PASP-PEG block structure copolymer,comb shaped PASP-PEG block structure copolymer,aspartic acid and glycine,glutamic acid or propalanine copolymer are prepared.

还可以冬氨的侧链进行改性,引入烷烯烃、反应活性高的氨酯、磺功能性团,使其得到更广泛的应用。