Chunhong Lu

Donghua University

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i-10 index

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Kun Zhang

Donghua University

Jiaxian Lin

Shanghai Municipal Education Commission

Yuanyuan Zheng

Anhui University

Minzhi Du

Donghua University

Jilong Wang

East China Normal University

Juan Zhang

University of Jinan

Xiaona Yang

Donghua University

Shiren Wang

Texas A&M University

Xinyi Chen

University of Shanghai for Science and Technology

Yu Cheng

Tianjin Agricultural University

Cooperative Institutions

Donghua University

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Zhejiang University

Huazhong University of Science and Technology

Ministry of Education of the People's Republic of China

North Carolina State University

Soochow University

Peking University

Sichuan University

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The Application of Chinese Song Brocade Concepts in Developing Jacquard Woven Design and Fabrics

Journal of Textile Science & Fashion Technology (2021)

Chunhong Lu

Chinese Song Brocade, a traditional silk handicraft with a long history, is one of the first batch of China’s intangible cultural heritage. However, the development of Song Brocade is greatly limited due to its high cost, small audience and complex fabrication process. To make the past serve the present, and enhance the competitiveness of Song Brocade products, Song brocade concepts have been used to develop modern jacquard woven design and fabrics. The simplified Song Brocade jacquard woven fabrics based on aspects of design, weaving technology and weaving materials have been investigated. In detail, nine fabrics with different weft densities or weft materials are prepared by the modern jacquard fabric design process and weaving technology first. Later, the hygroscopic heating and moisture permeability of the fabrics are studied. The results show that the hygroscopic and thermal properties of the fabric can be enhanced with the increased content of the hygroscopic fiber or the increased weft density to some extent, and the moisture permeability of the fabric increases with the increased content of the moisture absorbing fiber content and the decreased weft density. The simplified Song Brocade fabric can effectively reduce the production cost of Song Brocade and promote Song Brocade to the massive market.

Weaving

10.33552/jtsft.2021.09.000709

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Citations (3)

Insight into the structure and mechanical performance of high content lignin reinforced poly (vinyl alcohol) gel‐spun fibers via the regulation of esterified hydrophilic lignin composition for better sustainability

Journal of Applied Polymer Science (2023)

Xiaorui Sun Jiaxian Lin Yu Cheng Lianjie Duan Xiaoxia Sun

Abstract Lignin is an effective low‐cost renewable reinforcement material for composite fibers at low concentration. In general, reinforcing synthetic polymeric fibers with high content lignin are preferred due to the fibers' enhanced sustainability. However, aggregation and disruption of fiber crystallinity often occurred at high lignin content, which often deteriorated fiber performance. Esterified hydrophilic lignin (modified lignin, ML) obtained from the esterification of organosolv lignin (OL) and D‐gluconic acid has good interaction with poly (vinyl alcohol) (PVA) matrix in gel‐spun fibers at low content. To investigate the effect of this ML on the structure and performance of high content lignin/PVA composite fibers at 30%, gel‐spun PVA fibers were prepared with different ratios of OL/ML (1/0, 2/1, 1/1, 1/2 and 0/1) in this work. The optimal mechanical performance was observed in 30% lignin mixture (OL/ML = 1/1) reinforced PVA fiber with a tensile strength of 1.1 GPa, modulus of 28 GPa, and toughness of 22 J g −1 , which were 50%, 60%, and 28% higher than that of 30% OL/PVA (OL/ML = 1/0) fiber, respectively. The excellent mechanical properties are mainly attributed to increased fiber crystallinity, molecular anisotropy, and interfacial bonding of the composite fibers.

Vinyl alcohol

Organosolv

10.1002/app.53577

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The Design and Development of Photochromic Jacquard Woven Fabric

Journal of Textile Science & Fashion Technology (2021)

Chunhong Lu

The jacquard woven fabric is often composed of dyed yarns to demonstrate brilliant colors and ever-changing patterns. Currently, the innovation of most jacquard woven fabrics focuses on pattern design, complicated weave structure and weaving process. To endow traditional jacquard woven fabric with functionality for value-added applications, it is necessary to combine artistic jacquard woven fabrics with functional yarns. To achieve this goal, the photochromic jacquard woven fabric has been developed by using photochromic yarn as weft yarn for reversible color change effect under sunlight or ultraviolet (UV) light. The design of photochromic jacquard woven fabric includes fabric pattern design and process design. Three jacquard woven fabric samples have been developed by changing two process parameters including weft density and weave structure. The effect of weft density and weft-float length on the photochromic performance of the jacquard woven fabrics has been investigated by comparing the coloration time and the color recovery time of fabricated samples with various weft densities and different weave structures under natural sunlight. The results show that as the jacquard woven fabric’s weft density increases, the coloration and color recovery time of jacquard woven fabric is prolonged. Similarly, with longer weft-float in the fabric weave structure of the same pattern, the color recovery time of jacquard woven fabric is prolonged. The design and development of the photochromic jacquard woven fabric not only indicate the fabric’s aesthetic value, but also provide practical reference for the design of smart fabrics.

