Small-angle neutron scattering study of aqueous solutions of pentanediol and hexanediol

Noémi K. Székely, L. Almásy, Aurel Rǎdulescu, L. Rosta

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Aqueous solutions of 1,2-pentanediol, 1,5-pentanediol, 1,2-hexanediol and 1,6-hexanediol have been studied by small-angle neutron scattering over a wide range of concentrations and temperatures. The structure of the solutions on the mesoscopic length scale, corresponding to the intermolecular distances, was analysed with the help of the Kirkwood-Buff formalism. 1,2-Hexanediol solutions exhibited a strong attractive diol-diol interaction, a weak diol-diol attraction was found for 1,6-hexanediol and 1,2-pentanediol, and an extremely weak diol-diol attraction was found in 1,5-pentanediol solutions. The general tendencies are the following: aggregation is stronger as the length of the hydrophobic hydrocarbon chain increases and the 1,2-diols exhibit much stronger attraction then the 1,ω-diols. The temperature dependence of the aggregation is weak for the 1,2-diols but strong for the 1,ω-diols, indicating in the latter case the hydrophobic character of the interaction.

Original languageEnglish
JournalJournal of Applied Crystallography
Volume40
Issue numberSUPPL. 1
DOIs
Publication statusPublished - Apr 2007

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Small Angle Scattering
Neutrons
Neutron scattering
attraction
neutron scattering
aqueous solutions
Agglomeration
Temperature
tendencies
Hydrocarbons
hydrocarbons
Hydrophobic and Hydrophilic Interactions
interactions
formalism
temperature dependence
temperature
1,5-pentanediol
1,2-pentanediol
1,2-hexanediol
hexamethylene glycol

Keywords

  • Alkanediols
  • Kirkwood-Buff integrals
  • SANS

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Structural Biology

Cite this

Small-angle neutron scattering study of aqueous solutions of pentanediol and hexanediol. / Székely, Noémi K.; Almásy, L.; Rǎdulescu, Aurel; Rosta, L.

In: Journal of Applied Crystallography, Vol. 40, No. SUPPL. 1, 04.2007.

Research output: Contribution to journalArticle

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