Preparation method of biodegradable polybutylene succinate

Abstract

The invention provides a preparation method of biodegradable polybutylene succinate (PBS). The preparation method of the biodegradable polybutylene succinate takes a succinate compound and 1, 4-butanediol as polymerizing monomers, adopts an efficient compound catalyst system and comprises the following steps: performing transesterification reaction to obtain a PBS (polybutylene succinate) oligomer first and then performing melting polycondensation reaction to obtain a PBS polymer with a high molecular weight and good color and luster. By the preparation method, PBS degradable plastic with excellent color and luster and a high molecular weight can be prepared without using a chain extender, and meanwhile industrial production can be realized.

Description

technical field

[0001] The invention belongs to the technical field of preparing biodegradable aliphatic polyester by condensation polymerization, and particularly relates to a kind of succinate compound and 1,4-butanediol as polymerization monomers, adopting a high-efficiency composite catalytic system, through ester A method for preparing biodegradable polybutylene succinate (PBS) with high molecular weight and good product color through two-stage process route of exchange and polycondensation reaction. Background technique

[0002] Among biodegradable aliphatic polyesters, polybutylene succinate (PBS) has excellent comprehensive performance and biodegradability, comparable to traditional polyolefin materials, and is the most promising alternative to traditional polyolefin plastics However, compared with polyolefin plastics, PBS still has certain gaps and problems, such as low molecular weight and poor product color, etc., which seriously restrict the wider application ran...