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Dense carbon nanofiber self-supporting electrode fabricated by orientation/compaction strategy for high volumetric lithium storage capacity

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Progress in Natural Science:Materials International 2025年第1期35卷 229-237页

作者： Haihui Liu Chaoqun Chen Qiang Xu Yan Song Xiangwu Zhang Chang Ma Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology Tiangong University CAS Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University

Low bulk density greatly restricts the large-scale application of electrospun carbon-based fiber membrane as electrode in energy storage devices. To solve the above challenges, herein an orientation-compaction densification strategy is proposed to enhance the bulk density and volumetric capacity of PAN-based carbon nanofiber membranes as self-supporting electrode used in lithium-ion batteries（LIBs）. Specifically, highly-oriented fibers are achieved by high-speed roller collecting during electrospinning, and compaction densification is conducted by hot-pressing treatment. The effects of collecting speed and hot-pressing pressure on the morphology, conductivity,bulk density, tensile strength, and flexibility of the obtained carbon nanofiber membrane are *** to conventional fiber membranes, of which fibers are disorderly stacked, the oriented fiber membrane is much easier to achieve dense stacking by compaction. The obtained dense carbon nanofiber membrane demonstrates a bulk density of 0.566 g cm-3, and shows a significantly-enhanced volumetric capacity(318.3 mA h cm-3), high-rate performance(86.6 mA h cm-3at 5 A g-1), and satisfactory cycling stability when used as selfsupporting electrode of LIBs.

关键词： Bulk density Densification Electrospinning Orientation-compaction Volumetric capacity

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Graphene-functionalized textile composites for wearable Joule heating applications

Advanced Nanocomposites

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Advanced Nanocomposites 2025年 2卷 108-123页

作者： Omar Faruk Abbas Ahmed Ashfaqul Hoque Khadem Lu Jia Luyi Sun Department of Materials Science and Engineering Binghamton University State University of New York at Binghamton NY 13902 USA Polymer Program Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs CT 06269 USA Department Mechanical Engineering College of Engineering Computing and Applied Science Clemson University Clemson SC 29634 USA College of Textile Engineering Taiyuan University of Technology Jinzhong Shanxi 030600 China

Thermal comfort is essential for maintaining physiological well-being, with textile materials traditionally serving as the primary medium for regulating heat exchange between the body and its environment. However, conventional textiles often fall short of maintaining optimal thermal balance. So, there is an increasing demand for advanced thermoregulation systems that can effectively reduce heat loss and enhance warmth, ensuring consistent comfort. Recent research has highlighted the promise of advanced functional materials, especially graphene and its composites, for modifying textiles to improve thermal properties. This article comprehensively reviews recent advancements in graphene-functionalized textile composites, focusing on their applications in wearable Joule heaters designed for personalized thermal comfort or thermal therapy. Various graphene-functionalized textile composites are reviewed from the perspectives of material properties, processing strategies and device fabrication methods. Key challenges and future opportunities are summarized for graphene-functionalized textile-based Joule heaters as innovative solutions in wearable thermal regulation.

关键词： Graphene textile Composite Wearable electronics Joule heater

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Exploring barriers to ICT adoption in road freight operations 6

Exploring barriers to ICT adoption in road freight operation...

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6th International Conference on Industry 4.0 and Smart Manufacturing, ISM 2024

作者： Callefi, Mario Henrique Shiramizu, Sara Yumi De Carvalho, Luiz Antonio Thürer, Matthias Cotrim, Syntia Lemos Del Rosso Calache, Lucas Daniel Chair of Factory Planning and Intralogistics Chemnitz University of Technology Chemnitz09125 Germany Department of Textile Engineering State University of Maringá Avenue Reitor Zeferino Vaz S/n Goioere87360-000 Brazil Post Graduation Program in Production Engineering State University of Maringá Avenue Colombo 5790 Maringá87020-900 Brazil School of Engineering Campus of Sao Joao da Boa Vista Av. Profa. Isette Corrèa Fontão 505 São João da Boa Vista13876-750 Brazil

