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

共 50 条

[31] Free radicals, aging and low temperature
Philipp, E.
[J]. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY, 2007, 148 : S61 - S61
[32] Insight into the low-temperature oxidation of dimethylamine radicals
Shang, Yanlei
Ning, Hongbo
Shi, Jinchun
Luo, Sheng-Nian
[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2021, 38 (01) : 853 - 860
[33] STRUCTURE OF RADICALS IN GLYCINE STABILIZED AT LOW-TEMPERATURE
TESLENKO, VV
[J]. JOURNAL OF STRUCTURAL CHEMISTRY, 1976, 17 (02) : 232 - 237
[34] FORMATION OF FREE RADICALS DURING MACHINING AND FRACTURE OF POLYMERS
BACKMAN, DK
DEVRIES, KL
[J]. JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY, 1969, 7 (8PA1): : 2125 - &
[35] PHOTORADIATIVE PROCESSES OF THE FORMATION OF FREE-RADICALS IN POLYMERS
ZHDANOV, GS
OSIPOV, VP
SKVORTSOV, VG
MILINCHUK, VK
[J]. VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1979, 21 (01): : 188 - 194
[36] Detection of free radicals in low-temperature gas-grain reactions of astrophysical interest
Zhitnikov, RA
Dmitriev, YA
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 386 (03) : 1129 - 1138
[37] Fluorination and its Effects on Electrocatalysts for Low-Temperature Fuel Cells
Chatenet, Marian
Berthon-Fabry, Sandrine
Ahmad, Yasser
Guerin, Katia
Colin, Marie
Farhat, Hani
Frezet, Lawrence
Zhang, Gaixia
Dubois, Marc
[J]. ADVANCED ENERGY MATERIALS, 2023, 13 (15)
[38] LOW-TEMPERATURE FLUORINATION OF SULFUR-COMPOUNDS WITH ELEMENTAL FLUORINE
PADMA, DK
BHAT, VS
MURTHY, ARV
[J]. JOURNAL OF FLUORINE CHEMISTRY, 1982, 21 (01) : 40 - 40
[39] LOW-TEMPERATURE FLUORINATION OF SOME NONMETALS AND NONMETAL COMPOUNDS WITH FLUORINE
PADMA, DK
KALBANDKERI, RG
SURESH, BS
BHAT, VS
[J]. INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 1991, 30 (02): : 172 - 176
[40] Low-temperature oxidation of free radicals and functional groups in coal during the extraction of coalbed methane
Xu, Qin
Yang, Shengqiang
Hu, Xincheng
Song, Wanxin
Cai, Jiawen
Zhou, Buzhuang
[J]. FUEL, 2019, 239 : 429 - 436

← 1 2 3 4 5 →