Mobility of polyethylene chains in the orthorhombic and hexagonal phases investigated by NMR

被引：26
作者：
de Langen, M [1 ]
Prins, KO [1 ]
机构：
[1] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
来源：
CHEMICAL PHYSICS LETTERS | 1999年 / 299卷 / 02期
关键词：
D O I：
10.1016/S0009-2614(98)01250-0
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：
This is a report on a study of polyethylene, in and near the hexagonal phase, using NMR. From proton and deuteron Nh IR Lineshapes and spin-lattice relaxation rates, we determine the rate and type of motion of the polyethylene chains both in the orthorhombic and hexagonal phase. in the hexagonal phase, we find fast axial local motion in combination with fast chain diffusion, which is in marked contrast to the more restricted motion we observe in the orthorhombic phase. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：195 / 200
页数：6
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