Polyester-polyethylene glycol block copolymer, preparation method therefor, and use thereof

Abstract

The present disclosure relates to the technical field of polymer materials, and particularly to a polyester-polyethylene glycol block copolymer, a preparation method therefor, and use thereof. The preparation method for the polyester-polyethylene glycol block copolymer includes a step of performing a melt ring-opening polymerization reaction on hydroxyl-containing polyethylene glycol and cyclic ester monomer, with stannous octoate as catalyst, where in the melt ring-opening polymerization, an amount of the stannous octoate used ranges from 0.01 wt % to 0.047 wt % of a total amount of the hydroxyl-containing polyethylene glycol and the cyclic ester monomer as raw materials; and a temperature of the melt ring-opening polymerization reaction ranges from 100° C. to 140° C., and a reaction time ranges from 48 h to 150 h.

Dependencies are inferred from the claim text.