abstract The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) – in situ – decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity.
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One-step fabrication of antibacterial (silver nanoparticles/poly(ethylene oxide)) - Polyurethane bicomponent hybrid Nanofibrous Mat by dual-spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee Park, Cheol Sang KimAbstract:The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) - in situ - decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity. © 2012 Elsevier B.V. All rights reserved.
Lifeng Zhang - One of the best experts on this subject based on the ideXlab platform.
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polyacrylonitrile Nanofibrous Mat from electrospinning born with potential anti fungal functionality
European Polymer Journal, 2019Co-Authors: Nafisa Sirelkhatim, Arifa Parveen, Dennis R Lajeunesse, Demei Yu, Lifeng ZhangAbstract:Abstract Electrospun nanofibers have been found in many applications such as air/water filtration, performance apparel, drug delivery, and scaffold for tissue engineering and started to be integrated in commercial products, which leads to their exposure to environment. Electrospun Nanofibrous Material is a relatively new Material to microorganism in nature and little is known about the biological implication of interactions between electrospun Nanofibrous Mats and cellular fungal cells. Herein the interaction between electrospun polyacrylonitrile (ESPAN) Nanofibrous Mat and representative non-pathogenic/pathogenic cellular yeasts (Saccharomyces cerevisiae and Candida albicans) was investigated. It is demonstrated for the first time that when these cellular yeasts, species of the kingdom fungi, were exposed to ESPAN Nanofibrous Mat, they exhibited lower growth rate, radical change to morphology, and reduced viability without presence of any chemical antifungal agent. These responses were distinct from the cellular interactions with other forms of PAN Materials (e.g. solid film or microfibrous Mat). Exploration of mechanism indicated that the interaction between yeast cell and electrospun Nanofibrous Mat is a complex phenomenon in which both Nanofibrous morphology and fiber surface composition/property play significant roles. The inherent anti-yeast and potential anti-fungal functionality of ESPAN Nanofibrous Mat may make an immediate impact on environmental microorganism and could also benefit the next-generation Material design to control microbial growth through solely physical contact.
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a form stable phase change Material made with a cellulose acetate Nanofibrous Mat from bicomponent electrospinning and incorporated capric myristic stearic acid ternary eutectic mixture for thermal energy storage retrieval
RSC Advances, 2015Co-Authors: Xiaofei Song, Jin Zhang, Lifeng ZhangAbstract:An innovative type of form-stable phase change Material (PCM) was prepared by incorporating a capric–myristic–stearic acid (CMS) ternary eutectic mixture with a cellulose acetate (CA) Nanofibrous Mat that was derived from electrospinning a binary mixture of CA/polyvinylpyrrolidone (PVP) and subsequent selective dissolution of PVP component from the obtained bicomponent Nanofibrous Mat. PVP removal from the CA/PVP bicomponent nanofibers created nanoporous features on the resultant CA nanofiber surface and increased CMS incorporation capability of the Nanofibrous Mat. Morphology, thermal behavior and durability, and thermal energy storage/retrieval capacity of the prepared CMS/CA Nanofibrous form-stable PCM were investigated. This form-stable PCM could maintain well the PCM characteristics even after multiple thermal cycle uses and demonstrated great thermal storage/retrieval capability and temperature regulation ability.
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A form-stable phase change Material made with a cellulose acetate Nanofibrous Mat from bicomponent electrospinning and incorporated capric–myristic–stearic acid ternary eutectic mixture for thermal energy storage/retrieval
RSC Adv., 2015Co-Authors: Yibing Cai, Mengmeng Liu, Qufu Wei, Xiaofei Song, Jin Zhang, Lifeng ZhangAbstract:? 2015 The Royal Society of Chemistry.An innovative type of form-stable phase change Material (PCM) was prepared by incorporating a capric-myristic-stearic acid (CMS) ternary eutectic mixture with a cellulose acetate (CA) Nanofibrous Mat that was derived from electrospinning a binary mixture of CA/polyvinylpyrrolidone (PVP) and subsequent selective dissolution of PVP component from the obtained bicomponent Nanofibrous Mat. PVP removal from the CA/PVP bicomponent nanofibers created nanoporous features on the resultant CA nanofiber surface and increased CMS incorporation capability of the Nanofibrous Mat. Morphology, thermal behavior and durability, and thermal energy storage/retrieval capacity of the prepared CMS/CA Nanofibrous form-stable PCM were investigated. This form-stable PCM could maintain well the PCM characteristics even after multiple thermal cycle uses and demonstrated great thermal storage/retrieval capability and temperature regulation ability.
Leonard D. Tijing - One of the best experts on this subject based on the ideXlab platform.
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two nozzle electrospinning of mwnt pu pu Nanofibrous composite Mat with improved mechanical and thermal properties
Current Applied Physics, 2013Co-Authors: Hem Raj Pant, Altangerel Amarjargal, Leonard D. Tijing, Chan Hee Park, Woorim Choi, Zhe Jiang, Iktae ImAbstract:Abstract Composite Nanofibrous Mat composed of neat polyurethane (PU) and multiwalled carbon nanotubes/polyurethane (MWNT/PU) nanofibers have been fabricated by one-step angled two-nozzle electrospinning. The morphological, thermal, and mechanical properties of the electrospun nanofibers were evaluated. The diameters of electrospun neat PU and composite nanofibers ranged from 239 to 1058 nm. The two-nozzle electrospun (MWNT/PU)/PU composite nanofibers showed curly, and randomly-oriented fibers with interfiber bonding, and were generally bigger in size than single-nozzle electrospun nanofibers. The tensile strength of the neat PU composite nanofiber Mat obtained from two-nozzle electrospinning was 25% higher than that obtained from neat PU single-nozzle electrospinning. The incorporation of MWNTs in the composite nanofiber increased the tensile strength by as much as 64% without reducing elongation, made the composite nanofiber more thermally stable, and improved the melting zone. The present results showed that side-by-side angled two-nozzle electrospinning can improve the quality of the electrospun nanofibers that could have potential application in different fields such as filtration, protective clothing and tissue engineering.
