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The hydrophobic hydration in aqueous solutions of allyl-substituted ammonium salts

✍ Scribed by A. Lileev; D. Loginova; A. Lyashchenko; L. Timofeeva; N. Kleshcheva

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
141 KB
Volume
131-132
Category
Article
ISSN
0167-7322

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✦ Synopsis

The complex dielectric permittivity for the series of aqueous allyl-substituted ammonium salt solutions is investigated in microwave range (13-25 GHz) in a wide range of salt concentrations. The measurements were made at 298 K for diallylammonium and diallylmethylammonium trifluoroacetates and in the temperature interval 288-308 K for diallyldimethylammonium chloride. The values of dielectric constant ε s and parameters of the dielectric relaxation process were calculated. The increase of relaxation time τ in comparison with pure water is observed for all investigated solutions. It indicates the decrease of orientation mobility of water molecules in the H-bond network upon action of allyl-substituted ammonium ions connected with hydrophobic hydration of these ions.

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