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author:

Xie, D. (Xie, D..) [1] | Zhao, J. (Zhao, J..) [2] | You, Y. (You, Y..) [3]

Indexed by:

Scopus

Abstract:

The viscoelastic wormlike micellar solutions formed by the carboxylate gemini surfactant, O,O′-bis(sodium 2-dodecylcarboxylate)-p-dibenzenediol (referred to as C12φ2C12), have been investigated by steady-state and dynamic frequency-sweep rheological techniques. Another system using its homologue, O,O′-bis(sodium 2-dodecylcarboxylate) -p-benzenediol (C12φC12), was also examined for comparison. Both C12φ2C12 and C 12φC12 formed wormlike micelles without any additives. The C* corresponding to the onset of the semi-dilute regime was 48 mmol L-1 for C12φ2C12 and 160 mmol L-1 for C12φC12, respectively, showing the considerably high ability and efficiency of C12φ 2C12 in forming wormlike micelles. The wormlike micelles started to entangle with each other at 60 mmol L-1 for C 12φ2C12 and 300 mmol L-1 for C12φC12. The average length of the C 12φ2C12 wormlike micelles was estimated to be about 1.0-1.9 μm, significantly longer than the C12φC 12 ones. The solution viscosity of C12φ 2C12 at 200 mmol L-1 reached 613 Pa s, much higher than 24.2 Pa s for C12φC12 at 500 mmol L -1. The mechanisms of forming wormlike micelles in both cases were revealed by dynamic light scattering measurements. Differently from the normal micellar growth that C12φC12 displayed, C 12φ2C12 was found to form large network-like aggregates at very low concentrations. These aggregates could more conveniently transform into threadlike (wormlike) micelles by continuously increasing the concentration of C12φ2C12, from which a new approach was realised for highly viscoelastic anionic wormlike micellar solutions. © The Royal Society of Chemistry 2013.

Keyword:

Community:

  • [ 1 ] [Xie, D.]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian 350108, China
  • [ 2 ] [Zhao, J.]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian 350108, China
  • [ 3 ] [You, Y.]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian 350108, China

Reprint 's Address:

  • [Zhao, J.]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian 350108, China

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Source :

Soft Matter

ISSN: 1744-683X

Year: 2013

Issue: 28

Volume: 9

Page: 6532-6539

4 . 1 5 1

JCR@2013

2 . 9 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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