Modeling of the Isobaric and Isothermal Glass Transitions of Polystyrene

被引：23

作者：

Grassia, Luigi ^{[1
]}

Pastore Carbone, Maria Giovanna ^{[2
]}

D'Amore, Alberto ^{[1
]}

机构：

[1] Univ Naples 2, Dept Aerosp & Mech Engn, Aversa, Caserta, Italy

[2] Univ Naples Federico II, Dept Mat & Prod Engn, Naples, Italy

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2011年 / 122卷 / 06期

关键词：

amorphous; glass transition; relaxation; STRUCTURAL RELAXATION; SUPERCOOLED LIQUIDS; PRESSURE; POLYMERS; DYNAMICS; RECOVERY; VOLUME; MELTS;

D O I：

10.1002/app.34789

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The scaling law for relaxation times (tau's) recently proposed by Casalini and Roland was used in the framework of Kovacs, Aklonis, Hutchinson, and Ramos phenomenological theory. With this approach, it was shown that both the isobaric and the isothermal glass transitions of polystyrene can be reliably predicted with only two fitting parameters, namely, tau in the reference state and the fractional exponent that describes the dispersion of the alpha relaxation. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 3752-3757, 2011

引用

页码：3752 / 3757

页数：6

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