This study investigates barriers to adopting Information and Communication Technology (ICT) in road freight transportation, a sector where operational efficiency is crucial. A mixed-method approach comprising a Systematic Literature Review, the Fuzzy Delphi Method, and the Best and Worst Method was employed to evaluate these barriers. Five main obstacles were identified: lack of top management and investor support, resistance to change, absence of economic and political incentives, uncertainties regarding return on investment, and high technology investment costs. The most significant barrier was the lack of top management support, which influenced investment and strategic decisions. Theoretically, the research enhances understanding of technology adoption barriers in road freight transportation, providing insights for future academic and practical applications. From a managerial point of view, this study offers insights to improve ICT adoption strategies, thereby boosting sector efficiency and competitiveness. © 2024 The Authors. Published by Elsevier B.V.

关键词： ICT adoption barriers Multi-criteria decision making Road freight transportation

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Applicable models for multi-component adsorption of dyes:A review

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Journal of Environmental Sciences 2013年第3期25卷 419-429页

作者： Babak Noroozi George A.Sorial Department of Textile Engineering University of Guilan Visiting Scholar Environmental Engineering ProgramUniversity of Cincinnati Environmental Engineering Program University of Cincinnati

Adsorption is one of the several techniques that has been successfully used for dyes *** most industrial colored effluents contain several components including dyes,having a strong knowledge about the scope of competitive adsorption process is a powerful key to design an appropriate *** is mainly because of the complexity brought about by the increasing number of parameters needed for process description which complicates not only the process modeling but also the experimental data collection.A multicomponent adsorption model should be based on fundamental soundness,speed,and simplicity of *** such systems,competition will change the adsorbent-adsorbate ***,there is major concern to develop an accurate and reliable method to predict dye adsorption behavior in multi-component *** article covers topics such as the theory of dyes adsorption in multi-component systems along with applicable models according to the consistent theories presented by researchers.

关键词： adsorption dye multi-component isotherm models

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Exploring barriers to ICT adoption in road freight operations

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Procedia Computer Science 2025年 253卷 1702-1711页

作者： Mario Henrique Callefi Sara Yumi Shiramizu Luiz Antonio de Carvalho Matthias Thürer Syntia Lemos Cotrim Lucas Daniel Del Rosso Calache Chair of Factory Planning and Intralogistics Chemnitz University of Technology 09125 Chemnitz Germany Department of Textile Engineering State University of Maringá Avenue Reitor Zeferino Vaz S/n Goioerê 87360-000 Brazil Post graduation program in Production Engineering State University of Maringá Avenue Colombo 5790 Maringá 87020-900 Brazil Sao Paulo State University (Unesp) School of Engineering Campus of Sao Joao da Boa Vista Av. Profa. Isette Corrèa Fontão 505 São João da Boa Vista 13876-750 Brazil

关键词： ICT adoption barriers Road freight transportation Multi-criteria decision making

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Kinetics of water swelling and development of porous structure in ionic poly(acrylonitrileacrylamide-acrylic acid) hydrogels

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POLYMER 1996年第6期37卷 1019-1025页

作者： Hu, DSG Chou, KJN Program in Polymers Department of Textile Engineering National Taiwan Institute of Technology Taipei Taiwan 107 ROC

The kinetics of water uptake into the dry form of, and benzoic acid diffusion through, swollen inhomogeneous poly(acrylonitrile-acrylamide-acrylic acid) gels were investigated with gravimetry and ultra-violet visible spectroscopy, respectively. The goal is to understand the effects of ionizable moieties and water-polymer affinity on the rate of water diffusion during the formation of hydrogels from glassy polymers and on the free-volume mechanism for solute transport through the resulting swollen networks. The xerogel with intermediate acid content or minimal affinity with water has the maximum water diffusion coefficient in the initial swelling stage and the maximum deviation from Fickian transport. The molecular diffusion of benzoic acid through hydrogels was found to be controlled by the swelling, and the size of voids for solute diffusion does not remain constant over all the range of compositions. This discrepancy from the simple free-volume theory is due to a wide range of molecular interactions for gels with amide/acid moieties. In conclusion, dynamic swelling is influenced by water-polymer affinity and subsequently causes various types of steady transport in hydrogels.

