The structure of polybutadienes and butadiene-acrylonitrile copolymers

被引：0
|
作者：
N. M. Livanova
S. G. Karpova
A. A. Popov
机构：
[1] Russian Academy of Sciences,Emanuel Institute of Biochemical Physics
来源：
Polymer Science Series A | 2009年 / 51卷
关键词：
Tempo; Polymer Science Series; Butadiene; Acrylonitrile; Polybutadiene;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paramagnetic probe method with the use of free radicals of different dimensions (2,2,6,6-tet-ramethyl-1-piperidinyloxy and 4-benzoate-2,2,6,6-tetramethyl-1-piperidinyloxy) has been employed to study the effect of the isomeric composition of butadiene units in polybutadienes and butadiene-acrylonitrile copolymers on the number and dimensions of ordered structures. The nature of density fluctuations and defective regions, that is, the regions in which the radicals are sorbed, has been ascertained. It has been shown that the ordered regions are composed of stereoregular chain fragments, while defective regions are enriched with butadiene isomers different from those present in prevailing amounts.
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页码：979 / 985
页数：6
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