✦ LIBER ✦

Dynamic Surface Tension and Adsorption/Desorption Kinetics for Mixtures on Planar Surfaces: I. Under Nonflow Conditions

✍ Scribed by Nadezhda L. Filippova

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 176 KB
Volume: 213
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.1999.6173

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✦ Synopsis

The adsorption/desorption kinetics for individual polymers and polymer mixtures of the water-soluble associative polymers with molecular weights of 12, 62, and 100 kg/mol onto SiO 2 planar substrate have been studied by ellipsometry at room temperature under nonflow conditions. Equations were derived to predict behaviors of the adsorption/desorption kinetics and dynamic surface tension onto planar surfaces for any times. It is shown that the desorption kinetics of the water-soluble associative polymers onto planar SiO 2 surface is an irreversible process due to strong interaction between polymer molecules and an interface.

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