Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1115, Issue -, Pages 109-116Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2016.02.083
Keywords
Diester-linked gemini surfactant; Polycyclic aromatic hydrocarbon; Mixed micelle; Synergistic interaction; Micellar solubilization
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Funding
- Department of Science and Technology, Government of India
- University Grants Commission (India)
- UGC
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Three homologues of a novel biodegradable diester-linked cationic gemini surfactant series, CmH2m+1(CH3)(2)N+(CH2COOCH2)(2)N+(CH3)(2)CmH2m+1 center dot 2Cl(-) (m-E2-m; m = 12, 14, 16), were used for investigation of the solubilization of polycyclic aromatic hydrocarbons (PAHs) such as naphthalene, anthracene and pyrene in single as well as binary surfactant solutions. Physicochemical parameters of the pure/mixed systems were derived by conductivity and surface tension measurements. Dissolution capacity of the equimolar binary surfactant solutions towards the PAHs was studied from the molar solubilization ratio (MSR), micelle-water partition coefficient (K-m) and free energy of solubilization (Delta G(s)(0)) of the solubilizates. Influence of hydrophobic chain length of the dimeric surfactants on solubilization was characterized. Aqueous solubility of the PAHs was enhanced linearly with concentration of the surfactant in all the pure and mixed gemini gemini surfactant systems. (C) 2016 Elsevier B.V. All rights reserved.
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