关键词： dynamic swelling solute diffusion ionic hydrogels

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WATER-POLYMER INTERACTIONS AND CRITICAL PHENOMENA OF SWELLING IN INHOMOGENEOUS POLY(ACRYLONITRILE-ACRYLAMIDE-ACRYLIC ACID) GELS

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POLYMER 1994年第20期35卷 4416-4422页

作者： HU, DSG LIN, MTS Program in Polymers and Textiles Department of Textile Engineering National Taiwan Institute of Technology Taipei Taiwan 107 Republic of China

The water uptake and swelling behaviour of physically crosslinked, inhomogeneous poly(acrylonitrile-acrylamide-acrylic acid) hydrogels from 10 to 60 degrees C were determined by gravimetry/differential scanning calorimetry and volume measurement, respectively. The contents of water and its non-bound portion were found to reach a minimum value at acrylamide content around 33.5 mol%, at which the water uptake of this gel does not vary with the temperature. The non-bound water was found to decrease gradually and then increase with increasing amide concentration. The duration of the post-gelation treatment between -10 and 10 degrees C was also shown to be one of the factors affecting the extent of the water uptake in gels. The critical endpoint temperatures (T(c)s) of hydrogels, obtained from volume phase transition data upon changing the acetone concentration in aqueous solutions at various temperatures, were shown to decrease with the increasing acid or amide contents. The water uptake for gels with lower amide contents decreases with increasing temperature. However, there is an opposite trend for water uptake in gels with higher amide content, and the critical points on the plots of the amount of water uptake versus temperature appear at a temperature equal to T-c.

关键词： INHOMOGENEOUS HYDROGELS SWELLING PHASE TRANSITION

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The Soft-Confined Method for Creating Molecular Models of Amorphous Polymer Surfaces (vol 116, pg 1570, 2012)

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JOURNAL OF PHYSICAL CHEMISTRY B 2012年第8期116卷 2633-2633页

作者： Liu, Hongyi Li, Yan Krause, Wendy E. Rojas, Orlando J. Pasquinelli, Melissa A. †Fiber and Polymer Science Program and the Department of Textile Engineering Chemistry and Science North Carolina State University Raleigh NC 27695 United States

The goal of this work was to use molecular dynamics (MD) simulations to build amorphous surface layers of polypropylene (PP) and cellulose and to inspect their physical and interfacial properties. A new method to produce molecular models for these surfaces was developed, which involved the use of a “soft” confining layer comprised of a xenon crystal. This method compacts the polymers into a density distribution and a degree of molecular surface roughness that corresponds well to experimental values. In addition, calculated properties such as density, cohesive energy density, coefficient of thermal expansion, and the surface energy agree with experimental values and thus validate the use of soft confining layers. The method can be applied to polymers with a linear backbone such as PP as well as those whose backbones contain rings, such as cellulose. The developed PP and cellulose surfaces were characterized by their interactions with water. It was found that a water nanodroplet spreads on the amorphous cellulose surfaces, but there was no significant change in the dimension of the droplet on the PP surface; the resulting MD water contact angles on PP and amorphous cellulose surfaces were determined to be 106 and 33°, respectively. [ABSTRACT FROM AUTHOR]

关键词： MOLECULAR models AMORPHOUS substances SURFACES (Technology) INTERFACES (Physical sciences) MOLECULAR dynamics -- Simulation methods COMPACTING SURFACE energy

