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A Review on Digital Simulation Strategies and Its Applications for Advanced Compression Garments 16

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A Review on Digital Simulation Strategies and Its Applicatio...

16th Textile Bioengineering and Informatics Symposium, TBIS 2023

作者： Youn, Seonyoung Darden, Ryan Mathur, Kavita Fiber and Polymer Science Ph.D. Program North Carolina State University RaleighNC27606 United States Department of Textile Engineering Chemistry and Sciences M.S. Textile Engineering Program North Carolina State University RaleighNC27606 United States Department of Textile and Apparel Technology and Management North Carolina State University RaleighNC27606 United States

ISBN: (纸本)9781713879473

This paper presents a comprehensive review on the current state of digital simulation technology and its strategic application usages with a key focus on advanced compression garments. Although three-dimensional (3D) digital garment simulators have significantly impacted the apparel and textile industry, their use has been limited to visual prototyping, quality checking, or marketing. The physical properties of garment simulators have been overlooked in advanced functional manufacturing. This literature review investigates the possibility of strategically utilizing virtual physical properties to enhance garment functions, specifically in wearables and medical-grade compression fields. The first phase of this paper gives an overview of the current state of 3D garment simulation tools and their measurement features. This is followed by a gap analysis between simulated and physical property evaluations, focusing on minimizing the gaps. The literature is thoroughly examined to identify appropriate studies that uses digital tools for compressional garments and add value to wearables and healthcare applications. This paper provides valuable insights for apparel and textile engineers, enabling them to better understand the limitations and capabilities of garment simulators in improving advanced features for specific end users. © TBIS 2023. All rights reserved.

关键词： Physical properties

Advanced Flexible Carbon‑Based Current Collector for Zinc Storage

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Advanced Fiber Materials 2022年第6期4卷 1500-1510页

作者： Hao Jia Minghui Qiu Chunxia Tang Hongqi Liu Jinlin Xu Benjamin Tawiah Shou‑xiang Jiang Xiangwu Zhang Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxiJiangsuPeople’s Republic of China Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Department of Industrial Art(Textiles) Kwame Nkrumah University of Science and TechnologyKumasiGhana Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695‑8301USA

Carbon cloth(CC)-based electrodes have attracted extensive attention for next-generation wearable energy-storage devices due to their excellent electrical conductivity and mechanical ***,the application of conventional CC-based electrodes for zinc(Zn)storage severely hinders Zn ion transport and induces deleterious Zn dendrite growth,resulting in poor electrochemical ***,a novel oxygen plasma-treated carbon cloth(OPCC)is rationally designed as a current collector for flexible hybrid Zn ion supercapacitors(ZISs).The modified interface of OPCC with abundant oxygenated groups enables enhanced electrolyte wettability and uniform superficial electric field distribution.A prolonged working lifespan for Zn electrodeposition is achieved by the OPCC due to the improved interfacial kinetics and homogenized ion *** as-prepared hybrid ZIS also delivers excellent cycling endurance(98.5%capacity retention for 1500 cycles)with outstanding operation stability under various extreme *** facile surface modification strategy provides a new way for developing future flexible electrodes for wearable electronic products.

关键词： Zinc ion supercapacitor Carbon cloth Oxygen plasma treatment Interface kinetics

Effects of nanopores and sulfur doping on hierarchically bunched carbon fibers to protect lithium metal anode

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Carbon Energy 2021年第5期3卷 784-794页

作者： Ji In Jung Sunwoo Park Son Ha Se Youn Cho Hyoung-Joon Jin Young Soo Yun Program in Environmental and Polymer Engineering Inha UniversityIncheonSouth Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSouth Korea Carbon Composite Materials Research Center Korea Institute of Science and TechnologyWanju-gunJeollabuk-doSouth Korea Department of Polymer Science and Engineering Inha UniversityIncheonSouth Korea Department of Integrative Energy Engineering Korea UniversitySeoulSouth Korea

