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China Surfactant Detergent & Cosmetics ›› 2016, Vol. 46 ›› Issue (10): 549-554.doi: 10.13218/j.cnki.csdc.2016.10.001

• Basic research •     Next Articles

Effect of addition of salt on solution of Gemini cationic surfactant

CHEN Xiao-xiao,GUO Yan,HAN Chuan-hong,ZHANG Jun-hong,ZHOU Shi-yan,WEI Xi-lian   

  1. Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, College of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng,Shandong 252059,China
  • Online:2016-10-22 Published:2019-04-18

Abstract: Effect of addition of sodium salicylate (NaSal) on viscoelastic performance of aqueous solution of Gemini cationic surfactant 2-hydroxy propylidene-1,3-bis(dimethyldodecylammonium chloride) (hereinafter refer to as 12-3(OH)-12(2Cl)) was studied with rheological measurement.Results showed that the addition of an inorganic salt induces salting out of the 12-3(OH)-12(2Cl),while NaSal promotes micellar growth.At a fixed NaSal-to-surfactant molar ratio of 0.6,viscosity of the solution is very small at a rather low concentration of 12-3(OH)-12(2Cl).Upon increasing the concentration,viscosity of the solution rises conspicuously and shows Maxwell fluid behavior.Following the increase of concentration of 12-3(OH)-12(2Cl),a maximum value of zero-shear viscosity (η0) appears.These trends can be attributed to the formation of a network structure between the cationic ions of 12-3(OH)-12(2Cl) and Sal- counter ion as the 12-3(OH)-12(2Cl) concentration increases.Crystal analysis further confirms the presence of structures linked by intermolecular hydrogen bonds.

Key words: Gemini cationic surfactant, rheological behavior, intermolecular hydrogen bond, wormlike micelle

CLC Number: 

  • TQ423.12