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Preparation of a graphene-loaded carbon nanofiber composite with enhanced graphitization and conductivity for biosensing applications

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RSC Advances 2015年第39期5卷 30602-30609页

作者： Li, Dawei Li, Guohui Lv, Pengfei Ullah, Naseeb Wang, Cheng Wang, Qingqing Zhang, Xiangwu Wei, Qufu Key Laboratory of Eco-Textiles Ministry of Education Jiangnan University Wuxi Jiangsu214122 China Fiber and Polymer Science Program Department of Textile EngineeringChemistry and Science North Carolina State University RaleighNC27695-8301 United States

A combined method of electrostatic adsorption and green reduction was successfully employed to synthesize graphene-loaded carbon nanofibers (G/CNFs). The graphene nanoflakes enhanced the degree of graphitization of CNFs. A mixture containing laccase (Lac), G/CNFs and Nafion was used to fabricate a novel biosensor. The G/CNFs facilitated the direct electron transfer between Lac and the modified electrode. A pair of apparently enhanced redox peaks was observed on the modified electrode. The biosensor was investigated using square wave voltammetry, and the biosensor displayed highly efficient electrocatalysis towards catechol with a detection limit of 20 nM (S/N = 3), a sensitivity of 13.5 μA μM-1, and a linear range from 1 × 10-7 to 2.86 × 10-6 M. Moreover, this new biosensor also showed good stability and selectivity, and was employed in measuring catechol concentration in a real water environment successfully. © 2015 The Royal Society of Chemistry.

关键词： Carbon nanofibers

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Preparing binder-free electrodes for electric double-layer capacitors via a novel centrifugal spinning approach

Preparing binder-free electrodes for electric double-layer c...

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fiber Society 2015 Fall Meeting and Technical Conference - fibers: Where Tradition Meets Innovation

作者： Lu, Yao Chen, Chen Zhang, Xiangwu Fiber and Polymer Science Program Department of Textiles Engineering Chemistry and Science North Carolina State University RaleighNC27695-8301 United States

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The effects of QAC-silane antimicrobial agents on the physical, mechanical, and thermophysiological properties of novel elastomeric fabrics for burn pressure garments

The effects of QAC-silane antimicrobial agents on the physic...

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fiber Society 2015 Fall Meeting and Technical Conference - fibers: Where Tradition Meets Innovation

作者： Varan, Nilufer Y. Caydamli, Yavuz Hudson, Sam M. Spontak, Richard J. Tonelli, Alan E. Engineering Faculty Department of Textile Engineering Pamukkale University Kinikli Kampusu Denizli20017 Turkey Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University College of Textiles Campus Box 8301 RaleighNC27695 United States Department of Chemical and Biomolecular Engineering North Carolina State University Engineering Building I Campus Box 7905 RaleighNC27695 United States

In this study, novel nylon/spandex elastomeric burn pressure garments were developed with a durable antimicrobial performance using silane and quaternary ammonium compounds (QAC's). A series of physical, mechanical and thermophysiological properties were tested before and after the application of the antimicrobial finish, including air permeability, stiffness, drapeability, bursting strength and extensibility, thermal resistance (Rct) and thermal insulation (in clo units). Antimicrobial tests were performed after 50 washing cycles using AATCC 100 Test Method, and they showed a 99% reduction in bacterial activity for those fabrics treated with the QAC-Silane antimicrobial agents. Physical, mechanical and thermophysiological properties were tested after antimicrobial treatments. A small significant increase was observed in terms of thermal resistance (Rct) (Tog) and isolation (It) (clo) properties for treated fabrics samples. The air permeability, bursting strength and drapeability showed a small significant decrease after antimicrobial finishing, while the elastomeric fabric showed a small but significant increase for fabric stiffness. These results confirm that when these novel pressure garments are used by burn patients, they will not only decrease the incidence of infection but will also provide comfort during prolonged use.

