文献类型：期刊文献

英文题名：HYDROGEN-BONDING AND CRYSTALLIZATION BEHAVIOR OF SEGMENTED POLYURETHANEUREA - EFFECTS OF HARD SEGMENT CONCENTRATION

作者：XIU, YY; ZHANG, ZP; WANG, DN; YING, SK; LI, JX

机构：[1]INST LIMING CHEM TECHNOL,LUOYANG,PEOPLES R CHINA

年份：1992

卷号：33

期号：6

起止页码：1335

外文期刊名：POLYMER

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1992HL43900033)】；

语种：英文

外文关键词：POLYURETHANEUREA; HARD SEGMENT; HYDROGEN BONDING; CRYSTALLIZATION

摘要：I.r. spectroscopy, d.s.c., WAXD and optical microscopy were employed to investigate the differences between hydrogen bonding and crystallization behaviour depending on hard segment concentration in polyether- and polyester-based polyurethaneureas (PUUs). It has been found that the hard segment crystallization behaviour of polyether-based PUU is higher than polyester-based PUU for the same hard segment content. Hydrogen bonding in polyether-based PUU is formed mainly between hard segments, which promotes crystallization of hard segments. Hydrogen bonding in polyester-based PUU is formed mainly between soft and hard segments, which hinders the crystallization of hard segments.