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Varade D, Ushiyama K, Shrestha LK, et al. Wormlike micelles in Tween-80/CmEO3 mixed nonionic surfactant systems in aqueous media. J Colloid Interface Sci. 2007;312(2):489-97doi: 10.1016/j.jcis.2007.02.090.
Varade, D., Ushiyama, K., Shrestha, L. K., & Aramaki, K. (2007). Wormlike micelles in Tween-80/CmEO3 mixed nonionic surfactant systems in aqueous media. Journal of colloid and interface science, 312(2), 489-97. https://doi.org/10.1016/j.jcis.2007.02.090
Varade, Dharmesh, et al. "Wormlike micelles in Tween-80/CmEO3 mixed nonionic surfactant systems in aqueous media." Journal of colloid and interface science vol. 312,2 (2007): 489-97. doi: https://doi.org/10.1016/j.jcis.2007.02.090
Varade D, Ushiyama K, Shrestha LK, Aramaki K. Wormlike micelles in Tween-80/CmEO3 mixed nonionic surfactant systems in aqueous media. J Colloid Interface Sci. 2007 Aug 15;312(2):489-97. doi: 10.1016/j.jcis.2007.02.090. Epub 2007 Mar 15. PMID: 17412356.
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J Colloid Interface Sci. 2007 Aug 15;312(2):489-97. doi: 10.1016/j.jcis.2007.02.090. Epub 2007 Mar 15.

Wormlike micelles in Tween-80/CmEO3 mixed nonionic surfactant systems in aqueous media.

Journal of colloid and interface science

Dharmesh Varade, Kousuke Ushiyama, Lok Kumar Shrestha, Kenji Aramaki

Affiliations

  1. Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai 79-7, Yokohama 240-8501, Japan.

PMID: 17412356 DOI: 10.1016/j.jcis.2007.02.090

Abstract

Formation and rheological behaviour of viscoelastic wormlike micellar solution in aqueous mixed system of nonionic surfactants, polyoxyethylene sorbitan monooleate (Tween-80) and trioxyethylene alkyl ether (C(m)EO(3), m=12, 14, and 16) was studied. The semi-dilute aqueous solution of Tween-80, in presence of C(m)EO(3) shows a sharp increase in viscosity leading to the formation of a gel-like highly viscoelastic solution reaching a maximum, but decreases beyond an intermediate concentration and finally phase separates. When C(12)EO(3) is replaced by C(14)EO(3) the micellar growth occurs more effectively. However, with further increase in alkyl chain length, i.e. with C(16)EO(3), phase separation occurs before a viscoelastic solution is formed. The effect of temperature on the water/Tween-80/C(14)EO(3) mixed surfactant system was also studied. With increase in temperature, viscosity increases more promptly and the viscosity maximum is attained at relatively lower concentration of C(14)EO(3). Enhanced one dimensional micellar growth with increase in the temperature is mainly attributed to the decrease in the spontaneous curvature of the aggregates. Structural investigation by means of small-angle X-ray scattering (SAXS) technique of micelles in aqueous solution of Tween-80 and mixed water/Tween-80/C(m)EO(3) systems confirmed the one dimensional micellar growth in the above system.

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