文献类型：期刊文献

英文题名：Polyurethane-acrylate hybrid latexes from miniemulsion polymerization: effect of endgroups on structure and properties

作者：Wang, Chunpeng[1] Chu, Fuxiang[1] Jin, Liwei[1] Lin, Mingtao[1] Xu, Yuzhi[1] Guyot, Alain[2]

第一作者：王春鹏

通信作者：Chu, FX[1]|[a0005728d87cb2daf502d]储富祥;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]CPE Lyon, CNRS LCPP, F-69616 Villeurbanne, France

年份：2009

卷号：20

期号：3

起止页码：319-326

外文期刊名：POLYMERS FOR ADVANCED TECHNOLOGIES

收录：;EI(收录号：20092712170223);Scopus(收录号：2-s2.0-67649422317);WOS:【SCI-EXPANDED(收录号:WOS:000264015300026)】；

基金：The support of both the 948 programs (2005-4-70; 2006-4-C03) and the National Science Fund for Distinguished Young Scholars of China (30325031) is gratefully acknowledged.

语种：英文

外文关键词：hybrid latexes; acrylic copolymers; polyurethane; miniemulsion polymerization; structure; properties

摘要：Polyurethanes (PUs) were prepared by condensation of isophorone diisocyanate and polypropylene glycol (PPG) using butane diol as a chain extender. Methoxy or methacrylic endgroups of PUs were obtained upon reacting the residual isocyanate group (NCO) moiety with either methanol or hydroxyethylmethacrylate [HEMA). The resulted PUs were dissolved in mixtures of acrylic monomers, and then the miniemulsion polymerization was conducted. These PUs were quite efficient hydrophobes for polyurethane (PU)-acrylate hybrid miniemulsion polymerization. It was also demonstrated from the results of differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) that the microphase separation of soft and hard phase of PUs in hybrid latexes was more significant than that of original PUs. The PU containing the methacrylic endgroup was almost fully cross-linked during miniemulsion polymerization, resulting in less hard-hard segment of PU hydrogen bond in the hybrid polymer. Some specific morphologies were also discussed from transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The mechanical properties of these films were studied from the strain-stress curves. Copyright (C) 2008 John Wiley & Sons, Ltd.