天然氨基酸作用下2,2-二甲基三亚甲基碳酸酯的开环聚合

Ring Opening Polymerization of 2,2-Methyl Trimethyene Carbonate Initiated by Natural Amino Acid

摘要: 研究了几种中性天然氨基酸存在下2,2-二甲基-三亚甲基环碳酸酯（DTC）的开环聚合反应。1H-NMR和端基滴定分析表明，在聚合反应过程中，DTC上的酰氧键断裂，氨基酸通过氨基接在聚（2,2-二甲基-三亚甲基碳酸酯）链上。3-氨基丙酸、4-氨基丁酸、6-氨基己酸等存在时，DTC的聚合反应也可以发生，但单体的转化率和聚合物的分子量低于天然氨基酸引发的聚合反应。

Abstract: Ring opening polymerization of 2,2-methyl trimethyene carbonate (DTC) in the presence of neutral amino acids was studied in detail. 1H-NMR and titration demonstrate that during the reaction, the acyloxygen bonds in DTC molecule rupture and amino groups incorporate into the PDTC. Ring opening polymerizations of DTC in the presence of 3-amino propionic acid, 4-amino butyric acid, and 6-amino caproic acid also can take place. DTC conversion and molecular weight of PDTC are less than those with natural amino acids.