The mixing behavior of n-alkylpyridinium bromide-NP-9 mixed surfactant systems

Paria, S (2006) The mixing behavior of n-alkylpyridinium bromide-NP-9 mixed surfactant systems. Colloids And Surfaces A-Physicochemical And Engineering Aspects , 281 (1). pp. 113-118.

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The interaction between n-alkylpyridinium bromide (CmPB, m=16, 14, 12, and 10) cationic surfactants and nonylphenyl ethoxylates (4-C9H19C6H4(OCH2CH2)(9)OH, NP-9) nonionic surfactant are investigated using surface tension method. The mixed critical micellar concentration (CMC) values determined from the experimental data are used to calculate the interaction parameter (1612) using regular solution theory (RST) of the mixed surfactant systems. Four different alkylpyridinium bromide surfactants show almost ideal behavior when mixed with NP-9, the interaction parameter values calculated using RST is close to zero. The micellar mole fraction of the cationic surfactant decreases in the mixed micelle with decreasing the alkyl chain length of the cationic surfactant. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:Article
Official URL/DOI:DOI: 10.1016/j.colsurfa.2006.02.023
Uncontrolled Keywords:surface tension; mixed CMC; interaction parameter; regular solution theory (RST)
Divisions:NML Chennai
ID Code:3385
Deposited By:Sahu A K
Deposited On:23 Jul 2011 11:49
Last Modified:07 Feb 2012 14:43
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