uu.seUppsala universitets publikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Contrast Variation SANS Investigation of Composition Distributions in Mixed Surfactant Micelles
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för fysikalisk och analytisk kemi.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för fysikalisk och analytisk kemi.
2007 (engelsk)Inngår i: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 111, nr 25, s. 7133-7141Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Small angle neutron scattering measurements have been performed on three systems (HFDeP-d5-C (N-1(1,1,2,2-tetrahydroperfluorodecanoyl)pyridinium-d5 chloride)/C16PC in 63 mM NaCl; HFDeP-d5-C/C12PC in 200 mM NaCl, and as an example of an ideally mixed system, SDS/SDS-d25 in 200 mM NaCl) contg. micelles formed in a binary mixt. of surfactants, in order to investigate the compn. distribution of the mixed micelles. The exptl. data were collected varying the contrast between the av. scattering length d. of micelles and aq. solvent by changing the H2O/D2O ratio. Anal. of data includes a model-independent approach-the indirect Fourier transformation method and direct modeling-simultaneous fit at all contrasts by the scattering from micelles of equal size and shape with compn. distribution and an effective interaction. It has earlier been shown (Almgren, M.; Garamus, V. M. J. Phys. Chem. B 2005, 109, 11348) that for micelles of equal size, independent of the compn., and with negligible intermicellar interactions, the scattered intensity at zero angle varies quadratically with the contrast, with the min. intensity at the nominal match point proportional to s2, the variance of the micelle compn. distribution. Within the regular soln. framework, the compn. distribution and its variance are uniquely defined by the value of the interaction parameter and the micelle aggregation no. At 25 DegC, the first system gave s = 0.37, corresponding to a broad, bimodal compn. distribution, the second s = 0.22, a broad distribution with a shallow min. at the midpoint. For SDS/SDS-d25, we found s = 0.006 +- 0.030, which is a smaller value than that of the binominal compn. distribution expected for an ideally mixed system.

sted, utgiver, år, opplag, sider
2007. Vol. 111, nr 25, s. 7133-7141
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-11200DOI: 10.1021/jp070271xISI: 000247435700025PubMedID: 17530797OAI: oai:DiVA.org:uu-11200DiVA, id: diva2:38968
Tilgjengelig fra: 2007-06-13 Laget: 2007-06-13 Sist oppdatert: 2017-12-11bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstPubMed

Personposter BETA

Almgren, MatsJiang, Nan

Søk i DiVA

Av forfatter/redaktør
Almgren, MatsJiang, Nan
Av organisasjonen
I samme tidsskrift
Journal of Physical Chemistry B

Søk utenfor DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric

doi
pubmed
urn-nbn
Totalt: 859 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf