摘要
用溶液聚合法合成了含有五种不同扩链剂,软段为胺端基聚环氧丙烷的聚脲氨酯和聚脲。用示差扫描量热计法得热容变Δc_(?),动态力学温度谱等数据,说明不同扩链剂对嵌段共聚物性质及微相分离的影响。
A series of amine-terminated polypropylene-oxide based thermoplastic polyureas were synthesized with a two-step solution polymerization. The properties and the extent of phase separation,as determined by the heat capacity change △CP across the soft-segment Tgs from differential scanning calorimetry, and the dynamic-mechanical spectra, were obtained with various chain extender.
出处
《烟台大学学报(自然科学与工程版)》
CAS
1993年第2期21-25,共5页
Journal of Yantai University(Natural Science and Engineering Edition)
关键词
聚脲氨酯
聚脲
扩链剂
微相分离
Polyureurethane. Polyurea. Urethane linkage. Urea linkage. Chain extender. Phase separation.