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China Surfactant Detergent & Cosmetics ›› 2015, Vol. 45 ›› Issue (1): 1-6.doi: 10.13218/j.cnki.csdc.2015.01.001

• Basicresearc •     Next Articles

Rheological performance of aqueous solution of a cationic surfactant containing hydroxypropyl group

ZHANG Xu-dong, GE Qing, LI Qing-xia, YANG Min, HAN Chuan-hong, 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:2015-01-22 Published:2019-04-01

Abstract: Rheological performance of aqueous solution of a cationic surfactant (3-tetradecyloxy-2-hydroxypropyltrimethylammonium bromide,R14HTAB) was studied with steady and dynamic shear rheological method.Results showed that structure of the self-asembly of the R14HTAB undergoes three transitions in the shape within the investigated concentration range,from spherical to rodlike micelles,then to viscoelastic wormlike micelles,and finally to hexagonal lytropic liquid crystal.The transition from spherical micelles into rodlike micelles takes place as the concentration of R14HTAB higher than 360 mmol/kg.The overlapped threshold micelle concentration is about 500 mmol/kg.The viscosity at zero shear (η0) and R14HTAB concentration (C) displays exponential relationship,i.e.,η0∝C5.7.The microstructure of the formed micelles was further ascertained by FF-transmission electronic microscopy.The deviations from Cox-Merz rule in the steady and dynamic viscosity experiment is mainly due to formation of hydrogen bond.

Key words: 3-tetradecyloxy-2-hydroxypropyltrimethylammonium bromide, rheological property, self-asembly, network structure

CLC Number: 

  • TQ423.12