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Structural design and mechanical performance of composite vascular grafts

Bio-Design and Manufacturing 2022年第4期5卷 757-785页

作者： Abdul Wasy Zia Rong Liu Xinbo Wu school of fashion and textiles The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina

This study reviews the state of the art in structural design and the corresponding mechanical behaviours of composite vascular grafts. We critically analyse surface and matrix designs composed of layered, embedded, and hybrid structures along the radial and longitudinal directions;materials and manufacturing techniques, such as tissue engineering and the use of textiles or their combinations;and the corresponding mechanical behaviours of composite vascular grafts in terms of their physical–mechanical properties, especially their stress–strain relationships and elastic recovery. The role of computational studies is discussed with respect to optimizing the geometrics designs and the corresponding mechanical behaviours to satisfy specialized applications, such as those for the aorta and its subparts. Natural and synthetic endothelial materials yield improvements in the mechanical and biological compliance of composite graft surfaces with host arteries. Moreover,the diameter, wall thickness, stiffness, compliance, tensile strength, elasticity, and burst strength of the graft matrix are determined depending on the application and the patient. For composite vascular grafts, hybrid architectures are recommended featuring multiple layers, dimensions, and materials to achieve the desired optimal flexibility and function for complying with user-specific requirements. Rapidly emerging artificial intelligence and big data techniques for diagnostics and the threedimensional(3D) manufacturing of vascular grafts will likely yield highly compliant, subject-specific, long-lasting, and economical vascular grafts in the near-future.

关键词： Vascular grafts Surface design Structural design Composite materials Mechanical properties

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Adhesion Enhancement Mechanism of Plasma-Modified Tire Cord

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Journal of Donghua University(English Edition) 2011年第4期28卷 423-426页

作者：刘艳春白刚潘玲芳 College of textiles and fashion Shaoxing University

Tire cord was treated with oxygen glow-discharge plasma in order to enhance the *** treated surfaces were characterized by scanning electron microscopy(SEM),specific surface area analysis Brunauer-Emmett-Teller(BET),X-ray photoelectron spectroscopy(XPS),contact angle measurement,and the standard H-pull *** indicated that the plasma treatment could increase the surface roughness,modify the nature and density of surface functional groups,and greatly improve the surface energy and adhesion of tire *** long term storage in ambient air,the enhanced adhesion decreased slightly.

关键词： tire cord adhesion surface energy ageing

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Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide-range strain sensing

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SmartMat 2023年第6期4卷 98-111页

作者： Ben Niu Su Yang Yiyi Yang Tao Hua school of fashion&textiles The Hong Kong Polytechnic UniversityHong Kong SARChina

Recently the ever-increasing demand for wearable electronics has greatly triggered the development of flexible strain ***,it is still challenging to simultaneously achieve high sensitivity,wide working range,and good ***,we developed a highly stretchable fiber strain sensor based on wet-spun porous polyurethane(PU)fiber,and especially a unique conductive network of dual silver(Ag)/carbon black(CB)layers is *** strain,the rapid crack propagation on the brittle Ag layer brings a large resistance change and thus high sensitivity,while the tunneling-effect dominated CB layer bridges the separated Ag islands to maintain the integrity of conductive pathways under large *** means of the synergistic effect of Ag/CB layers,this composite fiber of Ag/CB@PU presents not only high conductivity of 5139.9 S/m,but also ultrahigh sensitivity with a gauge factor of 2.52×10^(6) and a wide working range of up to 200%.Besides that,it is also capable of detecting very tiny strain of 0.1%and working stably for over 8000 *** mature weaving technology,this fiber strain sensor can be seamlessly integrated into the textile to conformally track different movements of the human *** with the facile all-solution-based fabrication protocol,this work proposed a new strategy to prepare high-performance fiber strain sensor,promising the textile-based wearable applications.