Studies on three-dimensional structured carbon templates have focused on how to guide homogeneous lithium metal nucleation and growth for lithium metal anodes(LMAs).However,there is still insufficient evidence for a key factor to achieve their high electrochemical ***,the effects of nanopores and sulfur doping on carbon-based nanoporous host(CNH)electrode materials for LMAs were investigated using natural polymer-derived *** pore-filling behaviors of lithium metal in the nanopores of the CNH electrode materials were first observed by ex situ scanning electron microscopy analysis,where the protective lithium metal nucleation and growth process led to significantly high Coulombic efficiency(CE)of~99.4%and stable 600 *** addition,a comparison study of CNH and sulfurdoped CNH(S-CNH)electrodes,which differ only in the presence or absence of sulfur,revealed that sulfur doping can cause lower electrochemical series resistance,higher CE value,and better cycling stability in a wide range of current densities and number of ***,S-CNH-based LMAs showed high electrochemical performance in full-cell Li-S battery tests using a sulfur copolymer cathode,where a high energy density of 1370Wh kgelectrode−1 and an excellent power density of 4120Wkgelectrode−1 were obtained.

关键词： carbon template Li-S batteries lithium metal anode lithium metal batteries nanoporous carbon sulfur doping

Interfacial Diffusion Manipulation by Amphiphilic Cellulose Nanocrystal Having Antibacterial Property for Asymmetric Polyamide Layer

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SSRN 2023年

作者： Seo, Huiran Shin, Huiseob Kong, Saerom Jung, Kyung Hwa Kim, Mun Hyeon Kim, Jae Jun Lee, Changha Kim, Hee Joong Lee, Jong-Chan Department of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University 1 Gwanak-ro Seoul08826 Korea Republic of Department of Polymer Science and Engineering & Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of

Polyamide (PA) thin-film composite (TFC) membranes, fabricated by interfacial polymerization (IP) process, have been widely used for the desalination process due to high water permeability with high water/salt selectivity. A number of advanced PA TFC membranes have been developed as more efficient alternatives to further improve separation performance, scalability, and address the surface contamination problem of commercial membranes. Here, we utilized amphiphilic functionalized cellulose nanocrystal (f-CNC) having antibacterial property as a nanofiller material for the preparation of an advanced PA membrane system, featuring improved water permeability with high salt rejection ability. This strategy is inexpensive, scalable, environmentally friendly, and practically relevant, given that typical IP process with a renewable nanofiller was employed. The amphiphilic f-CNC manipulates interfacial diffusion of monomers upon IP process, thereby decreasing the effective PA layer thickness by 30 % and increasing water permeability by 44 %. In addition, the PA membrane with f-CNC showed improved antibacterial and antifouling properties due to the specific nature of f-CNC. This study provides insights for the development of thin, effective, and antibacterial, yet more green and scalable PA membrane alternatives to the conventional desalination membranes. © 2023, The Authors. All rights reserved.

关键词： Cellulose

Structural evaluation of Poly(lactic acid) degradation at standardized composting temperature of 58 degrees

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Chemosphere 2024年 354卷 141729页

作者： Oh, Jiwon Park, Sung Bae Cha, Chaenyung Hwang, Dong Ki Park, Seul-A Park, Jeyoung Oh, Dongyeop X. Jeon, Hyeonyeol Koo, Jun Mo Ulsan44429 Korea Republic of Ulsan44919 Korea Republic of Pohang37673 Korea Republic of Department of Chemical and Biomolecular Engineering Sogang University Seoul04107 Korea Republic of Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of Daejeon34113 Korea Republic of Department of Organic Materials Engineering Chungnam National University Daejeon34134 Korea Republic of

The accumulation of petroleum-based plastics on our planet is causing serious environmental pollution. Biodegradable plastics, promoted as eco-friendly solutions, hold the potential to address this issue. However, their impact on the environment and the mechanisms of their natural degradation remain inadequately understood. Furthermore, the specific conditions set forth in international standards for evaluating the biodegradability of biodegradable plastics have led to misconceptions about their real-world behavior. To properly elucidate the relationship between their degradability and structure, this study mimics the thermal effect on poly(lactic acid) (PLA) under standardized composting temperature. The higher the crystallinity of PLA, the lower the degradation rate, which suggests that crystallinity is a key factor in determining degradation. The composting temperature of 58 °C induces crystallization by having a structural effect on the polymer, which in turn reduces the degradation rate of PLA. Therefore, control over temperature and crystallization during the processing and degradation of PLA is crucial, as it not only determines the biodegradability but also enhances the utility. © 2024

