KCl/NaCl DMSO aqueous solutions dielectric spectra and cooperative interactions

ABSTRACT

The complex permittivity spectra of KCl/NaCl DMSO aqueous solutions were measured using microwave dielectric spectroscopy. Ion–water and dipole–water cooperative interactions are investigated by using a fractional relaxation process. Only about one cooperative relaxation was found during the cut-off relaxation time interval and the relaxation time increases with concentration increasing. Ions’ concentration dependent on effective number of water molecules in the shell around ions was calculated to reveal the interactions between K⁺, Cl⁻, Na⁺ ions and DMSO molecules.

KEYWORDS:

• Dielectric spectra
• cooperative interactions
• relaxation time
• DMSO

Disclosure statement

No potential conflict of interest was reported by the authors.