One-step fabrication of ultrathin porous Janus membrane within seconds for waterproof and breathable electronic skin

作     者：Yufeng Ni Bing Li Chengzhen Chu Shaofan Wang Yujie Jia Shichun Cao Rasoul Esmaeely Neisiany Chuanglong He Shuo Chen Zhengwei You 倪宇峰;李兵;储成臻;王少凡;贾宇杰;曹诗春;Rasoul Esmaeely Neisiany;何创龙;陈硕;游正伟

作者机构：State Key Laboratory of Advanced Fiber MaterialsInstitute of Functional MaterialsCollege of Materials Science and EngineeringResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai Key Laboratory of Lightweight CompositeDonghua UniversityShanghai 201620China College of Biological Science and Medical EngineeringDonghua UniversityShanghai 201620China Department of Materials and Polymer EngineeringFaculty of EngineeringHakim Sabzevari UniversitySabzevar***Iran Biotechnology CentreSilesian University of TechnologyGliwice44-100Poland 

出 版 物：《Science Bulletin》 (科学通报(英文版))

年 卷 期：2025年第70卷第5期

页      面：712-721页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China(52473004,52173117,32401133,and 21991123) Science and Technology Commission of Shanghai(20DZ2254900) 

主　　题：porous polyurethane kinetics 

摘      要：It remains a challenge for a simple and scalable method to fabricate ultrathin porous Janus membranes for stretchable on-skin ***,we propose a one-step droplet spreading phase separation strategy to prepare an ultrathin and easily collected Janus thermoplastic polyurethane(TPU)membrane within *** metal-ion solvation structure mitigated migration kinetics to delay TPU solution demixing,promoting the further penetration of the coagulating ***,the developed membranes,with an average preparation rate of 25.2 cm^(2)s^(−1),had a thickness of 5μm,and the water vapor transmission rate was determined to be 663 g m^(−2) d^(−1).The small pore layer having an average pore size of 1.7μm effectively blocked external liquid *** porous Janus TPU membrane coated by liquid metal served as a building block to develop a new generation of monolithic stretchable electronics with simultaneous high permeability and waterproofness.