Affordable Access

Publisher Website

The aggregation of colloidal particles at the air—water interface

Authors
Journal
Journal of Colloid and Interface Science
0021-9797
Publisher
Elsevier
Publication Date
Volume
152
Issue
1
Identifiers
DOI: 10.1016/0021-9797(92)90021-d

Abstract

Abstract Previous investigators have noted that small particles at a fluid interface may exhibit a special tendency to aggregate. Colloidal dispersions which are stable in the bulk often form a coagulum at the air—liquid surface. Such surface aggregation is an important factor in operations that require clean or controlled interfaces. The present work seeks to describe particle adsorption and aggregation at the air—water interface in quiescent systems. A model is proposed for two-dimensional rapid aggregation as well as for slow surface aggregation dependent upon modified van der Waals and electrostatic interactions between particles at the surface. Experimental results from direct observation by darkfield microscopy of particle adsorption and surface aggregation are reported and found to be in qualitative agreement with the model predictions.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Attractive interactions between like-charged collo...

on Journal of Colloid and Interfa... Jan 01, 2005

Attractive interactions between like-charged collo...

on Journal of Colloid and Interfa... Nov 01, 2005
More articles like this..