Elastic Bio-based Polyurethane Nanofibrous Membrane with Robust Waterproof and Breathable Properties

作     者：刘浩克 王婷 闫子硕 斯阳 俞建勇 丁彬 LIU Haoke;WANG Ting;YAN Zishuo;SI Yang;YU Jianyong;DING Bin

作者机构：College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Innovation Center for Textile Science and TechnologyDonghua UniversityShanghai 200051China State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghai 201620China 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2023年第40卷第3期

页      面：237-246页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Key R&D Program of China(No.2021YFE0105100) Fok Ying-Tung Education Foundation,China(No.171065) Shanghai Rising-Star Program,China(No.20QA1400500) 

主　　题：bio-based polyurethane(PU) electrospinning waterproof breathable membrane 

摘      要：Elastic bio-based waterproof and breathable membranes(EBWBMs) allow the passage of water vapor effectively and resist the penetration of liquid water,making it ideal for use under extreme *** this study,we used a facile strategy to design the bio-based polyurethane(PU) nanofibrous membranes with the nanoscale porous structure to provide the membranes with high waterproof and breathable *** optimization of nanofibrous membrane formation was accomplished by controlling the relative ambient humidity to modulate the cooperating effects of charge dissipation and non-solvent-induced phase *** obtained EBWBMs showed multiple functional properties,with a hydrostatic pressure of 86.41 kPa and a water vapor transmission(WVT) rate of 10.1 kg·m^(-2)·d^(-1).After 1 000 cycles of stretching at 40% strain,the EBWBMs retained over 59% of the original maximum stress and exhibited an ideal elasticity recovery ratio of 85%.Besides,even after 80% deformation,the EBWBMs still maintained a hydrostatic pressure of 30.65 kPa and a WVT rate of 13.6 kg·m^(-2)·d^(-1),suggesting that bio-based PU nanofibrous membranes could be used for protection under extreme conditions.