▎ 摘　　要

Poly(propylene carbonate phthalate) grafted onto graphene oxide (PPCPA-g-GO) was prepared by in situ polymerization with propylene oxide (PO), phthalic anhydride (PA), carbon dioxide (CO2), and well-dispersed graphene oxide (GO) using a highly active Zn-Fe double metal cyanide (DMC) catalyst. The PPCPA-g-GO composites were characterized by FTIR, Raman spectra, SEM, TEM, and TGA. FTIR and Raman spectra indicated that PPCPA chains were successfully grafted onto GO sheets. SEM and TEM showed that PPCPA-g-GO were seriously wrinkled and incoherently stacked. From TGA-DTG, the quantity of grafted PPCPA chains on GO sheets was about 41% in weight, and the thermal stability of PPCPA-g-GO composites was improved effectively in comparison with that of PPCPA.