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High-Performance Natural Melanin/Poly(vinyl Alcohol-co-ethylene) Nanofibers/PA6 Fiber for Twisted and Coiled Fiber-Based Actuator

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Advanced Fiber Materials 2020年第2期2卷 64-73页

作者： Jiahui Chen esfandiar pakdel Wanjie Xie Lu Sun Mengyuan Xu Qiongzhen Liu Dong Wang College of Materials Science and Engineering Hubei Key Laboratory of Advanced Textile Materials&ApplicationWuhan Textile UniversityWuhan 430200China Australian Future Fibers Research and Innovation Center Institute for Frontier MaterialsDeakin University75 Pigdons RoadGeelongVIC 3220Australia

Twisted and coiled fiber-based actuators have drawn a great attention because their unique structure can provide mechanical response with the external thermal ***,an ultra-fast and light-weight twisted and coiled fiber-based actuator was designed based on a nature melanin/poly(vinyl alcohol-co-ethylene)(PVA-co-PE)nanofibers/PA6 composite *** brief,PA6 was firstly coated by melanin/PVA-co-PE nanofibers using a spraying method,followed by the twisting and coat-ing the composite fiber to obtain the *** excellent photothermal property of melanin contributed to the superior performance of the actuator,whereas the PVA-co-PE nanofibers was responsible for the uniform distribution of melanin and the enhanced mechanical property of the *** unique design has led to the high performance of the melanin/NFs/PA6 fiber-based actuator,whose torsion actuation can reach to 14,000 rpm,and maximum tensile actuation was−6.36%at temperature difference of 40℃.In addition,the tensile stress of PA6/NFs/melanin fiber was about four times higher than PA6 *** to the simple and environmental-benign preparation method,as well as the excellent effi-ciency of twisted and coiled melanin/NFs/PA6 fiber-based actuator,this study highlights the facile design of the composite fiber for high-performance fiber-based *** fiber-based actuator is promising for application in energy generator.

关键词： Fiber-based actuator Photothermal efficiency Nanofibers Nylon

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