摘要
This work developed the cationic ring opening polymerization of 3 methyl 3 hydroxymethyleneoxetane initiated by BF 3·OEt 2 directly. The resulted polymer was easily dissolved in polar solvents such as CH 3OH, C 2H 5OH, DMSO and N methyl pyrrolidone, but not dissolved in water, tetrahydrofuran and other non polar solvents. The TGA study of sample 1 indicates that the polymer starts to pyrolyze at 360 ℃. There is a melting endotherm at 125.9 ℃ in the DSC curve of sample 1, and the melting peak enlarged with decreasing the amount of catalyst added, which means that sample 1 is essentially linear, and with increasing the amount of catalyst the resulted polymer becomes slightly branched.
This work developed the cationic ring opening polymerization of 3 methyl 3 hydroxymethyleneoxetane initiated by BF 3·OEt 2 directly. The resulted polymer was easily dissolved in polar solvents such as CH 3OH, C 2H 5OH, DMSO and N methyl pyrrolidone, but not dissolved in water, tetrahydrofuran and other non polar solvents. The TGA study of sample 1 indicates that the polymer starts to pyrolyze at 360 ℃. There is a melting endotherm at 125.9 ℃ in the DSC curve of sample 1, and the melting peak enlarged with decreasing the amount of catalyst added, which means that sample 1 is essentially linear, and with increasing the amount of catalyst the resulted polymer becomes slightly branched.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第11期1815-1816,共2页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
甲基
氧杂丁环甲醇
开环聚合
阳离子
聚醚多元醇
Methyl 3 hydroxymethyleneoxetane, Ring opening polymerization, Characterization
