摘要
以廉价易得的D,L-乳酸和季戊四醇为原料,采用直接熔融聚合法合成了以季戊四醇为核的星形聚(D,L-乳酸)(3,Mw5200~20100),Tg均低于线形聚(D,L-乳酸)。3的结构经^1H NMR,FT-IR,GPC和XRD表征。
Star-shaped poly ( D, L-lactic acid) (3, Mw 5 200 - 20 100) was synthesized by directly melt polycondensation from D, L-lactic acid using pentaerythritol as a core. The structure of 3 was characterized by ^1H NMR, FT-IR, GPC and XRD. The results showed that Tg of 3 was lower than that of linear poly( D, L-lactic acid).
出处
《合成化学》
CAS
CSCD
2008年第2期166-169,共4页
Chinese Journal of Synthetic Chemistry
基金
广东省自然科学基金博士科研启动基金资助项目(5300082)
关键词
直接熔融聚合法
星形聚(D
L-乳酸)
季戊四醇
合成
direct melt polyeondensation
star-shaped poly(D,L-lactic acid)
pentaerythritol
synthesis