Identification of finite shear-elasticity in the liquid state of molecular and polymeric glass-formers

被引：21

作者：

Noirez, L. ^{[1
]}

Mendil-Jakani, H. ^{[1
]}

Baroni, P. ^{[1
]}

机构：

[1] CE Saclay, CNRS, CEA, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

来源：

PHILOSOPHICAL MAGAZINE | 2011年 / 91卷 / 13-15期

关键词：

glass formers; liquid state; elastic properties; LIGHT-SCATTERING; TERPHENYL; ORTHOTERPHENYL; VISCOSITY; BIPHENYL; DYNAMICS; RANGE;

D O I：

10.1080/14786435.2010.536176

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Finite shear elasticity has been identified in the liquid state. The study is expanded to a van der Waal's molecular glass-former, o-terphenyl, and to an ordinary polymer melt, polybutylacrylate, as a function of their molecular weight. These fluids exhibit shear elasticity at the sub-millimetre scale and far above any phase transition. This macroscopic property challenges the conventional terminal relaxation modes (alpha-process or terminal viscoelastic times (reptation)) in terms of individual molecular process.

引用

页码：1977 / 1986

页数：10

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