Interactions of sodium polystyrene sulfonate with 1-hexyl-3-methylimidazolium bromide in aqueous solution: conductometry and density functional theory studies. (4th July 2018)

• Record Type: Journal Article
• Authors: Mehrdad, Abbas; Parvini, Elahe
• Is Part Of: Physics and chemistry of liquids. Volume 56:Number 4(2018)
• Page Start: 544
• Page End: 560
• Publication Date: 2018-07-04
• Subjects: 1-Hexyl-3-methylimidazolium bromide -- sodium polystyrene sulfonate -- conductivity -- density functional theory; Liquids -- Periodicals; 530.4205
• DOI: 10.1080/00319104.2017.1367393
• Languages: English
• ISSNs: 0031-9104

Abstract

ABSTRACT: Conductivity measurements of sodium polystyrene sulfonate (NaPSS) were carried out in aqueous solutions of 1-hexyl-3-methylimidazolium bromide ([HMIm]Br) at three different temperatures. The scaling theory is used for the description of electrical conductance of polyelectrolytes. The fraction of uncondensed counterions is decreased by increasing temperature and concentration of [HMIm]Br. Conductivity measurements of ([HMIm]Br were accomplished in aqueous solutions of sodium polystyrene sulfonate. Data analysis was performed by the Quint–Viallard conductivity equation and low concentration chemical model. Molar conductivity of [HMIm]Br in aqueous solutions of NaPSS was increased with increasing temperature. The values of activation energy for viscous flow are higher than the values of activation enthalpy of charge transport; therefore, it can be concluded that in addition of ion transfer, the formation and breaking hydrogen has a portion in charge transfer. The results of Quantum chemical calculations confirm the existence of hydrogen bonding between [HMIm] + and [PSS] – .