Abstract
Specific conductivities of a homologous series of n-alkyl trimethylammonium bromides (C8,C10,C12 and C14TABs) in the presence of poly(l-aspartate) in glycine buffer at pH 3.2 and 25 ∘C have been measured over a range of C n TAB concentrations. From the conductivity changes, the number of surfactant molecules absorbed onto the polymer, the Gibbs free energies of adsorption and the equilibrium constants have been calculated. A statistical thermodynamics analysis was used to obtain the Gibbs free energies of adsorption. The results obtained using both methods are compared and analysed.
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Received: 15 December 1999 Revised form: 29 February 2000 Accepted: 3 March 2000
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Ruso, J., Sarmiento, F. The interaction between n-alkyl trimethylammonium bromides with poly(l-aspartate): a thermodynamics study. Colloid Polym Sci 278, 800–804 (2000). https://doi.org/10.1007/s003960000343
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DOI: https://doi.org/10.1007/s003960000343