Phase Transitions of Soluble Surfactants at a Liquid-Vapor Interface
Soft Condensed Matter
2007-05-23 v1
Abstract
Although medium chain length insoluble amphiphiles are well known to form gaseous and liquid expanded phases on an air/water interface, the situation for the soluble case is less clear. We perform molecular dynamics simulations of model surfactant molecules dissolved in a bulk liquid solvent in coexistence with its vapor. Our results indicate a transition in both soluble and insoluble surfactants: a plateau in surface tension vs. surface coverage, whose instantaneous configurations display two phase coexistence, along with correlation functions indicating a transition to gaseous to liquid-like behavior.
Keywords
Cite
@article{arxiv.cond-mat/0011189,
title = {Phase Transitions of Soluble Surfactants at a Liquid-Vapor Interface},
author = {M. S. Tomassone and A. Couzis and C. Maldarelli and J. R. Banavar and J. Koplik},
journal= {arXiv preprint arXiv:cond-mat/0011189},
year = {2007}
}
Comments
4 pages, 8 figures, Figure 1 and 6 (high quality) are availabe by email at [email protected], Submitted to PRL