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Migration and precipitation of soluble species during drying of colloidal films

Wedin, Par; Bergstrom , Lennart

Description

The evaporation-induced convection resulted in a transport of dissolved species, a water-soluble polymer (carboxymethylcellulose) and dissolved CaCO3, to the drying front of silica and CaCO3 dispersions where the material eventually precipitates. Scanning electron microscopy and chemical analysis showed that the concentration of carboxymethylcellulose, CMC, is highest in the centre of the dried silica film and decreases towards the perifery. The colloidal films of the monodisperse silica...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
URI: http://hdl.handle.net/1885/34941
Source: Journal of Colloid and Interface Science
DOI: 10.1016/j.jcis.2004.08.023

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