The structural characteristics of copolymers were attested by IR, 1H-NMR, DSC, GPC, CD etc.The results show that products of NCA ring opening polymerization initiated by MPEG-NH2 are block copolymers.

• 利用IR、NMR、DSC等方法对共聚物结构进行了表征，同时利用圆二色光谱(CD)考察了聚合物材料在水溶液中的二级结构。