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Valentina
D. Dolzhikova, Yulia G. Bogdanova
Infuence
of adsorption layers of polyelectrolytes on the wetting and modification of
the polystyrene surface
Abstract
Abstract.
The adsorption of cationic and anionic polyelectrolytes
from aqueous solutions on the polystyrene surface was studied by quartz crystal
microbalance and contact angle measurements. It is shown that, despite the
multilayer nature of adsorption, only a monolayer of polyelectrolyte
macromolecules is firmly retained on the polymer surface, and the polystyrene
surface is hydrophilized. It is shown that with complete monolayer filling of
the surface, the degree of modification of the polystyrene surface does not
depend on the nature of the studied polyelectrolytes, and the modifying
monolayers provide the value of the polystyrene/water interfacial energy, which
indicates the potential biocompatibility of the material based on the modified
polystyrene.
Key words: polystyrene, polyelectrolytes, adsorption, quartz crystal
microbalance, wetting, surface energy, biocompatibility
Copyright (C) Chemistry Dept., Moscow State University, 2002
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