Conformations of hydrophobic chains at liquid/gas interface and their implications on surfactant adsorption
More details
Hide details
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences
Piotr Warszyński   

Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239, Cracow, Poland
Publication date: 2002-01-01
Physicochem. Probl. Miner. Process. 2002;36(1):39–49
We present a simple model of single chain, non-ionic surfactant adsorption at gas/liquid interface. Our model takes explicitly into account the effect of conformations the surfactant hydrocarbon chains can assume at the interface. We applied our model for the description of a dependence of surface tension on solution concentration of homologous series of n-alkanols. Aliphatic alcohols with the chain length from four to ten carbon atoms were studied. We found that our model correctly describes experimental data and predicts a distribution of chain conformation at the interface for all n-alkanols studied. We detected small but distinct even-odd effect in the distribution of conformations.