REGIMES OF POLYMER ADSORPTION-DESORPTION KINETICS

被引：15

作者：

DOUGLAS, JF ^{[1
]}

FRANTZ, P ^{[1
]}

JOHNSON, HE ^{[1
]}

SCHNEIDER, HM ^{[1
]}

GRANICK, S ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT MAT SCI & ENGN,URBANA,IL 61801

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1994年 / 86卷

基金：

美国国家科学基金会;

关键词：

ADSORPTION; DESORPTION; KINETICS; POLYMER;

D O I：

10.1016/0927-7757(93)02674-4

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：

We show, and support with experiments, two limiting regimes of polymer adsorption-desorption. When these processes are rate limited by diffusion they are expected to be non-exponential in time and the time constant is inversely proportional to the diffusion coefficient. When these processes are rate limited by the energetics of surface detachment, they are expected to be exponential in time and the time constant is exponential in the molecular weight. This suggests a unifying perspective from which to analyze polymer mobility at surfaces.

引用

页码：251 / 254

页数：4

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[2]

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[3]

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