Size and shape of sodium deoxycholate micellar aggregates

Gennaro Esposito, E. Giglio, N. V. Pavel, A. Zanobi

Research output: Contribution to journalArticle

Abstract

From SAXS and ESR measurements carried out on sodium deoxycholate (NaDC) aqueous solutions as a function of NaDC and NaCl concentrations and temperature we have deduced the mean hydrodynamic radius, shape, and aggregation number of the micellar aggregates. The validity of a helical model previously proposed for NaDC micellar aggregates was satisfactorily checked. Some limits of the experimental techniques are discussed. A qualitative agreement between the data obtained from SAXS and ESR measurements was observed. The extent of micellar growth increases with the concentration of added NaCl and as the temperature is lowered. Much smaller changes than for the ionic strength were detected by increasing the NaDC concentration within the range 0.05-0.15 M.

Original languageEnglish (US)
Pages (from-to)356-362
Number of pages7
JournalJournal of Physical Chemistry
Volume91
Issue number2
DOIs
StatePublished - Jan 1 1987

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Deoxycholic Acid
Paramagnetic resonance
Sodium
sodium
Ionic strength
Agglomeration
Hydrodynamics
Temperature
hydrodynamics
aqueous solutions
radii
temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Size and shape of sodium deoxycholate micellar aggregates. / Esposito, Gennaro; Giglio, E.; Pavel, N. V.; Zanobi, A.

In: Journal of Physical Chemistry, Vol. 91, No. 2, 01.01.1987, p. 356-362.

Research output: Contribution to journalArticle

Esposito, Gennaro ; Giglio, E. ; Pavel, N. V. ; Zanobi, A. / Size and shape of sodium deoxycholate micellar aggregates. In: Journal of Physical Chemistry. 1987 ; Vol. 91, No. 2. pp. 356-362.
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