A SIMPLE KINETIC-MODEL OF POLYMER ADSORPTION AND DESORPTION

被引：162

作者：

DOUGLAS, JF ^{[1
]}

JOHNSON, HE ^{[1
]}

GRANICK, S ^{[1
]}

机构：

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

来源：

SCIENCE | 1993年 / 262卷 / 5142期

关键词：

D O I：

10.1126/science.262.5142.2010

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A model of the desorption and adsorption of a polymer layer at a planar surface indicates a transition from exponential kinetics at high temperatures to nonexponential kinetics (stretched exponential with index one-half) at lower temperatures where these processes are diffusion-limited. Measurements of polystyrene desorption through polyisoprene over-layers show this predicted transition. Corroborative results are obtained for polystyrene desorption through polymethylmethacrylate overlayers. This identification of two distinct kinetic regimes suggests a unifying perspective from which to analyze polymer and biopolymer mobility at surfaces.

引用

页码：2010 / 2012

页数：3

共 29 条

[1] DYNAMICS OF RELAXATION AT STRONGLY INTERACTING POLYMER-SOLID INTERFACES - EFFECTS OF CHAIN ARCHITECTURE
ADRIANI, PM
CHAKRABORTY, AK
[J]. JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (05) : 4263 - 4274
[2] DEFECT-DIFFUSION MODELS OF DIELECTRIC-RELAXATION
BORDEWIJK, P
[J]. CHEMICAL PHYSICS LETTERS, 1975, 32 (03) : 592 - 596
[3] Bronsted J. N., 1931, Z PHYS CHEM A BODENS, P257
[4] INFLUENCE OF THE SPATIAL-DISTRIBUTION OF REACTIVE CENTERS ON DIFFUSION CONTROLLED REACTIONS
BURLATSKY, SF
IVANOV, OF
DEUTCH, JM
[J]. JOURNAL OF CHEMICAL PHYSICS, 1992, 97 (01) : 156 - 161
[5] Carslaw H. S., 1959, CONDUCTION HEAT SOLI
[6] CARSLAW HS, 1943, P R SOC EDINBURGH, V61, P223
[7] GLASSY RELAXATION AT POLYMER SOLID INTERFACES
CHAKRABORTY, AK
ADRIANI, PM
[J]. MACROMOLECULES, 1992, 25 (09) : 2470 - 2473
[8] CHRISTMANN K, 1991, SURFACE PHYSICAL CHE
[9] ON THE KINETICS AND REVERSIBILITY OF POLYMER ADSORPTION
COSGROVE, T
FERGIEWOODS, JW
[J]. COLLOIDS AND SURFACES, 1987, 25 (01): : 91 - 99
[10] DEGENNES PG, 1985, CR ACAD SCI II, V301, P1399

← 1 2 3 →