Firstly, biodegradable crosslinking agent having a poly(ethylene glycol) (PEG) central block, extended with poly(D,L-lactide) and terminated with diacrylate, was prepared.

• 摘要先以聚乙二醇(PEG)为中心嵌段，经消旋-丙交酯(D,L-LA)开环扩链，进而用丙烯酸酯封端制备了可生物降解交联剂。