Deposition of latex particles at heterogeneous surfaces

Irreversible adsorption (deposition) of colloid particles at heterogeneous surfaces was studied experimentally. The substrate surfaces of desired heterogeneity were produced by covering mica surfaces by positively charged polystyrene latex particles. Then, deposition kinetics of negatively charged l...

Full description

Saved in:
Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2004-11, Vol.249 (1), p.95-98
Main Authors: Adamczyk, Z., Siwek, B., Jaszczółt, K., Weroński, P.
Format: Article
Language:English
Subjects:
Adsorption of colloids
Colloid adsorption
Heterogeneous surfaces
Irreversible adsorption
Random site adsorption
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Irreversible adsorption (deposition) of colloid particles at heterogeneous surfaces was studied experimentally. The substrate surfaces of desired heterogeneity were produced by covering mica surfaces by positively charged polystyrene latex particles. Then, deposition kinetics of negatively charged latex was studied under diffusion-controlled transport conditions. Particle distributions over surfaces and coverage were quantitatively evaluated using the direct microscope observation technique. Using this method, jamming coverage of colloid particles as a function of the heterogeneity degree (smaller particle coverage) was determined. These experimental data confirmed, in accordance with numerical simulations that the adsorption site multiplicity exerted a pronounced effect on the structure of adsorbed layers and the jamming coverage.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2004.08.057