摘要
DL乳酸在催化作用下,采用共沸精馏聚合耦合装置,直接缩合聚合制得低分子量聚DL乳酸.采用IR、1HNMR、GPC等测试手段对聚合物进行了表征,研究了反应条件(温度、时间等)对聚合物产率及分子量的影响.
With SnCl 2·2H 2O as catalyst,low molecule weight poly (DL lactic acid) was synthesized using the coupling apparatus of azeotropic dehydration and condensation polymerization.Poly (DL lactic acid) was characterized by IR, 1 HNMR and GPC.The influence of the polymerization conditions on the yields and the molecule weight of the synthesized poly (DL lactic acid) were investigated.
出处
《天津大学学报(自然科学与工程技术版)》
EI
CAS
CSCD
2000年第1期48-50,共3页
Journal of Tianjin University:Science and Technology
基金
国家自然科学基金! (2 97760 35)
国家博士后科学基金! (81 1 1 )
关键词
聚乳酸
缩合聚合
共沸精馏
直接缩合法
合成
poly (DL lactic acid)
condensation polymerization
azeotropic dehydration