文献类型：专利

英文题名：Method for preparing hollow fiber film, involves adding polyvinyl alcohol solution and perfluorosulfonic acid solution to prepare coating solution followed by adding hydrochloric acid with coating solution to prepare hollow fiber film

作者：CHENG L;MA X;WEI Y;XU Z

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY

申请号：CN102327743-A

申请日：2010-07-12

公开日：2012-01-25

语种：英文

收录：DERWENT

摘要：NOVELTY - A hollow fiber film preparation method involves coating polyvinyl alcohol (PVA) solution on a hollow fiber basement membrane. The coated membrane is dried to prepare a hollow fiber permeable vaporization membrane. The PVA and nanometer inorganic material i.e. perfluorosulfonic acid (PFSA) solution, are added to prepare catalytic coating solution The catalytic coating liquid is coated on a hollow fiber pervaporation film and dried at room temperature. Hydrochloric acid is added with the catalytic coating liquid to prepare a functional hollow fiber film. USE - Method for preparing a hollow fiber film. ADVANTAGE - The method enables preparing the hollow fiber film in a simple, convenient and fast manner, without using any complicated device. DETAILED DESCRIPTION - A hollow fiber film preparation method involves adding high macromolecule material or inorganic material into N, N-dimethyl acetamide, N, N-dimethyl formamide and polyethylene pyrrolidone to prepare casting solution for preparing organic or inorganic hollow fiber film. The PVA solution is coated on a hollow fiber basement membrane in crosslinking solution and dried at room temperature to prepare hollow a fiber permeable vaporization membrane, where the cross-linking time is 20-40 minutes. The PVA and nanometer inorganic material i.e. PFSA solution, are added to prepare catalytic coating solution The catalytic coating liquid is coated on a hollow fiber pervaporation film and dried at room temperature. 5 wt.% of hydrochloric acid is added with the catalytic coating liquid to prepare functional hollow fiber film.