文献类型：期刊文献

英文题名：Effect of ionic group on the behaviour of polyurethaneurea emulsion

作者：Bao, Hua[1]; Zhang, Zhiping[1]; Ying, Shengkang[1]

机构：[1]E CHINA UNIV SCI & TECHNOL,INST MAT SCI & ENGN,SHANGHAI 200237,PEOPLES R CHINA

年份：1996

卷号：37

期号：13

起止页码：2751

外文期刊名：POLYMER

收录：;EI(收录号：1996373251924);WOS:【SCI-EXPANDED(收录号:WOS:A1996UT17500022)】；

语种：英文

外文关键词：polyurethaneurea; ionic group; 2-methyl-1,3-propane diol

摘要：A novel linear polyurethaneurea emulsion was synthesized from poly(propylene oxide) diol, toluene diisocyanate, dimethylol propionic acid, 2-methyl-1,3-propane diol and ethylenediamine. The effect of the fraction of and the distribution of ionic group on the properties of polyurethaneurea emulsion was investigated by infrared spectroscopy (i.r.), differential scanning calorimetry (d.s.c.), transmission electron microscopy (TEM), a rotary viscometer, etc. In polyurethaneurea investigated, hydrogen-bonds existed not only in the hard segment but also in the soft segment. With increasing the fraction of ionic groups, microphase separation was enhanced and the polyurethaneurea emulsion viscosity increased. In addition, the synthetic method has a profound effect on the distribution of ionic groups, and the emulsion having well-distributed ionic groups is more stable in storage. Copyright (C) 1996 Elsevier Science Ltd.