THE RADIATION-CHEMISTRY OF PERFLUORINATED ETHERS

被引：13

作者：

FAUCITANO, A ^{[1
]}

BUTTAFAVA, A ^{[1
]}

PATRUNO, V ^{[1
]}

GUARDA, PA ^{[1
]}

MARCHIONNI, G ^{[1
]}

机构：

[1] CTR RIC & SVILUPPO AUSIMONT,MILAN,ITALY

来源：

RADIATION PHYSICS AND CHEMISTRY | 1995年 / 45卷 / 01期

关键词：

D O I：

10.1016/0969-806X(94)E0019-F

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The investigation on the radiation chemistry of the perfluoropolyethers carried on through the analysis of the free radicals intermediates, of the structural changes in the oligomers chains and with the support of M.O. calculations has afforded information on the major features of the mechanism of radiolysis, The main radiolytic process is chain degradation by C-C and C-O bond rupture. Evidence of a minor participation of C-F bond scissions have been obtained in the case of poly(perfluorotrimethylene oxide) PF3MO and poly(perfluoroethylene-perfluoromethylene oxide) PFEMO. The nature of the radicals intermediates and the structure of the novel units produced in the oligomer chains fit a radiolysis mechanism where both the ionic and excitation paths seem to be operative giving rise to complex sequence of radical reactions. The structure and possible reaction modes of the molecular cation and anion radicals are discussed on the basis of PM3 semi-empirical M.O. calculations.

引用

页码：23 / 30

页数：8

共 22 条

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