POLYMERS AT AN INTERFACE - A SIMPLIFIED VIEW
POLYMERS AT AN INTERFACE - A SIMPLIFIED VIEW
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DOI：
10.1016/0001-8686(87)85003-0
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发表时间：
1987-07-01
影响因子：
15.6
通讯作者：
DEGENNES, PG
中科院分区：
文献类型：
--
作者：
DEGENNES, PG
给出了吸附在界面上的聚合物的基本描述。讨论仅限于线性，柔性，中性链在良好的溶剂。终端连接的系统，在“刷”制度，有微弱的波动，因此服从于一个简单的平均场描述。另一方面，吸附，扩散层有很大的波动，不能在平均场项描述。吸附层具有一定的自相似结构，这使得最基本的数据（椭圆偏振，流体动力学厚度）的紧凑的解释。最近Auvray和Cotton的中子实验已经最明确地证明了自相似性，这些实验是用可变对比技术在长链上进行的。本文还简要介绍了吸附态和游离态聚合物交换动力学的最新进展。
An elementary description of polymers adsorbed, or terminally attached, at an interface is given. Discussion is restricted to linear, flexible, neutral chains in good solvents. Terminally attached systems, in the “brush” regime, have weak fluctuations and are thus amenable to a simple mean field description. On the other hand, the adsorbed, diffuse layers have large fluctuations and cannot be described in mean field terms. Adsorbed layers have a certain self-similar structure which allows for a compact interpretation of most fundamental data (ellipsometry, hydrodynamic thickness). Self-similarity has been proven most explicitly by recent neutron experiments of Auvray and Cotton which were made on long chains with variable contrast techniques. Recent advances on the kinetics of exchange between adsorbed and free polymer are also briefly described.