Carbon-carbon torsional barriers driving the fast dynamics in glass-forming polymers

被引：45

作者：

Colmenero, J ^{[1
]}

Arbe, A ^{[1
]}

机构：

[1] Univ Basque Country, Dept Fis Mat, San Sebastian 20080, Spain

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.57.13508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By considering neutron-scattering data of 17 glass-forming polymers, an experimental correlation is found between the temperature range T-f, at which the fast dynamics sets in, and the carbon-carbon torsional barrier in the polymer chain. This model-independent result, which suggests an intramolecular interpretation of the fast dynamics in glass-forming polymers, is easily explained in the framework of a model which relates the fast dynamics to the short-time regime of the segmental dynamics (alpha relaxation).

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页码：13508 / 13513

页数：6

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