THERMALLY-INDUCED DOMAIN GROWTH IN FATTY-ACID ESTER MONOLAYERS

被引:27
作者
GUTBERLET, T
VOLLHARDT, D
机构
[1] MAX PLANCK INST KOLLOID & GRENZFLACHENFORSCH, D-12489 BERLIN, GERMANY
[2] FREE UNIV BERLIN, INST KRISTALLOG, W-1000 BERLIN, GERMANY
关键词
MONOLAYERS; LONG-CHAIN FATTY ACID ESTERS; MONOLAYER MORPHOLOGY; DOMAIN GROWTH; CELLULAR PATTERNS; DISSIPATIVE STRUCTURES;
D O I
10.1006/jcis.1995.1343
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
Monolayers of long-chain fatty acid esters evolve irregularly shaped morphological structures depending on the existing conditions of spreading. A reproducible evolution of defined circular condensed phase domains is achieved by a heating-recooling cycle at a fixed area per molecule in the surface pressure region of about 0 mN m(-1). The mechanism of domain growth is qualitatively related to a nucleation-growth mechanism. Besides the condensed phase domains that coexist with the fluid phase of low density, random cellular structures appear in it which evolve to a two-dimensional network of boundary lines under the influence of the temperature gradient. The cellular patterns within this phase of low density are accounted for by dissipative structures induced by temperature gradients. (C) 1995 Academic Press, Inc.
引用
收藏
页码:429 / 435
页数:7
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