Biodegradable polyester material and preparation method and application thereof, carrier material and preparation method thereof

The invention provides a biodegradable polyester material and a preparation method and application thereof, a carrier material and a preparation method thereof, and belongs to the technical field of carrier materials. According to the invention, dimethyl terephthalate and polycaprolactone are used as monomers to synthesize the polyester material; the prepared polyester material contains polycaprolactone and a rigid aromatic ring structure of a polyester structure, the aromatic ring structure can improve the overall strength, impact performance, heat resistance and the like of the material, andthe open-loop polycaprolactone chain structure in the transesterification process is good in flexibility and can be completely degraded under natural conditions; furthermore, the prepared polyester material integrates the performance advantages of two reaction monomers (dimethyl terephthalate and polycaprolactone); the elongation at break of the polyester material is obviously improved, the heatresistance is obviously im