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one step fabrication of antibacterial silver nanoparticles poly ethylene oxide polyurethane bicomponent hybrid Nanofibrous Mat by dual spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee ParkAbstract:Abstract The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) – in situ – decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity.
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One-step fabrication of antibacterial (silver nanoparticles/poly(ethylene oxide)) - Polyurethane bicomponent hybrid Nanofibrous Mat by dual-spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee Park, Cheol Sang KimAbstract:The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) - in situ - decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity. © 2012 Elsevier B.V. All rights reserved.
Chan Hee Park - One of the best experts on this subject based on the ideXlab platform.
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antimicrobial electrospun Nanofibrous Mat based on essential oils for biomedical applications
Journal of Nanoscience and Nanotechnology, 2020Co-Authors: Deockhee Yoon, Abdelrahman I Rezk, Chan Hee ParkAbstract:: Polyurethane (PU) nanofibers containing three different essential oils (teatree, cinnamon bark, clove) were produced by electrospinning method. Morphology of the electrospun Nanofibrous was studied using Field Emission Scanning Electron Microscope (FE-SEM). We were studying to reveal that different concentration of essential oil display different mechanical properties for the Nanofibrous Mat. The antibacterial properties of the Nanofibrous loaded with the essential oil were studied quantitatively and qualitatively using three strains (Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa). The antibacterial evaluation showed higher antibacterial activity for Nanofibrous loaded with essential oil compares to control sample. In vitro cell culture were proceed to confirm biocompatibility of the Nanofibrous contained essential oils. In this study, we present a comparison of the samples for each of the experiment based on the derived test items and test methods. The results of this study demonstrate that the proposed Nanofibrous Mat loaded with essential oil will be a promising future Material for different biomedical applications.
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two nozzle electrospinning of mwnt pu pu Nanofibrous composite Mat with improved mechanical and thermal properties
Current Applied Physics, 2013Co-Authors: Hem Raj Pant, Altangerel Amarjargal, Leonard D. Tijing, Chan Hee Park, Woorim Choi, Zhe Jiang, Iktae ImAbstract:Abstract Composite Nanofibrous Mat composed of neat polyurethane (PU) and multiwalled carbon nanotubes/polyurethane (MWNT/PU) nanofibers have been fabricated by one-step angled two-nozzle electrospinning. The morphological, thermal, and mechanical properties of the electrospun nanofibers were evaluated. The diameters of electrospun neat PU and composite nanofibers ranged from 239 to 1058 nm. The two-nozzle electrospun (MWNT/PU)/PU composite nanofibers showed curly, and randomly-oriented fibers with interfiber bonding, and were generally bigger in size than single-nozzle electrospun nanofibers. The tensile strength of the neat PU composite nanofiber Mat obtained from two-nozzle electrospinning was 25% higher than that obtained from neat PU single-nozzle electrospinning. The incorporation of MWNTs in the composite nanofiber increased the tensile strength by as much as 64% without reducing elongation, made the composite nanofiber more thermally stable, and improved the melting zone. The present results showed that side-by-side angled two-nozzle electrospinning can improve the quality of the electrospun nanofibers that could have potential application in different fields such as filtration, protective clothing and tissue engineering.
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one step fabrication of antibacterial silver nanoparticles poly ethylene oxide polyurethane bicomponent hybrid Nanofibrous Mat by dual spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee ParkAbstract:Abstract The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) – in situ – decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity.
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One-step fabrication of antibacterial (silver nanoparticles/poly(ethylene oxide)) - Polyurethane bicomponent hybrid Nanofibrous Mat by dual-spinneret electrospinning
Materials Chemistry and Physics, 2012Co-Authors: Leonard D. Tijing, Michael Tom G. Ruelo, Hem Raj Pant, Altangerel Amarjargal, Chan Hee Park, Cheol Sang KimAbstract:The one-step electrospinning fabrication of novel Materials with added functionalities is being widely studied because of their wide array of applications. Here, the fabrication of a hybrid, bimodal Nanofibrous Mat made of two polymeric nanofibers: polyurethane (PU) and silver (Ag) nanoparticle (NP) - in situ - decorated poly(ethylene oxide) (PEO) utilizing an angled dual-spinneret electrospinning system is reported. Silver nitrate (AgNO 3 ) is in-situ reduced in high-molecular weight PEO, and Ag NPs with sizes from 6 to 90 nm as checked by scanning electron microscoy and transmission electron microscopy, are subsequently formed on the surface of PEO nanofibers depending on the reduction time. Successful fabrication of bicomponent polymer Matrices (PU and PEO) in the hybrid Mat is confirmed by Fourier transform infrared spectroscopy. Metallic Ag NPs are verified to be present in the hybrid Mats by energy dispersive X-ray spectroscopy and ultraviolet-vis spectroscopy, showing plasmon resonance band peaks at 415 and 425 nm. The hybrid Nanofibrous Mat containing Ag NPs with an average size of 8 nm (i.e., reduction time of 3 h) exhibits strong antibacterial activity. © 2012 Elsevier B.V. All rights reserved.
