Formation of free radicals in the low-temperature fluorination of polymers

被引：20

作者：

Kuzina, SI ^{[1
]}

Kharitonov, AP ^{[1
]}

Moskvin, YL ^{[1
]}

Mikhailov, AI ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST ENERGY PROBLEMS CHEM PHYS BRANCH,CHERNOGOLOVKA 142432,MOSCOW REGION,RUSSIA

来源：

RUSSIAN CHEMICAL BULLETIN | 1996年 / 45卷 / 07期

关键词：

polymers; fluorination; free radicals;

D O I：

10.1007/BF01431798

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The formation of free radicals in the process of direct fluorination of natural and synthetic polymers at temperatures close to 77 K was studied by ESR. The maximum concentrations of radicals (10(17)-5 . 10(18) spin g(-1)) and their complete oxidation were observed in the temperature interval from 77 to 250 K at a fluorine pressure of 30 Torr. The initiation of chain halogenation, which consists of homolytic breaking of chemical bonds to yield free-radical intermediates, was examined in the framework of the multi-center synchronous transitions model.

引用

页码：1623 / 1627

页数：5

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