Effect of γ-Irradiation on the Molecular-Topological Structure of a Copolymer of Tetrafluoroethylene and Perfluoro(propyl vinyl ether)

被引：0
|
作者：
Olkhov, Yu. A. [1 ]
Allayarov, S. R. [1 ]
Tashmetov, M. Yu. [2 ]
Dixon, D. A. [3 ]
机构：
[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia
[2] Acad Sci Uzbek, Inst Nucl Phys, Tashkent 100214, Uzbekistan
[3] Univ Alabama, Dept Chem, Box 870336, Tuscaloosa, AL 35487 USA
来源：
HIGH ENERGY CHEMISTRY | 2017年 / 51卷 / 03期
关键词：
gamma-irradiation; molecular-topological structure; tetrafluoroethylene and perfluoro(propyl vinyl ether) copolymer; THERMOMECHANICAL ANALYSIS; HEXAFLUOROPROPYLENE; PROTONS;
D O I：
10.1134/S0018143917030110
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 molecular-topological structure of a copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether) before and after gamma-irradiation has been studied for the first time. The pseudo-network structure of the copolymer contains an amorphous block and the crystalline segments of macromolecules serve as branching points. After gamma-irradiation to a dose of 15 to 2380 kGy, polyassociative cluster-type entities have appeared in the initial copolymer in place of the crystalline branching points with simultaneous structure amorphization and a decrease in the onset temperature of molecular flow.
引用
收藏
页码：151 / 155
页数：5
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