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Spider-capture-silk mimicking fibers with high-performance fog collection derived from superhydrophilicity and volume-swelling of gelatin knots

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Collagen and Leather 2023年第1期5卷 45-54页

作者： Yuanzhang Jiang Harun Venkatesan Shuo Shi Cong Wang Miao Cui Qiang Zhang Lin Tan Jinlian Hu College of Biomass Science and Engineering Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan UniversityChengdu 610065China Department of Textile and Fibre Engineering Indian Institute of TechnologyDelhiNew Delhi 110016India Department of Biomedical Engineering City University of Hong KongKowloon 999077Hong Kong SARChina Shenzhen Bay Laboratory Shenzhen 518132China Key Laboratory of Biochip Technology Shenzhen Biotech and Health CentreCity University of Hong Kong Shenzhen Research InstituteShenzhen 518057China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China City University of Hong Kong Shenzhen Research Institute Shenzhen 518057China

Spider-capture-silk(SCS)can directionally capture and transport water from humid air relying on the unique geometrical *** there have been adequate reports on the fabrication of artificial SCSs from petroleum-based materials,it remains a big challenge to innovate bio-based SCS mimicking fibers with high-performance fog collection ability and efficiency ***,we report an eco-friendly and economical fiber system for water collection by coating gelatin on degummed *** to the previously reported fibers with the best fog collection ability(~13.10μL),Gelatin on silk fiber 10(GSF10)can collect larger water droplet(~16.70μL in 330 s)with~98%less ***,the water collection efficiency of GSF10 demonstrates~72%and~48%enhancement to the existing best water collection polymer coated SCS fibers and spidroin eMaSp2 coated degummed silk respectively in terms of volume-to-tcl(vapor-liquid-solid three-phase contact line)*** simultaneous function of superhydro-philicity,surface energy gradient,and~65%water-induced volume swelling of the gelatin knots are the key factors in advancing the water collection *** availability of feedstocks and~75%improved space utiliza-tion guarantee the scalability and practical application of such bio-based fiber.

关键词： Artificial spider-capture-silk Directional water collection volume-to-tcl index Superhydrophilicity volume swelling

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