关键词： carbon black conductive fiber strain sensor textile

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A mild, configurable, flexible CoNi-LDH（v）/Zn battery based on H-vacancy-induced reversible Zn2+ intercalation

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Journal of Energy Chemistry 2025年第1期 498-508页

作者： Xinyue Cheng Dingsheng Wu Hao Gao Qingqing Wang Pengfei Lv Sam S.Yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University school of Mechanical Engineering Korea University

Flexible Zn-based batteries have attracted increasing research interest as essential components of wearable energy storage ***,the advancement of flexible aqueous Zn-based batteries based on Co-Ni layered double hydroxide （CoNi-LDH） as the cathode material is hampered by their poor cycling stability and the corrosiveness of alkaline ***,CoNi-LDH nanosheets enriched with H vacancies (CoNi-LDH（v）) were constructed on a flexible carbon cloth （CC） substrate via electrochemical deposition and *** Zn-based battery comprising CoNi-LDH（v）@CC as the cathode exhibited highly reversible conversion reactions and stable operation in 3 M ZnSO4electrolyte （pH=4）.The battery delivered an excellent specific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling stability（53.9%,900 cycles）,and high discharging *** abundant H vacancies served as active sites for the reversible intercalation of Zn2+and the extravasation of NO3-generated channels and space for Zn2+transport and storage,together enabling an excellent Zn2+storage ***,a sandwich-structured solid-state CoNi-LDH（v）@CC//Zn@CC battery was fabricated and was found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencapsulated battery powered a digital watch under various deformation conditions and operated stably for 80 ***,the flexible battery displayed outstanding customizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** proposed engineering strategy contributes to the realization of textiles with truly wearable energy-storage devices.

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Physicochemical Properties of Poly(Vinyl Alcohol)/Chitosan/Soluble Starch Composite Hydrogel

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Journal of Donghua University(English Edition) 2020年第6期37卷 455-459页

作者： WANG Lei HUANG Yifan BAO Zelin LI Tingxiao XIN Binjie school of textiles and fashion Shanghai University of Engineering ScienceShanghai 201620China

Fabricating of hydrogels based upon polymers and inorganic matter is an innovative replacement for the generation of adaptable *** this study,the poly(vinyl alcohol)(PVA)/chitosan(CS)/soluble starch(SS)composite hydrogel was prepared by the solution blending method,in which SS was used as a cross-linking agent to cross-link with PVA in order to improve the stability of PVA in the tissue *** composition and the thermal stability of hydrogels were characterized by Fourier transform infrared(FTIR)spectroscopy and thermo gravimetric analysis(TGA).The result shows that the PVA/CS/SS composite hydrogel possesses potentially morphological and thermal stability and can be used for tissue engineering.

关键词： poly(vinyl alcohol)(PVA) chitosan(CS) soluble starch(SS) hydrogel thermal stability

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Recent Advances in Superhydrophobic and Antibacterial Cellulose‑Based Fibers and Fabrics:Bio‑inspiration,Strategies,and Applications

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Advanced Fiber Materials 2023年第5期5卷 1555-1591页

作者： Hua Zhou Qingshuo Li Zhong Zhang Xungai Wang Haitao Niu College of textiles and Clothing Qingdao UniversityQingdao 266071China Collaborative Innovation Center for Eco‑textiles of Shandong Province and the Ministry of Education Collaborative Qingdao UniversityQingdao 266071China JC STEM Lab of Sustainable Fibers and textiles School of Fashion and TextilesThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

Cellulose-based fabrics are ubiquitous in our daily *** are the preferred choice for bedding materials,active sportswear,and next-to-skin ***,the hydrophilic and polysaccharide characteristics of cellulose materials make them vulnerable to bacterial attack and pathogen *** design of antibacterial cellulose fabrics has been a long-term and on-going *** strategies based on the construction of surface micro-/nanostructure,chemical modification,and the application of antibacterial agents have been extensively investigated by many research groups *** review systematically discusses recent research on super-hydrophobic and antibacterial cellulose fabrics,focusing on morphology construction and surface ***,natural surfaces showing liquid-repellent and antibacterial properties are introduced and the mechanisms behind are ***,the strategies for fabricating super-hydrophobic cellulose fabrics are summarized,and the contribution of the liquid-repellent function to reducing the adhesion of live bacteria and removing dead bacteria is *** studies on cellulose fabrics functionalized with super-hydrophobic and antibacterial properties are discussed in detail,and their potential applications are also ***,the challenges in achieving super-hydrophobic antibacterial cellulose fabrics are discussed,and the future research direction in this area is proposed.

