monomers. Ring-opening homopolymerisation and copolymerisation of the IPTA monomer, derived from l-ascorbic acid, with d,l-lactide have been performed. The polymers were characterised by elemental microanalysis, as well as IR and (1)H and (13)C NMR spectroscopies. GPC was used to estimate product molecular weights, and thermal studies (DSC and TGA) revealed that all the polymers were amorphous, being
1-
抗坏血酸和d-
异抗坏血酸已被用作制备(3R,4'S)-3-(2',2'-二甲基-1',3'-二
氧戊环-4'-基)-的原料1,4-
二恶烷-2,5-二酮(I
PTA),(3R和S,4'S,6R)-3-甲基-6-(2',2'-二甲基-1',3'-二
氧戊环-4' -yl)-1,4-dioxane-2,5-dione(I
PTP)和(3R,4'R)-3-(2',2'-二甲基-1',3'-dioxolan-4'-yl )-1,4-
二恶烷-2,5-二酮(I
PEA),三种新型的1,4-
二恶烷-2,5-二酮型单体。已经进行了衍生自1-
抗坏血酸的I
PTA单体与d,1-
丙交酯的开环均聚和共聚。通过元素微分析,IR和(1)H和(13)C NMR光谱对聚合物进行表征。
GPC用于估算产品分子量,