关键词： Biodegradability

Interfacial Diffusion Manipulation by Amphiphilic Cellulose Nanocrystal Having Antibacterial Property for Asymmetric Polyamide Layer

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SSRN 2023年

作者： Seo, Huiran Shin, Huiseob Kong, Saerom Jung, Kyung Hwa Kim, Mun Hyeon Kim, Jae Jun Suh, Dongwoo Baek, Youngbin Lee, Changha Kim, Hee Joong Lee, Jong-Chan Department of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University Seoul08826 Korea Republic of Department of Biological Engineering Inha University Incheon22212 Korea Republic of Department of Polymer Science and Engineering Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of

Polyamide (PA) thin-film composite (TFC) membranes, fabricated by interfacial polymerization (IP) process, have been widely used for the desalination process due to high water permeability with high water/salt selectivity. A number of advanced PA TFC membranes have been developed as more efficient alternatives to further improve separation performance and address the surface contamination problem of commercial membranes. Here, we utilized amphiphilic functionalized cellulose nanocrystal (f-CNC) having antibacterial property as a nanofiller material for the preparation of an advanced PA membrane system, featuring improved water permeability with high salt rejection ability. This strategy is inexpensive, scalable, environmentally friendly, and practically relevant, given that typical IP process with a renewable nanofiller was employed. The amphiphilic f-CNC manipulates interfacial diffusion of monomers upon IP process, thereby decreasing the effective PA layer thickness by 30% (from ~377 nm to ~268 nm) and increasing water permeability by 44% (from 1.26 Lm-2h-1bar-1 to 1.82 Lm-2h-1bar-1). In addition, the PA membrane with f-CNC showed improved antibacterial (~90%) and antifouling properties (~84%, FRR) due to the specific nature of f-CNC. This study provides insights for the development of thin, effective, and antibacterial, yet more green and scalable PA membrane alternatives to the conventional desalination membranes. © 2023, The Authors. All rights reserved.

关键词： Cellulose

Effect of Polyisoprene Microstructure on the Thermodynamics, Viscoelastic, and Dielectric Properties in the Bulk and during Flow in Nanopores

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Macromolecules 2025年第12期58卷 6052-6065页

作者： Panagiotis Kardasis Michail Danikas Nikolaos Patelis Konstantinos Ntetsikas Nikos Hadjichristidis George Floudas Department of Physics University of Ioannina 45110 Ioannina Greece Polymer Synthesis Laboratory Chemistry Program KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi Arabia Department of Physics University of Ioannina 45110 Ioannina Greece；Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany；University Research Center of Ioannina (URCI)─Institute of Materials Science and Computing 45110 Ioannina Greece

We report the effect of polyisoprene (PI) microstructure on the thermodynamics, viscoelasticity, and molecular dynamics, the latter via dielectric spectroscopy in bulk and during flow in cylindrical nanopores. A series of monodisperse PIs with microstructurescis-1,4,trans-1,4, 3,4, and 1,2 are synthesized via anionic polymerization using high-vacuum techniques using polar additives. In thermodynamics, we show that the liquid-to-glass temperature (Tg) decreases linearly with 1,4 units content asTg[K] = (289 ± 4)–0.9 ×w1,4%, whereas it increases quadratically with 3,4-units content asTg=Tg0%+(w3,4%)250[K]. Scaling of specific heats,cpglass,cpliquid,Tg, and the increment in specific heat atTg(Δcp) are established as a function of microstructure. In rheology, the zero-shear viscosity scales as η0= η0%×w1,4%–u, whereu= 5.4 ± 0.3. Despite this, the plateau modulus is independent of microstructure. All dielectrically active processes are strongly affected by microstructure. The dielectric strength of the β- and α-processes increases strongly with increasing 3,4-unit content, whereas that of the chain mode decreases precipitously. The calculated component of dipole moment along the polymer backbone scales with microstructure as μcis–1,4> μtrans–1,4> μ1,2> μ3,4≈ 0. The β-process shifts withTgand has characteristics of a Johari–Goldstein process with activation energies predicted by the coupling model. Lastly, we show that it is possible to separate blend components comprising different microstructures by the way of penetration within cylindrical nanopores, giving another example of what is known as “topology sorting.”