关键词： Cellulose fiber Super-hydrophobic Antibacterial Fabrication strategies Applications

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Construction of a BiOI/ZnO heterojunction on biomass Juncus effusus fiber for photodegradation of organic pollutants

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Journal of Environmental Sciences 2024年第12期146卷 28-38页

作者： Sijie Zhou Na Zhu Pei Lyu Chunhua Zhang Zhuan Fu Junyao Gong Zhaozixuan Zhou Liangjun Xia State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China College of textiles Donghua UniversityShanghai 201620China school of fashion and textiles The Hong Kong Polytechnic UniversityHong Kong 999077China

Semiconductor heterojunction engineering and three-dimensional(3D)architecture con-struction have been considered highly desirable strategies to enhance photocatalytic ***,a BiOI/ZnO composite photocatalyst with a 3D flower-like architecture was successfully prepared,whichwas stably immobilized on three-dimensional porous lignocel-lulosic biomass Juncus effusus(JE)*** outstanding photocatalytic performance of the BiOI/ZnO-JE fiber was confirmed by the degradation of tetracycline hydrochloride(TC,90%),ciprofloxacin(CIP,79%),and norfloxacin(NOR,81%).The enhanced photocatalytic activities were mainly attributed to the synergistic absorption performance of the lignocellulosic JE and the effective transfer and separation of ***,the hydroxyl(·OH)and super-oxide radicals(·O_(2)^(−))are themain reactive species in the photocatalytic process according to the *** work may provide a novel perspective for constructing high-performance lignocellulosic-based photocatalytic materials.

关键词： Heterojunction BiOI/ZnO Organic pollutants Biomass-based Juncus effusus fiber Photodegradation

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Interfacial friction induced capillary flow within nanofiber-supported ionic liquid droplets

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Green Energy & Environment 2024年第5期9卷 789-791页

作者： Yuanyuan Zhao Gang Xia Yintung Lam John Haozhong Xin school of fashion and textiles The Hong Kong Polytechnic UniversityHong KongChina Shenzhen Research Institute The Hong Kong Polytechnic UniversityShenzhenChina

As global economic growth increases,the demand for energy sources *** fossil fuels have traditionally satisﬁed this demand,their environmental inﬂuence and limited reserves require *** fuel combustion contributes substantially to greenhouse gas emissions,with a pressing need to halve these emissions by 2030 and target net-zero by *** energy sources,contributing currently to 29%of global electricity,are viewed as promising *** wind energy's potential,Zheng's team developed a novel method to harness even low wind speeds using well-aligned nanoﬁbers and an innovative“drop wind generator”.This system,combining moisture-saturated ionic liquid 3-Methyl-1-octylimidazolium chloride with speciﬁc nanoﬁber arrays,exploits wind-inducedﬂows for energy *** study highlights the vast untapped potential of low-speed wind as a sustainable energy source potentially for electronics.

关键词： Wind energy Low-speed wind Ionic liquid Electronic devices

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Study on Dynamic Heat-moisture Transfer Properties of Summer Fabrics Using Microclimatic Method

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Journal of Donghua University(English Edition) 2004年第5期21卷 69-72页

作者：蒋培清严灏景 College of fashion Huizhou University Huizhou 516001College of Textiles Donghua University Shanghai 200051 College of textiles Donghua University Shanghai 200051

The temperature and humidity of the microclimatic zone of summer fabrics in the course of sweating — evaporating — drying were measured with an apparatus specially made for the purpose. It is pointed out that temperature and humidity changes in quantitative perspiration evaporation process in the microclimatic zone can express the dynamic heat-moisture comfortability. Characteristic values include temperature decline speed, temperature rising speed, humidity rising speed, humidity balance value, and humidity decline speed. Fabrics with good air permeability are beneficial to improving comfortability of summer fabrics, while temperature rising speed and humidity decline speed in the microclimatic zone of thick and heavy fabrics with good hygroscopicity are relatively slow. Through comparing fabrics dynamic heat-moisture curves obtained respectively with Microclimatic Method and Heat Loss Method, the two methods are identical essentially.

关键词： summer fabric dynamic heat-moisture comfortability microclimatic temperature humidity

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Algorithm for Automatic Generation of Curved and Compound Twills

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Journal of Donghua University(English Edition) 2005年第2期22卷 19-22页

作者：王梅珍王府梅王善元 Zhejia Textile & fashion College Ningbo 315211 College of textiles Dong Hua University Shanghai 200051

A new arithmetic using matrix left-shift functions for the quicker generation of curved and compound twills is introduced in this paper. A matrix model for the generation of regular, curved and compound twill structures is established and its computing simulation realization are elaborated. Examples of the algorithm applying in the simulation and the automatic generation of curved and compound twills in fabric CAD are obtained.

关键词： curved twill compound twill fabric weave arithmetic fabric simulation

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