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Stretchable electrothermochromic fibers based on hierarchical porous structures with electrically conductive dual-pathways

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Science China Materials 2020年第12期63卷 2582-2589页

作者： Hongwei Fan Qiang Li Kerui Li Chengyi Hou Qinghong Zhang Yaogang Li Hongzhi Wang State Key Laboratory for Modification of Chemical fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Engineering Research Center of Advanced Glasses Manufacturing Technology Ministry of EducationDonghua UniversityShanghai 201620China

Stretchable color-changing fibers are urgently demanded for smart textiles/clothing due to their perfect implantability,permeability of vapor and heat,and flexibility/***,stretchable electrothermochromic fibers were fabricated with unconventional stretchable conductive fibers as core layers and thermochromic coatings as shell *** the stretchable conductive fibers,hierarchical porous structures with percolative one-dimensional(1 D)conductive networks were constructed through phase inversion of carbon nanotube/polyurethane(CNT/PU)*** the deposition of silver nanoparticles(AgN Ps)on the surface of micro-pores,electrically conductive dual-pathways consisting of0 D AgN Ps and 1 D CNTs were formed to significantly enhance the electric conductivity and thus improve the electrothermal performance of the *** importantly,because of the connective CNTs and AgN Ps,such dual-pathways ensured the electron transport under the stretching state,preventing the sharp decay of conductivity and electrothermal *** the continuous wet-spinning method,the stretchable conductive fibers can be easily obtained with the length up to several *** last,stretchable electrothermochromic fibers were prepared with two color-changing modes and implanted into textile perfectly,advancing their applications in wearable display and military adaptive camouflage of smart clothing.

关键词： hierarchical porous structures conductive dual-pathways stretchable conductive fibers electrothermochromic fibers smart clothing

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