Dynamics of alpha-relaxation and structure formation during crystallization process of polymers: Dielectric relaxation and small-angle X-ray scattering on PET

被引：0
|
作者：
Fukao, K
Miyamoto, Y
机构：
来源：
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT | 1997年 / 126期
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O4 [物理学];
学科分类号：
0702 ;
摘要：
We made time-resolved simultaneous measurements of dielectric relaxation and small-angle X-ray scattering (SAXS) on poly (ethylene terephthalate) (PET) in order to investigate the relationship between the alpha-relaxation and the structure formation during the crystallization process. We found that the alpha-relaxation changes to the alpha'-relaxation via a coexistent state of the two relaxations. The change in dynamics of alpha-relaxation occurs before the formation of higher-ordered structure observed by SAXS. The results suggest the existence of a precursor phenomenon in polymer crystallization, which is related to the dynamics in the amorphous phase.
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页码：219 / 222
页数：4
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