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Water-in-crude oil emulsions from the Norwegian continental shelf. 4. Monolayer properties of the interfacially active crude oil fraction
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
1991 (English)In: Colloids and Surfaces, ISSN 0166-6622, E-ISSN 1873-4340, Vol. 57, 83-98 p.Article in journal (Refereed)
Abstract [en]

Monolayer properties of interfacially active fractions in six different North Sea crude oils have been studied. The fractions were separated by a consecutive adsorption procedure utilizing functionalized silica as adsorbent. The molecular weight of the fractions are between 950 and 1450 g mol - 1. They are built up of carbon and hydrogen to 99 mol% and of nitrogen, oxygen and sulfur to 1 mol%. The fractions form monomolecular films in the air/water interface. The films enter the highly compressible liquid expanded state at specific areas in the rage of 0.20-0.28m2mg-1 lytes, pH, temerature and chemical additives is reported. It is shown that aromatic solvents strongly interact with the film hence modifying its monolayer properties. Relaxation studies of strongly interact with partly water-soluble groups. Correlation between the monolayer properties of these fractions and their ability to stabilize water-in crude oil emulsions is undertaken.

Place, publisher, year, edition, pages
1991. Vol. 57, 83-98 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26399OAI: oai:DiVA.org:ri-26399DiVA: diva2:1053401
Note
A678Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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