Chain motions of alternating ethylene/propylene copolymers studied solid-state 2H NMR

被引：0
|
作者：
Nakajima, T [1 ]
Akiyama, T [1 ]
Furuya, H [1 ]
机构：
[1] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan
来源：
POLYMER JOURNAL | 2001年 / 33卷 / 10期
关键词：
ethylene-propylene copolymer; solid-state H-2 NMR; chain motions; linear copolymer; branched copolymer;
D O I：
10.1295/polymj.33.825
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 motions of two deuterated alternating ethylene-propylene (EP) copolymers were investigated by solid state nuclear magnetic resonance (NMR) measurements. The effect of the branched side group on the molecular motion of the main chain was also evaluated. The branched side chain group influenced the crystallinity and glass transition temperature of the elastomers affecting the motion of the main chain. For linear copolymer reorientation motion of main chain segments occured at temperature below 40°C.
引用
收藏
页码：825 / 829
页数：5
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