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A Braided Flexible Zn-MnO2 Yarn Battery Based on Cobweb-Like Carbonized Polypyrrole Modified Carbon Fiber Electrodes

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SSRN 2023年

作者： Chen, Lei Hu, Kairui Yang, Ke Yanilmaz, Meltem Han, Xu Liu, Yong Zhang, Xiangwu School of Textile Science and Engineering Tiangong University Tianjin300387 China Department of Textile Engineering Istanbul Technical University Istanbul Turkey Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University RaleighNC27695 United States

Flexible zinc ion batteries (ZIBs) are promising candidate for energy storage devices because of high safety and low cost. Carbon fiber (CF) is an ideal current collector for ZIBs due to its good flexibility, electrical conductivity and corrosion resistance. Herein, a novel CF-based current collector is proposed. At first, the inertness and non-polarity of CF were significantly modified by activating and etching to obtain a multi-layered pore structure. After then, carbonized polypyrrole (CPPy) nanowire conductive networks were built up on etched carbon fiber (ECF) by electrochemical in-situ growing and carbonization. Based on the CPPy network, MnO2 nanoflowers were grown firmly by the hydrothermal method to construct a multilayer MnO2@CPPy@ECF composite electrode. The multi-layered three-dimensional CPPy conductive network is rooted in the interior of MnO2, providing a dedicated transmission path for both electrons and ions during electrochemical redox reactions. The MnO2@CPPy@ECF electrode had an initial capacity of 346.1 mAh·g-1 at 0.1 A·g-1 and 252.8 mAh·g-1 after 800 cycles. In addition, the integrated flexible Zn-MnO2 2D fabric battery with MnO2@CPPy@ECF fabric cathode shows a specific capacity of 254.7 mAh·g-1 at 0.1 A · g-1. Finally, a flexible Zn-MnO2 yarn battery with unique structural advantages of high flexibility, shape adaptability, structural integrity and good mechanical stability was fabricated by the 2D braid method. The initial specific capacity of the flexible Zn-MnO2 yarn battery is 111.7 mAh·g-1 at 0.1C, and the coulomb efficiency reaches more than 98%. This work opens up a new pathway for the rational design of flexible electrodes for wearable ZIBs. © 2023, The Authors. All rights reserved.

关键词： Yarn

Elastomer-Based Soft Syntactic Foam with Broadly Tunable Mechanical Properties and Shapability

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SSRN 2024年

作者： Ghosh, Tushar K. Pragya, Akanksha Young, Natalie Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University RaleighNC27606 United States Fiber and Polymer Science Program Wilson College of Textiles North Carolina State University RaleighNC27695 United States

Fabrication of lightweight composites using thermally responsive expandable microspheres (EM) embedded in an elastomeric matrix to form syntactic foams offers significant opportunities to create functional and structural composites for diverse applications. The morphology of the EM-elastomer composite on the micro- and macro-scales is significantly influenced by the fabrication sequence and parameters (composition, expansion time/temperature, etc.). Herein, we report the morphological evolution of an EM-elastomer composite through the fabrication processes and elucidate the interaction of relevant fabrication parameters. Unlike the majority of published reports on hard EM composites, the in-situ expansion of the closed-cell foam structure within a soft matrix leads to larger void sizes, and the concomitant expansive force of the EM impacts the polymer chain mobility within the soft composite. At the same time, higher EM loading improves the mechanical properties;the evolved microstructure leads to a lightweight but stiff structure. For the first time, the report details the thermal expansion of EM under applied pretension, which leads to irreversible prestrain-dependent morphological changes toward anisotropic mechanical properties. Additionally, the composites are shaped under constrained expansion. The study provides a comprehensive guide and expands the pathways for the practical application of EM-embedded soft syntactic foams in aerospace, electronics, wearables, robotics, etc. © 2024, The Authors. All rights reserved.

关键词： Elastomers