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Regimes of polymer adsorption—desorption kinetics

✍ Scribed by Jack F. Douglas; Peter Frantz; Harry E. Johnson; Hildegard M. Schneider; Steve Granick

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
303 KB
Volume
86
Category
Article
ISSN
0927-7757

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✦ Synopsis

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.

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