| abstract |
The invention provides a poly(L-glutamic acid) homopolymer which has a repeating unit disclosed as formula (I), and the number-average molecular weight of the poly(L-glutamic acid) homopolymer is 2000-40000. The invention also provides a preparation method of the poly(L-glutamic acid) homopolymer in the technical scheme above, which comprises the following step: polymerizing gamma-propinyl-L-glutamate-N-endo-carboxylic anhydride under the action of primary amine initiator to obtain the poly(L-glutamic acid) homopolymer. The invention provides a poly(L-glutamic acid) random copolymer, of which the structure is disclosed as formula (II) and the number-average molecular weight is 2000-80000. The invention also provides a preparation method of the poly(L-glutamic acid) random copolymer. The invention also provides a preparation method of a poly(L-glutamic acid) graft copolymer. |