Effect of Degassing on the Formation and Stability of Surfactant-Free Emulsions and Fine Telfon Dispersions

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dc.contributor.authorPashley, Richard
dc.date.accessioned2015-12-13T22:36:56Z
dc.date.available2015-12-13T22:36:56Z
dc.date.issued2003
dc.date.updated2015-12-11T09:34:20Z
dc.description.abstractThe results reported here demonstrate that the formation of surfactant-free, oil-in-water emulsions is significantly enhanced by the almost complete removal of dissolved gases. However, in an apparent contradiction, the reintroduction of dissolved gases does not destabilize already formed emulsions. Removal of dissolved gases enables the formation of much more turbid and stable hydrocarbon oil in water emulsions, which can be further studied without the effects of various additives, often needed as stabilizers. The observations reported here suggest that the dispersion of oil droplets in water is opposed by an attractive, hydrophobic force, which is dependent on the presence of dissolved gas. However, once formed, the stability of the emulsions appeared to be unaffected by any attractive hydrophobic force, in either gassed or degassed conditions. Degassing was also found to enhance the dispersion of fine Teflon particles in water.
dc.identifier.issn1520-6106
dc.identifier.urihttp://hdl.handle.net/1885/77010
dc.publisherAmerican Chemical Society
dc.sourceJournal of Physical Chemistry B
dc.subjectKeywords: Dissolved gases; Degassing; Dispersions; Hydrophobicity; Polytetrafluoroethylenes; Surface active agents; Emulsions
dc.titleEffect of Degassing on the Formation and Stability of Surfactant-Free Emulsions and Fine Telfon Dispersions
dc.typeJournal article
local.bibliographicCitation.issue7
local.bibliographicCitation.lastpage1720
local.bibliographicCitation.startpage1714
local.contributor.affiliationPashley, Richard, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailrepository.admin@anu.edu.au
local.contributor.authoruidPashley, Richard, u8002457
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor030603 - Colloid and Surface Chemistry
local.identifier.ariespublicationMigratedxPub5855
local.identifier.citationvolume107
local.identifier.doi10.1021/jp026744b
local.identifier.scopusID2-s2.0-0037456456
local.identifier.uidSubmittedByMigrated
local.type.statusPublished Version

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