Viscosity Behavior of Sodium Linear Alkyl Benzenesulfonate Solution with High Concentration Containing Inorganic Salts and Urea

Abstract

Abstract: The thickening efficiency of inorganic salt is remarkable and has a maximum viscosity value for concentrated sodium straight-chain alkyl benzenesulfonate(SLABS) solution.The maximum viscosity values which various salts can reach are markedly different.The interaction between salt and micelle solution is mainly the electrostatic effects.The thickening ability of salt is limited by the activity product between the hydrated individual ion(of surfactant) and the metal ion of salt.Urea diminishes markedly the viscosity values of concentrated SLABS solutions.When using(1/2) Na₂SO₄as a thickening agent,the higher the concentrations of urea are,the lower the maximum viscosity values are and the higher the concentrations of salt corresponding to the values.These are interpreted in term of forming the individual of partial urea adduct between urea and the hydrated individual,and diminishing SLABS actual concentration of the equilibria between the hydrated individual and micelle.

Key words: Inorganic salt, Urea, Sodium straight-chain alkyl benzenesulfonate, Viscosity behavior

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WANG Jing-He. Viscosity Behavior of Sodium Linear Alkyl Benzenesulfonate Solution with High Concentration Containing Inorganic Salts and Urea[J]. Chem. J. Chinese Universities, 1995, 16(2): 287.

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Viscosity Behavior of Sodium Linear Alkyl Benzenesulfonate Solution with High Concentration Containing Inorganic Salts and Urea

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