On the nature of the factors which govern the electrochemical condensation of neutral surfactants

✍ Scribed by Cl. Buess-Herman; C. Franck; L. Gierst

• Book ID: 103065498
• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 514 KB
• Volume: 31
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(86)80010-x

✦ Synopsis

2-D phase transitions involving neutral surfactants are primarily controlled by the interfacial free energy gap Ayf which is triggered when an adequate perturbation step is imposed to the surface. By combining (i) the Gibbs differential equation for clectrocapillarity, (ii) the Avrami expression for progressive nucleation and growth and (iii) the Erdey-Gruz and Volmer relation for the activation energy of nucleation, the separate effects of pressure, potential, concentration and temperature can be predicted in a quantitative way. The three latter factors are examined. It is found that polynucleation transients depend on E, c and T, in close agreement with the theory. The system investigated is isoquinoline at the mercury-water interface.