Preparation and reducing-responsive property of a novel functional polyurethane nanoemulsion  

作　　者：He Qin Hong Zhang Xiaoteng Zhou Danfei Gu Lingxiao Li Chengyou Kan 

机构地区：[1]Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China,Tsinghua University

出　　处：《Chinese Chemical Letters》2020年第1期292-294,共3页中国化学快报（英文版）

基　　金：the National Key Research and Development Program of China (No.2017YFD0200704);the National Basic Research Program of China (973 Program,No. 2014CB932202) for the financial supports

摘　　要：As a kind of stimuli-responsive materials,the disulfide-containing material has received a tremendous amount of interest.A novel functional disulfide-containing waterborne polyurethane(DS-WPU)nanoemulsion was prepared via a one-step in situ phase inverse emulsification technique and its reducing-responsive prope rty was investigated using dithiothreitol as the reductant.Results showed that the DS-WPU nanoemulsion had a uniform particle size in nanoscale and a good film-forming characteristic,and the DS-WPU latex film exhibited great responsiveness along with a self-assembled behavior in the reducing environment to form WPU emulsion again,including a long-to-short process of the polymer chains.As a kind of stimuli-responsive materials,the disulfide-containing material has received a tremendous amount of interest.A novel functional disulfide-containing waterborne polyurethane(DS-WPU)nanoemulsion was prepared via a one-step in situ phase inverse emulsification technique and its reducing-responsive prope rty was investigated using dithiothreitol as the reductant.Results showed that the DS-WPU nanoemulsion had a uniform particle size in nanoscale and a good film-forming characteristic,and the DS-WPU latex film exhibited great responsiveness along with a self-assembled behavior in the reducing environment to form WPU emulsion again,including a long-to-short process of the polymer chains.

关 键 词：POLYURETHANE Disulfide bond NANOEMULSION Reducing-responsiveness Self-assembly 

分 类 号：TQ460.1[化学工程—制药化工] TQ316.334