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author:

Yang, Ge (Yang, Ge.) [1] | Zhao, Jianxi (Zhao, Jianxi.) [2] (Scholars:赵剑曦)

Indexed by:

Scopus SCIE

Abstract:

An equi-charged mixture of cationic gemini surfactant, C,C'-bis(sodium dodecyldimethylammonium bromide)-p-benzenedimethylene (12-Ph-12), and anionic surfactant, sodium laurate (SL), can be dissolved in cyclohexane to form reverse worm-like micelles. The samples, with their different surfactant concentrations and water contents, were studied using rheological measurements. The minimum value of W (0), the molar ratio of water to total surfactants, was 9 for the equally charged system of 12-Ph-12 (200 mmol L-1)/SL. The maximum value of zero-shear viscosity (eta (0)) of this system was 1858 Pa s(-1) at W (0) = 14. Upon increasing the 12-Ph-12 concentration to 300 mmol L-1, eta (0) increased rapidly to 2200 Pa s(-1). The dynamic rheology showed the typical visco-elastic response of a thread-like micelle solution at 12-Ph-12 (200 mmol L-1) and W (0) = 10, with a relaxation time (tau (R)) of 0.11 s. At W (0) = 14, a characteristic of a surfactant gel was shown, where the elastic modulus (G') and the viscous modulus (GaEuro(3)) were independent of frequency. Non-linear visco-elasticity showed a strain-softening response at high strains.

Keyword:

Cationic/anionic surfactant Equi-charged mixture Reverse worm-like micelles Visco-elastic properties

Community:

  • [ 1 ] [Yang, Ge]Fuzhou Univ, Coll Chem & Chem Engn, Inst Colloid & Interface Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Zhao, Jianxi]Fuzhou Univ, Coll Chem & Chem Engn, Inst Colloid & Interface Chem, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • 赵剑曦

    [Zhao, Jianxi]Fuzhou Univ, Coll Chem & Chem Engn, Inst Colloid & Interface Chem, Fuzhou 350108, Fujian, Peoples R China

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Source :

RHEOLOGICA ACTA

ISSN: 0035-4511

Year: 2016

Issue: 9

Volume: 55

Page: 709-715

1 . 7 6 7

JCR@2016

2 . 3 0 0

JCR@2023

ESI Discipline: PHYSICS;

ESI HC Threshold:186

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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