| Issue |
Europhys. Lett.
Volume 63, Number 6, September 2003
|
|
|---|---|---|
| Page(s) | 895 - 901 | |
| Section | Interdisciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i2003-00602-4 | |
| Published online | 01 November 2003 | |
The slowly formed Guiselin brush
Department of Chemical Engineering, Columbia University - New York, NY 10027, USA
Received:
6
March
2003
Accepted:
8
July
2003
We study polymer layers formed by irreversible adsorption from a
polymer melt. Our theory describes an experiment which is a
“slow” version of that proposed by Guiselin (Europhys.
Lett., 17(1992) 225) who considered instantaneously
irreversibly adsorbing chains and predicted a universal density
profile of the layer after swelling with solvent to produce the
“Guiselin brush”. Here we ask what happens when adsorption is
not instantaneous. The classic example is chemisorption.
In this case the brush is formed slowly and the final structure
depends on the experiment's duration, 
. We find the
swollen layer consists of an inner region of thickness 
with approximately constant density and an outer
region extending up to height 
which has the
same density decay 
as for the Guiselin case.
PACS: 82.35.-x – Polymers: properties; reactions; polymerization / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 68.08.-p – Liquid-solid interfaces
© EDP Sciences, 2003
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