关键词： Antimicrobial agents

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Nanofiber-Based Membrane Separators for Lithium-ion Batteries

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MRS Online Proceedings Library (OPL) 2015年第1期1718卷 157-161页

作者： Mataz Alcoutlabi Hun Lee Xiangwu Zhang Department of Mechanical Engineering University of Texas-Pan American Edinburg TX 78539 USA. Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University Raleigh NC 27695-8301 USA

Nanofiber-based membranes were prepared by two different methods for use as separators for Lithium-ion batteries (LIBs). In the first method, Electrospinning was used for the fabrication of Polyvinylidene fluoride PVDF nanofiber coatings on polyolefin microporous membrane separators to improve their electrolyte uptake and electrochemical performance. The nanofiber-coated membrane separators show better electrolyte uptake and ionic conductivity than that for the uncoated membranes. In the second method, Forcespinning® (FS) was used to fabricate fibrous cellulose membranes as separators for LIBs. The cellulose fibrous membranes were made by the Forcespinning® of a cellulose acetate solution precursor followed by a subsequent alkaline hydrolysis treatment. The results show that the fibrous cellulose membrane-based separator exhibits high electrolyte uptake and good electrolyte/electrode wettability and therefore can be a good candidate for high performance and high safety LIB separators.

关键词： polymer energy storage nanostructure

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The electro-responsive characteristics of graphene oxide/polymer composites

The electro-responsive characteristics of graphene oxide/pol...

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7th International Symposium on engineering Plastics

作者： Wen Ling Zhang Jingquan Liu Hyoung Jin Choi College of Chemical Science and Engineering Laboratory of Fiber Materials and Modern TextileThe Growing Base for State Key LaboratoryQingdao University Department of Polymer Science and Engineering Inha University

Graphene,a two-dimensional single-layer of graphite,has attracted significant interests as one of the most attractive and potential materials in recent years due to its tremendously large surface area and remarkable h... 详细信息

关键词： The electro-responsive characteristics of graphene oxide/polymer composites

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Correction: An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds

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RSC Advances 2017年第27期7卷 16737-16737页

作者： Guohui Li Avinav G. Nandgaonkar Youssef Habibi Wendy E. Krause Qufu Wei Lucian A. Lucia Key Laboratory of Eco-Textiles Ministry of Education Jiangnan University 1800 Lihu Avenue Wuxi 214122 Jiangsu Province P. R. China Key Laboratory of Pulp and Paper Science & Technology College of Light Chemical & Environmental Engineering Qilu University of Technology Jinan P. R. China Department of Materials Research and Technology (MRT) Luxembourg Institute of Science and Technology (LIST) 5 Avenue des Hauts-Fourneaux L-4362 Esch-sur-Alzette Luxembourg Fiber and Polymer Science Program North Carolina State University 2401 Research Dr Campus Box 8301 Raleigh NC 27695-8301 USA

Correction for ‘An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds’ by Guohui Li et al., RSC Adv., 2017, 7, 13678–13688.

Correction for ‘An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds’ by Guohui Li et al., RSC Adv., 2017, 7, 13678–13688.

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Advanced energy storage nanofibers by Centrifugal spinning

Advanced energy storage nanofibers by Centrifugal spinning

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fiber Society 2014 Fall Meeting and Technical Conference: fibers for the Future

作者： Lu, Yao Zhang, Xiangwu Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University RaleighNC27695-8301 United States

Centrifugal spinning is a simple and versatile technique for producing nanofibers from various materials. One major application of centrifugal spinning is to produce advanced functional nanofibers for energy storage. Among the various existing energy storage technologies, rechargeable lithium-ion batteries have been considered as effective solution to the increasing need for highenergy density electrochemical power sources. Novel centrifugally-spun nanofibers with functional properties can dramatically alter surface reaction rates and charge transport throughout the batteries, causing significant improvement in energy storage efficiency. Here, we present our work on the development of advanced functional nanofibers and the integration of these materials into rechargeable lithium-ion batteries to achieve high system performance.

