Aliphatic polycarbonates (APCs), as a class of biodegradable polymers with excellent properties, have good biocompatibility and mechanical properties, and have wide application prospects in the fields of degradable plastics, specialty polyurethanes and biomedicine.

The traditional process of synthesizing APCs materials by phosgene method has been basically eliminated due to the highly toxic raw material phosgene and the by-product of a large amount of hydrogen chloride, which causes serious corrosion to equipment and serious pollution. Clean processes for the synthesis of APCs materials by non-phosgene methods, such as ring-opening polymerization of cyclic carbonates, addition polymerization of epoxides and CO2, and transesterification of glycols and carbonates, have attracted widespread attention in the industry. The synthesis process of cyclic carbonate monomers is cumbersome and costly, and is difficult to promote in industrial production. Compared with the CO2/epoxide direct copolymerization method, the process of synthesizing APCs from carbonate using CO2 as raw material has the advantages of simple process, high catalytic efficiency and controllable structure of target APCs, so it has attracted widespread attention from researchers.

There are few reports at home and abroad on the preparation of high molecular weight biodegradable APC materials by transesterification between DPC and aliphatic glycols. Taking into account the industrial application prospects and the development trend of green preparation, the transesterification method between DPC and aliphatic glycols is a method with industrial prospects.