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Journal of Chemistry
Volume 2016, Article ID 2176769, 5 pages
Research Article

Effect of Methanol on Viscosity of Aqueous Solutions of Cationic Surfactants at 298.15 to 323.15 K

Department of Chemistry, Tribhuvan University, M.M.A.M. Campus, Biratnagar 56613, Nepal

Received 1 April 2016; Accepted 31 May 2016

Academic Editor: Tomokazu Yoshimura

Copyright © 2016 Sujit Kumar Shah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Viscosity measurements have been made to the solutions of dodecyltrimethylammonium bromide (DTAB) and cetyltrimethylammonium bromide (CTAB) in 0.10, 0.20, 0.30, and 0.40 volume fractions of methanol in methanol-water mixed solvent media at 298.15, 308.15, 318.15, and 323.25 K. Critical micelle concentration (CMC) values have been determined. From relative viscosity for surfactant solutions, related viscosity B coefficients are calculated and the values are interpreted in terms of solute-solvent interactions.