Cristin-resultat-ID: 627879
Sist endret: 27. august 1998, 00:00
Vitenskapelig foredrag

Micelles and Microemulsions

  • Geir Martin Førland


Navn på arrangementet: Seminar i Petroleumsfysikk
Sted: Fevik

Om resultatet

Vitenskapelig foredrag
Publiseringsår: 1998


ForskDok-ID: r98024455

Beskrivelse Beskrivelse


Micelles and Microemulsions


The hydrophobic and electrostatic forces among ionic surfactant molec ules play an essential role for the self-association and formation of micelles and microemulsions. The ability to solubilize large amounts of otherwise insoluble or sparingly soluble molecules form the basic functionality's of soap solutions and microemulsions. One can achiev e an increased flexibility of the micellar membrane and an improved a bility to solubilize hydrophobic molecules by adding neutral salt and a medium chain alcohol as a co-surfactant. Therefore, these elements make the basic components in most microemulsions.In this presentatio n, the effect of medium chain alcohol molecules on the size and struc ture of anionic micelles has been investigated by means of Small Angl e Neutron Scattering (SANS). The diffusion coefficients of the surfac tant and alcohol has been measured by Fourier Transform Pulsed fiels Gradient Spin Echo (FT-PGSE) nuclear magnetic resonance measurements. The alcohol used were 1-propanol, 1-butanol and 1-pentanol. The data obtained from the different techniques aggrees qualitatively. The re sults show that the small hydrophilic alcohol breaks down the micelle s while the more hydrophobi


Geir Martin Førland

  • Tilknyttet:
    ved Institutt for sikkerhet, kjemi- og bioingeniørfag ved Høgskulen på Vestlandet
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