Micellization, surface activities and thermodynamics study of pyridinium-based ionic liquid surfactants in aqueous solution.

ABSTRACT: The micellization and surface activity properties of long-chain pyridinium ionic liquids n-alkyl-3-methylpyridinium bromide ([C _n mpy][Br], n: the carbon numbers of hydrophobic tails, n = 12, 14, 16) in aqueous solution were systematically investigated through electronic conductivity measurement, surface tension, and ultraviolet-absorption spectra. The surface chemical parameters and thermodynamics parameters were obtained. The [C _n mpy][Br] ionic liquids exhibit higher surface activities than conventional surfactants with corresponding alkyl chain lengths. The effects of inorganic salts (LiBr, NaBr, MgBr₂), organic alcohols (C₂H₅OH, C₃H₇OH, C₄H₉OH, C_5<

SUBMITTER: Fu D 

PROVIDER: S-EPMC9071189 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature