Synthesis of Self-Healing Polymers by Radical Controlled Polymerization

被引：0

作者：

Cherkasov, S. A. ^{[1
,2
]}

V. Edeleva, M. ^{[2
]}

Marque, S. R. A. ^{[2
,3
]}

Bagryanskaya, E. G. ^{[2
]}

机构：

[1] Novosibirsk State Univ, Novosibirsk, Russia

[2] Russian Acad Sci, Vorozhtsov Novosibirsk Inst Organ Chem, Siberian Branch, Novosibirsk, Russia

[3] Univ Aix Marseille, Marseille, France

来源：

CHEMISTRY FOR SUSTAINABLE DEVELOPMENT | 2022年 / 30卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

radical controlled polymerization; self -healing polymers; complexation; alkoxyamines; EPR; NMR; ON BOND HOMOLYSIS;

D O I：

10.15372/CSD2022429

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The formation of a complex of magnesium and 4-ethylterpiridyl-(N-tert-butyl-N-(1-diethylphosphone-2,2-dimethylpropyl))-nitroxide alkoxyamine (SG1-tpy) was investigated by means of NMR spectroscopy. The stoichi-ometry of the complex was determined by constructing the Job's plot. The homolysis rate constant of the alkoxy-amine used was determined by means of EPR spectroscopy, and the activation energy was estimated. Polystyrene was obtained by radical controlled polymerization, and its molecular weight characteristics were studied by gel -permeation chromatography. When magnesium trifluoroacetate is added to the polymer solution, the molecular weight of the polymer increases, which indicates the formation of the complex. Polystyrene was also synthesized using the complex form of the initiator. It is shown that all the obtained polymers are narrowly dispersed, poly-dispersity is less than 1.5.

引用

页码：660 / 667

页数：8

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