Abstract
AbstractTo determine the increment of the standard free energy per methylene group ΔG0CH2 for ionic and nonionic surfactants, two calculation methods are proposed. One procedure is based on the adsorption energy parameter of the respective adsorption isotherm, and the second on the critical micelle concentration. Experimental surface tension isotherms for two homologous series, a nonionic (CnBHB) and an ionic (CnTAB) surfactant, are used to demonstrate how the methods work. As adsorption isotherms, the Frumkin and the reorientation models provide a rather good description for both surfactants. The free energy increments ΔG0 obtained from the two methods are the same if the reorientation model is used, but the Frumkin model gives different results.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
