Coexistent phases in concentrated polydisperse emulsion flocculated by non-adsorbing polymer

Article


Fillery-Travis, A., Gunning, P., Hibberd, D. and Robins, M. 1993. Coexistent phases in concentrated polydisperse emulsion flocculated by non-adsorbing polymer. Journal of Colloid and Interface Science. 159 (1), pp. 189-197. https://doi.org/10.1006/jcis.1993.1311
TypeArticle
TitleCoexistent phases in concentrated polydisperse emulsion flocculated by non-adsorbing polymer
AuthorsFillery-Travis, A., Gunning, P., Hibberd, D. and Robins, M.
Abstract

We report a study of the creaming behavior of an alkane-in-water emulsion at varying oil volume fractions in the presence of the nonadsorbing polymer, hydroxyethylcellulose (HEC). Pairwise interaction potentials predict a shallow secondary minimum for this system arising from the attractive potential produced by the so-called depletion effect. Use of an ultrasonic creaming monitor has allowed us to verify the predicted flocculation and quantify the separation of the system into colloidrich and colloid-poor phases. The phase diagram for 20.2% v/v oil and varying polymer concentrations has been determined. At 0.02% w/w HEC we have investigated the effect of oil volume fraction on the phase composition of the system. The observed behavior has been compared with that predicted from the available theoretical treatments for phase separation but with due regard to the possible effects of polydispersity.

Research GroupWork and Learning Research Centre
LanguageEnglish
PublisherElsevier
JournalJournal of Colloid and Interface Science
ISSN0021-9797
Publication dates
Print31 Aug 1993
Online25 May 2002
Publication process dates
Deposited29 Sep 2015
Accepted01 Aug 1993
Output statusPublished
Digital Object Identifier (DOI)https://doi.org/10.1006/jcis.1993.1311
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