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Polyacrylonitrile Nanofber‑Reinforced Flexible Single‑Ion Conducting Polymer Electrolyte for High‑Performance,Room‑Temperature All‑Solid‑State Li‑Metal Batteries

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Advanced Fiber Materials 2022年第3期4卷 532-546页

作者： Hui Cheng Chaoyi Yan Raphael Orenstein Mahmut Dirican Shuzhen Wei Nakarin Subjalearndee Xiangwu Zhang Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695USA

Single-ion conducting polymer electrolytes(SIPEs)can be formed by anchoring charge delocalized anions on the side chains of a crosslinked polymer matrix,thereby eliminating the severe concentration polarization efect in conventional dual-ion polymer *** of a plasticizer into the polymer matrix confers advantages of both liquid and solid ***,plasticized SIPEs usually face a trade-of between conductivity and mechanical *** insufcient strength,potentially there is short-circuiting failure during *** address this challenge,a simple and mechanicallyrobust SIPE was developed by crosslinking monomer lithium(4-styrenesulfonyl)(trifuoromethylsulfonyl)imide(LiSTFSI)and crosslinker poly(ethylene glycol)diacrylate(PEGDA),with plasticizer propylene carbonate(PC),on electrospun polyacrylonitrile nanofbers(PAN-NFs).The well-fabricated polymer matrix provided fast and efective Li^(+) conductive pathways with a remarkable ionic conductivity of 8.09×10^(-4) S cm^(−1) and a superior lithium-ion transference number close to unity(t_(Li+)=0.92).The introduction of PAN-NFs not only improved the mechanical strength and fexibility but also endowed the plasticized SIPE with a wide electrochemical stability window(4.9 V ***^(+)/Li)and better cycling *** longterm lithium cycling stability and dynamic interfacial compatibility were demonstrated by lithium symmetric cell *** importantly,the assembled all-solid-state Li metal batteries showed stable cycling performance and remarkable rate capability both in low and high current ***,this straightforward and mechanically reinforced SIPE exhibits great potential in the development of advanced all-solid-state Li-metal batteries.

关键词： Single-ion conducting polymer electrolyte Electrospun nanofbers Mechanical properties All-solid-state batteries Rate capability

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SYNTHESIS AND DIELECTRIC CHARACTERIZATION OF POLY[ACRYLONITRILE-CO-ACRYLAMIDE-CO-(ACRYLIC ACID)] TERPOLYMER GELS

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MACROMOLECULAR CHEMISTRY AND PHYSICS 1994年第11期195卷 3629-3642页

作者： HU, DSG LIN, YS Program in Polymers and Textiles Dept. of Textile Engineering National Taiwan Institute of Technology Taipei Taiwan 107 R. O. C

The acidic hydrolysis of polyacrylonitrile, stabilization and thermal gelation in mixed solvents were sequentially carried out to yield a variety of terpolymer gels made up of 58,5 to 89,4 mol-% units of acrylonitrile, 10,2 to 39,2 mol-% acrylamide and 0,4 to 2,3 mol-% acrylic acid. The post-hydrolysis stabilization at temperature below 0-degree-C was shown to induce chemical conversion from acrylonitrile to acrylamide, that is more pronounced for a certain range of initial acrylamide contents than others as evidenced by the kinetic analysis using H-1 NMR and base titration. The dielectric relaxation measurements on swollen gels show three relaxation transitions, alpha, beta and gamma in decreasing order of temperature, over -150 to 0-degree-C. The alpha-transition, due to the segmental motion of the polymer, is the least distinct of the three. The beta- and gamma-transitions in decreasing order of temperature are associated with the cooperative motion of polar groups with water and glass transition of water, respectively, as judged from the activation energy and temperature of relaxation. The beta-relaxation was shown to be strongly influenced by the type of swelling solvent in the gel, water contents and chemical composition of the gel. Furthermore, the Cole-Cole plots in the region of the beta-relaxation were constructed to demonstrate the role of morphology in the dielectric behaviour of hydrogels.

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