The role of temperature and density on the glass-transition dynamics of glass formers

被引：56
作者：
Floudas, G
Mpoukouvalas, K
Papadopoulos, P
机构：
[1] Univ Ioannina, Dept Phys, Ioannina 45110, Greece
[2] Univ Ioannina, Inst Biomed Res, Fdn Res & Technol Hellas, Ioannina 45110, Greece
来源：
JOURNAL OF CHEMICAL PHYSICS | 2006年 / 124卷 / 07期
关键词：
D O I：
10.1063/1.2170074
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：
A correlation between the monomeric volume and the dynamic quantity E-V(*)/H-*, used to provide a quantitative measure of the role of temperature and density on the dynamics, is demonstrated for a series of polymers and glass-forming liquids. We show that monomeric volume and local packing play a key role in controlling the value of this ratio and thus the dynamics associated with the glass temperature.
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页数：5
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