A catalytic system for ring-opening polymerization of lactones with controllable activity

A ring-opening polymerization and catalytic system technology, applied in the field of active controllable polymerization catalytic system, can solve the problems of low polymer molecular weight, large amount of catalyst, wide molecular weight distribution, etc., and achieve wide substrate applicability, narrow molecular weight distribution, The effect of using less
CN106750227BActive Publication Date: 2019-04-09JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2019-04-09

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Abstract

The invention discloses an activity-controllable catalysis system for catalyzing inner ester ring opening polymerization, and belongs to the technical field of macromolecular synthesis. Inner ester serving as a monomer raw material is subjected to ring opening polymerization under the synergetic catalysis of Lewis acid and Lewis alkali under a condition of no use of a solvent or use of an organic solvent. The activity-controllable catalysis system has the advantages of readily available raw material, convenience for operation, mild reaction condition, quickness, high conversion rate and the like; furthermore, the use amount of a catalyst is small; the molecular weight of an obtained polymer is controllable, and the molecular weight distribution is narrow; the activity-controllable catalysis system realizes activity-controllable polymerization, and can realize copolymerization among different inner esters.
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Description

technical field

[0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to an activity-controllable polymerization catalyst system, which can be applied to the activity-controllable ring-opening polymerization of lactones and the copolymerization between different lactones. Background technique

[0002] Aliphatic polyester is a kind of polymer with good biocompatibility and biodegradability. Because of its structural repeating unit, there are multiple repeating non-polar methylene groups and a polar ester group, so the material is also It has good flexibility and processability, exhibits good mechanical properties, and is widely used in food packaging, plastic films, medical materials and other fields, so it has attracted more and more attention. Therefore, aliphatic polyester has always been a research hotspot in related fields such as chemistry and medical polymer materials.

[0003] At present, the synthesis of aliphatic polyes...

Claims

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