A controllable synthesis method of highly stereoregular polymethyl methacrylate

Abstract

A controllable synthesis method of highly stereoregular polymethyl methacrylate, comprising the following steps: Step 1: using amylose as a matrix raw material, and using 3,5-dimethylphenylisocyanate as a derivatization reagent, by The traditional esterification method synthesizes the helical polymer amylose-three (3,5-dimethylphenylcarbamate); step 2: the synthesized amylose-three (3,5- Dimethylphenylcarbamate) was added as an additive to the radical polymerization reaction of methyl methacrylate, and its regular helical structure was used to induce the radical polymerization behavior of methyl methacrylate, and finally prepared a highly stable Stereoregular polymethyl methacrylate; the invention has clear and feasible synthetic route, mature process, simple operation, few conditions to be controlled and easy realization, and can be used for large-scale batch production.

Description

technical field [0001] The invention belongs to the field of polymer science and technology, and relates to a controllable synthesis method of methyl methacrylate, in particular to a controllable synthesis method of highly stereoregular polymethyl methacrylate. Background technique [0002] The polymerization or copolymerization of most ethylenic monomers adopts free radical polymerization, but due to the uncontrollability of the reaction process, most of the obtained are random polymers, and the stereoregularity of polymers in actual production is closely related to the performance of materials. relevant. At present, there are many reports on the use of ionic polymerization or coordination polymerization to achieve stereocontrol, but there are few related studies on free radical polymerization and its stereocontrol behavior. In addition, due to the lack of conjugated substituents in vinyl esters, the high reactivity and low stability of the propagating group, chain transfe...

AI Technical Summary

Problems solved by technology

At present, there are many reports on the use of ionic polymerization or coordination polymerization to achieve stereocontrol, but there are few related studies on free radical polymerization and its stereocontrol behavior.

In addition, due to the lack of conjugated substituents in vinyl esters, the high reactivity and low stability of the propagating group, chain transfer and side reactions are difficult to control, adjusting the stereochemical configuration is a great challenge in synthetic polymer chemistry, and currently most Research focuses on how to improve the syndiotacticity, and there are few reports on improving the isotacticity of polymers

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