Effect of oil soluble surfactant in emulsions stabilised by clay particles.

Effect of oil soluble surfactant in emulsions stabilised by clay particles. Research Abstract Details 

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Effect of oil soluble surfactant in emulsions stabilised by clay particles. Abstract Text:

Although surfactants and particles are often mixed together in emulsions, the contribution of each species to the stabilisation of the oil-water interface is poorly understood. We report the results of investigations into the formation of emulsions from solutions of surfactant in oil and aqueous suspensions of laponite. Depending on the salt concentration in the aqueous suspensions, the laponite dispersed as individual disc-shaped particles, 30 nm in diameter, or flocculated into aggregates tens of micrometres in diameter. At the concentrations studied, the flocculated particles alone stabilized oil-in-water emulsions. Synergistic interactions between the particles and octadecylamine at the oil-water interface reduced the average emulsion drop size, while antagonistic interactions with octadecanoic acid enhanced coalescence processes in the emulsions. The state of particle dispersion had dramatic effects on the emulsions formed. Measurements of the oil-water interfacial tension revealed the origins of the interactions between the surfactants and particles.

Effect of oil soluble surfactant in emulsions stabilised by clay particles. Publishing Authors By Initials

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Effect of oil soluble surfactant in emulsions stabilised by clay particles. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of colloid and interface science

VOLUME: 323

Page Numbers: 410-9

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ISSN: 0021-9797

DAY: 23

MONTH: 04

YEAR: 2008

Effect of oil soluble surfactant in emulsions stabilised by clay particles. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Effect of oil soluble surfactant in emulsions stabilised by clay particles.

AFFILIATION: Ian Wark Research Institute, University of South Australia, Mawson Lakes, S.A. 5095, Australia.

Country: United States

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MEDLINETA: J Colloid Interface Sci

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