Microstructures and supramolecular structures of butadiene-nitrile rubbers: Paramagnetic-probe study

被引：11
|
作者：
Livanova, N. M. [1 ]
Karpova, S. G. [1 ]
Popov, A. A. [1 ]
机构：
[1] Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow 119991, Russia
来源：
POLYMER SCIENCE SERIES A | 2011年 / 53卷 / 12期
关键词：
POLYPROPYLENE; PRECIPITATION;
D O I：
10.1134/S0965545X1112008X
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The chain microstructures and supramolecular structures of butadiene-nitrile rubbers are studied by ESR spectroscopy. On the temperature dependences of the rotational mobility (correlation time tau(c)) of paramagnetic probes differing in size (2,2,6,6-tetramethylpiperidine-1-oxyl and 4-benzoate-2,2,6,6-tetramethylpiperidine-1-oxyl), relaxation transitions are observed. It is shown that there is a correlation between the Arrhenius parameters of rotational mobility of radicals and the copolymer composition and that different brands of rubbers differ in microstructure and supramolecular structure.
引用
收藏
页码：1128 / 1134
页数：7
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