关键词： Nanofibers

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Development of Epoxy/BN Composites with High Thermal Conductivity for Metal-Core Printed Circuit Board(MCPCB)

Development of Epoxy/BN Composites with High Thermal Conduct...

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2015 International Conference on Intelligent Materials and Manufacturing engineering (IMME 2015)

作者： Jae Hyun Choi Bong Goo Choi Min A Lee Jae-Sik Na Laboratory of Fiber Application and Manufacturing Department of Fiber and Composite MaterialsFeng Chia University School of Chinese Medicine “China Medical University” Department of Fashion Design Asia University Department of Ph.D Program in Civil and Hydraulic Engineering Feng Chia University Department of Land Management Feng Chia University The Department of Textile Engineering “Chinese Culture University” Institute of Biomedical Engineering and Materials Science “Central Taiwan University of Science and Technology”

The epoxy composites with high thermal conductivity for metal-core printed circuit board(MCPCB) can be prepared by varnish coating and a hot press method. Alumina filler of plate-like shape was used as primary micro-filler, while plate-like alumina filler, h-BN, a-BN and s-BN filler were used for blending into the plate-like alumina filler as the secondary filler. Results showed that the secondary fillers a-BN and s-BN loaded epoxy composites have higher thermal conductivity than alumina filler single-loaded composites. Also, BN filler has high thermal conductivity, but h-BN filled epoxy composite has lower thermal conductivity than alumina filled epoxy composite. The decrease of voids in epoxy composite are very important, and the filler shape and surface modification is also necessary to achieve high thermal conductivity in epoxy composite for MCPCB

关键词： MCPCB Epoxy composite Boron nitride Thermal conductivity Thermal diffusivity

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Physical Properties of Geotextiles Reinforced by Recycled Kevlar Selvages

Physical Properties of Geotextiles Reinforced by Recycled Ke...

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2015 International Conference on Intelligent Materials and Manufacturing engineering (IMME 2015)

作者： Hee Jung Moon Bong Soo Lee Seung Hyun Cho Laboratory of Fiber Application and Manufacturing Department of Fiber and Composite MaterialsFeng Chia University School of Chinese Medicine "China Medical University" Department of Fashion Design Asia University Department of Ph.D Program in Civil and Hydraulic Engineering Feng Chia University Department of Land Management Feng Chia University The Department of Textile Engineering "Chinese Culture University" Institute of Biomedical Engineering and Materials Science "Central Taiwan University of Science and Technology"

Kevlar fiber are artifical fibers that have been globally commonly used due to their attributes of a high modulus, a low elongation, an impact resistance, a chemical resistance, and thermostability. Therefore, this study proposes nonwoven geotextiles by corporating with recycled Kevlar unidirectoinal selvage with a low production cost, crimped polyester(PET) fibers, and low-melting-point PET(LPET) fibers. The content of LPET fiber is specified as 20 wt%, while the content of Kevlar fiber varies as 0 wt%, 5 wt%, 10 wt%, 15 wt%, and 20 wt%. The optimal tear strength of 195 N occurs with a content of Kevlar fiber being 20 wt%.

关键词： Recycled Kevlar fiber Low-melting-point polyester(PET) fiber Nonwoven Geotextile

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Macromol. Rapid Commun. 22/2016

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Macromolecular Rapid Communications 2016年第22期37卷

作者： Syamal S. Tallury Behnam Pourdeyhimi Melissa A. Pasquinelli Richard J. Spontak Fiber & Polymer Science Program North Carolina State University Raleigh NC 27695 USA Department of Materials Science & Engineering North Carolina State University Raleigh NC 27695 USA The Nonwovens Institute North Carolina State University Raleigh NC 27695 USA Department of Chemical & Biomolecular Engineering North Carolina State University Raleigh NC 27695 USA

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