Woven fabric

Fabric structure

Weaving

Float (project management)

Textile

10.33552/jtsft.2021.09.000712

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Textile‐Based Strain Sensor for Human Motion Detection

Energy & environment materials (2019)

Jilong Wang Chunhong Lu Kun Zhang

Human motion analysis consists of real‐time monitoring and recording of human body's kinematics. It is very essential to track ambulatory and daily‐life human motion, which is crucial for many applications and disciplines. Electronic textiles (e‐textiles) afford a valid alternative to traditional solid‐state sensors due to their merits of low cost, lightweight, flexibility, and feasibility to fit various human bodies. In this mini‐review, textile‐based sensor platforms and human motion analysis are well discussed in Section 1. Second, theoretical principles of textile‐based strain sensors are introduced including resistive, capacitive, and piezoelectrical sensors. Section 3 focuses on various types of textile materials that are functionalized as sensing systems by intrinsic or extrinsic modifications. Section 4 summaries various types of e‐textile‐based strain sensors for human motion analysis. The final two sections mainly present perspectives and challenges, and conclusions, respectively.

Human motion

Textile

Resistive touchscreen

Motion analysis

10.1002/eem2.12041

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Regulation Mechanism of Graphene Oxide on the Structure and Mechanical Properties of Bio-Based Gel-Spun Lignin/Poly (Vinyl Alcohol) Fibers

Research Square (Research Square) (2021)

Yanhong Jin Yuanyuan Jing Wenxin Hu Jiaxian Lin Yu Cheng

Abstract Lignin has been used as a sustainable and eco-friendly filler in composite fibers. However, lignin aggregation occurred at high lignin content, which significantly hindered the further enhancement of fiber performance. The incorporation of graphene oxide (GO) enhanced the mechanical properties of the lignin/poly(vinyl alcohol) (PVA) fibers and affected their structure. With the GO content increasing from 0 to 0.2%, the tensile strength of 5% lignin/PVA fibers increased from 491 MPa to 631 MPa, and Young's modulus increased from 5.91 GPa to 6.61 GPa. GO reinforced 30% lignin/PVA fibers also showed the same trend. The tensile strength increased from 455 MPa to 553 MPa, and Young's modulus increased from 5.39 GPa to 7 GPa. The best mechanical performance was observed in PVA fibers containing 5% lignin and 0.2% GO, which had an average tensile strength of 631 MPa and a Young’s modulus of 6.61 GPa. The toughness values of these fibers are between 9.9-15.6 J/g, and the fibrillar and ductile fracture microstructure were observed. Structure analysis of fibers showed that GO reinforced 5% lignin/PVA fibers had higher crystallinity, and evidence of hydrogen bonding among GO, lignin, and PVA in the gel fibers was revealed. Further, water resistance and swelling behavior of composite PVA fibers were studied to further evidence the structure change of composite fibers.

Vinyl alcohol

10.21203/rs.3.rs-184442/v1

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Electrochemical Performance of Coaxially Wet-Spun Hierarchically Porous Lignin-Based Carbon/Graphene Fiber Electrodes for Flexible Supercapacitors

ACS Applied Energy Materials (2021)

Wenxin Hu Ruifang Xiang Kun Zhang Qingli Xu Yan Liu

All-carbon flexible supercapacitors are highly promising in powering up wearable electronics in smart textiles. However, their low energy density hinders their practical application due to the lack of an effective fabrication method of highly conductive fiber electrodes with high specific capacitance. Herein, we develop a sustainable, scalable, and cost-effective method to fabricate lignin-based carbon/graphene fiber (GF) hybrid electrodes with a hierarchically porous structure. This engineered structure is achieved by coaxially wet spinning a graphene oxide fiber (GOF) as a core structural support and 0–10% lignin/graphene oxide (GO) as a surface layer, followed by carbonization and KOH activation processes. The obtained fiber electrodes exhibit the highest specific capacitance of 260.48 mF cm–2 at a current density of 0.1 mA cm–2, which is 11 times that of the neat GF from conventional wet spinning. The entire-device energy density of the assembled fiber-based flexible supercapacitors from the optimal fiber electrode is 5.79 μW h cm–2 in a H2SO4/poly(vinyl alcohol) electrolyte. Furthermore, the fiber-based flexible supercapacitors show ultralong cycling life and cycling stability (the capacitance retention rate is 98% after 7000 cycles of charge/discharge at a current density of 0.1 mA cm–2). This work enables the high-value utilization of low-cost carbon precursors (lignin and GO) in potential applications such as energy storage devices for smart textiles.

