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Mixed micellization and surface properties of non-ionic/cationic surfactants

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Mixed

micellization

and

surface

properties

of

non-ionic/cationic surfactants

Authors

Lakhdar Berriche, Leila Badache, Samir Habi BenHariz, Amine Gharbi, Walid Talhi

Publication date

2019/3/4

Journal

Journal of Dispersion Science and Technology

Volume 40 Issue 3 Pages 378-389 Publisher

Taylor & Francis

Description

We investigate the surface properties of aqueous binary mixtures of our cationic surfactant O-dodecyl-N,N′-diisopropylisourea hydrochloride (ISO-DIC C12) with commercially available

nonionic surfactant polyoxyethylene p-(1,1,3,3-tetramethylbutyl)phenyl ether (TritonX-100) at different temperatures (288 to 303 K). The micellization behavior of the binary systems is studied by determining the surface tension and other important physicochemical parameters, such as the critical micelle concentration (CMC), surface tension at the CMC(γcmc), Krafft

Temperature (TK), maximum excess concentration (Γmax), minimum surface area per molecule

(Amin), surface pressure at the CMC (Пcmc), and the adsorption efficiency (pC20) at the

air/water interface. The study has additionally covered the calculation of thermodynamic parameters of micellization, including the standard Gibbs free energy, the standard enthalpy, the …

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