Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/326
Title: The mixing behavior of n-alkylpyridinium bromide–NP-9 mixed surfactant systems
Authors: Paria, S
Keywords: Surface tension
Mixed CMC
Interaction parameter
Regular solution theory (RST)
Issue Date: 2006
Publisher: Elsevier
Citation: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol 281, Iss 1-3, P 113-118
Abstract: The interaction between n-alkylpyridinium bromide (CmPB, m = 16, 14, 12, and 10) cationic surfactants and nonylphenyl ethoxylates (4-C9H19C6H4(OCH2CH2)9OH, 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 (β12) 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.
Description: Copyright for the published version of this paper belongs to Elsevier Science Ltd doi:10.1016/j.colsurfa.2006.02.023
URI: http://hdl.handle.net/2080/326
Appears in Collections:Journal Articles

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