Critical length and time scales during the initial stages of nucleation in polymer blends

被引：26

作者：

Lefebvre, AA ^{[1
]}

Lee, JH

Balsara, NP

Hammouda, B

机构：

[1] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA

[2] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2002年 / 116卷 / 12期

关键词：

D O I：

10.1063/1.1463056

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：

The initial stages of nucleation during liquid-liquid phase separation in polymer mixtures were studied by time-resolved small angle neutron scattering. The time required for nucleation vanishes exponentially as the stability limit (spinodal) is approached. The critical nucleus size decreases monotonically with increasing quench depth and remains finite at the spinodal. Our data differ qualitatively from theoretical predictions. (C) 2002 American Institute of Physics.

引用

页码：4777 / 4781

页数：5

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