Cristin-resultat-ID: 627878
Sist endret: 13. august 1998, 00:00
Resultat
Vitenskapelig artikkel
1998

Influence of Alcohol on the Behavior of Sodium Dodecylsulfate Micelles

Bidragsytere:
  • Geir Martin Førland
  • Jon Samseth
  • Magne Ivar Gjerde
  • Harald Høiland
  • Arvid Jensen og
  • Kell Mortensen

Tidsskrift

Journal of Colloid and Interface Science
ISSN 0021-9797
e-ISSN 1095-7103
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 1998
Hefte: 203
Sider: 328 - 334

Importkilder

ForskDok-ID: r98024055

Klassifisering

Emneord

NMR • Miceller • Vinkel

Beskrivelse Beskrivelse

Tittel

Influence of Alcohol on the Behavior of Sodium Dodecylsulfate Micelles

Sammendrag

The effect of medium chain alcohol molecules on the size and shape of sodium dodecylsulfate micelles, and on the self-diffusion coefficien t of the surfactant and alcohol, has been investigated by means of sm all angle neutron scattering (SANS), and Fourier transform pulsed fie ld gradient spin echo (FT-PGSE) nuclear magnetic resonance measuremen ts. All measurements were done in D2O containing a sodiumchloride con centration of 0.4 mol/kg, and a surfactant concentration of 0.04 mol/ kg. The alcohols used were 1-propanol, 1-butanol, and 1-pentanol. The data obtained from the different techniques agrees qualitatively. Th e results show that propanol successively breaks down the micelles wh ile pentanol brings about a structural change toward large wormlike a ggregates. Butanol shows a highly complex behavior on the structure o f the micelles and can decrease and increase the size of the aggregat es, depending on the added alcohol concentration range. All analysed solutions show a distribution of the alcohol between the aqueous bulk solution and the palisadelayer of the micelles, resulting in an incr eased "hydration" of D2O in the micellar surface. Moreover, the struc tural changes of the micell

Bidragsytere

Geir Martin Førland

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

Jon Samseth

  • Tilknyttet:
    Forfatter

Magne Ivar Gjerde

  • Tilknyttet:
    Forfatter

Harald Høiland

  • Tilknyttet:
    Forfatter
    ved Universitetet i Bergen

Arvid Jensen

  • Tilknyttet:
    Forfatter
1 - 5 av 6 | Neste | Siste »