Nanoparticles based on poly(2-amino-1,3-propanediol carbonic ester-co-lactide)-g- PEG(P(LA-co- CA)-mPEG) were prepared by using the emulsion solvent diffusion method.The copolymer of P(LA-co-CA) was prepared by using ring-opening polymerization with diethylzinc(ZnEt2) as initiator,and then benzyl oxygen group was taken off to obtain P(LA-co-CA).With the anticancer drug,docetaxel(DTX),as a model drug,the morphology of nanoparticles was characterized with scanning electron microscopy(SEM) and the size and siz...