Carbon fibers

10.1021/acsaem.1c01379

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Citations (24)

Conductive nickel nanostrand-reinforced polymer nanocomposites

Chunhong Lu

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Three-Dimensional Hierarchically Porous Graphene Fiber-Shaped Supercapacitors with High Specific Capacitance and Rate Capability

ACS Applied Materials & Interfaces (2019)

Chunhong Lu Jie Meng Juan Zhang Xinyi Chen Minzhi Du

Chemically converted graphene fiber-shaped supercapacitors (FSSCs) are highly promising flexible energy storage devices for wearable electronics. However, the ultralow specific capacitance and poor rate performance severely hamper their practical applications. They are caused by severe stacking of graphene nanosheets and tortuous ion diffusion path in graphene-based electrodes; thus, the ultralow utilization of graphene has been rarely carefully considered to date. Here, we address these issues by developing three-dimensional hierarchically porous graphene fiber with the incorporation of holey graphene for efficient utilization of graphene to achieve fast charge diffusion and good charge storage capability. Without deterioration in electrical but robust mechanical properties, the optimal graphene fiber shows ultrahigh specific capacitance of 220.1 F cm–3 at current density of 0.1 A cm–3 and boosted specific capacitance of 254.3 F cm–3 at 0.1 A cm–3 after nitrogen doping. Moreover, the nitrogen-doped 40% holey graphene hybrid fiber-assembled FSSC exhibits ultrahigh rate capability (96, 91, and 87% at current density of 0.5, 1.0, and 2.0 A cm–3, respectively, and 67% even at ultrahigh current density of 10.0 A cm–3) and excellent cycle stability (95.65% capacitance retention after 10 000 cycles). The contribution of three-dimensional interconnected hierarchically porous network to the enhanced electrochemical (EC) performance is semiquantitatively elucidated by Brunauer–Emmett–Teller and energy dispersive spectroscopy mapping. Our work gives insights into the importance of fully utilizing graphene and provides an efficient strategy for high EC performance in chemically converted graphene-based FSSCs.

10.1021/acsami.9b06406

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Citations (53)

Design, preparation and characterization of three-dimensional auxetic warp and weft backed weave fabrics based on origami tessellation structures

Textile Research Journal (2022)

Qiaoli Xu Longxin Gu Zhuoran Liu Lei Zhang Jie Yuan

Materials with a negative Poisson’s ratio (NPR) are also called auxetic materials, which as a branch of mechanical metamaterials have drawn a great deal of attention in many areas. Origami tessellation structures (OTSs) exhibit an in-plane NPR; meanwhile, they may also show an out-of-plane NPR, which may be called three-dimensional (3D) auxetic structures. In the crease pattern of OTSs, there are folding lines in perpendicular directions. Contractions in the warp direction need warp backed weave structures. Herein, warp and weft backed weaves are used together and three OTS Jacquard fabrics are designed. From the physical map, we can see that the elastic warp yarns and elastic weft yarns can form floats in the warp and weft directions, and the flat fabrics can be folded in to 3D OTSs according to the crease patterns designed. The in-plane and out-of-plane Poisson’s ratios of OTSs have been predicted and, subsequently, compared with the experimental results. All OTS fabrics can show an in-plane NPR, two fabrics show out-of-plane NPRs and one shows an out-of-plane positive Poisson’s ratio. A parametric analysis about the interior angle has revealed the interplay between the geometrical parameters of OTSs and the Poisson’s ratio. In various design fields, elastic yarns combined with warp and weft backed weave textile technology can pave the way for realizing new crease pattern fabrics focused on 3D auxetic materials. Theoretical results can provide methodological guidance and technical support for the design and manufacture of OTS fabrics with optimum functional performance or desired aesthetics.

Auxetics

Tessellation (computer graphics)

Poisson's ratio

Characterization

10.1177/00405175221094044

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Citations (5)

Investigating the Structural and Mechanical Reinforcement Mechanism of Gel-Spun Lignin/Poly(vinyl alcohol) Fibers.

Chunhong Lu

Vinyl alcohol

Source

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Citations (2)