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On the formation and stability of concentrated water-in-oil emulsions, aphrons
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
1990 (English)In: Colloids and Surfaces, ISSN 0166-6622, E-ISSN 1873-4340, Vol. 50, 131-140 p.Article in journal (Refereed)
Abstract [en]

The stability of concentrated w/o emulsions is discussed on the basis of stability measurements of systems containinmg water, dodecane ( or hexadecane) and a nonionic surfactant, viz., polyoxyethylene dodecyl ether. In these emulsions the ratio of the dispersed aqueous phase to the organic phase is so high that the aqueous domains are polyhedral, so-called aphrons, so that the maximum available space is filled. The stability is dependent on: (i) the structure of the surfactant, which determines the preferencial solvency of the surfactant in the organic or the aqueous phase; and (ii) the presence of salts in the aqueous phase, which influences the stability by stopping the Ostwald ripening and/or decreasing the attractive force across the oil lamellae between the aqueous droplets.

Place, publisher, year, edition, pages
1990. Vol. 50, 131-140 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26409OAI: oai:DiVA.org:ri-26409DiVA: diva2:1053411
Note
A640Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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