Brominated surfactants as emulsifiers and weighting agents. Part III: Weighting properties

M. Frenkel*, Z. Krauz, N. Garti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A new concept was developed as a result of this study: preparation of surfactants which combine weighting and emulsifying functions in one compound. An example is the bromination of unsaturated commercial surfactants to increase their specific gravity. Both non-ionic and anionic surfactants were brominated. By using proper amounts of the new emulsifiers-weighting agents in oil-in-water emulsions, the specific gravity of the oil droplets can be equalized to that of water, very stable emulsion are obtained and no creaming occurs. Larger amounts of these emulsifier-weighting agents in the system increase the specific gravity of the oil droplets to values higher than one. Consequently, downward creaming (sedimentation) occurs, providing substantial evidence for their weighting properties.

Original languageEnglish
Pages (from-to)45-54
Number of pages10
JournalColloids and Surfaces
Volume8
Issue number1
DOIs
StatePublished - Nov 1983

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