Near-critical liquid/liquid interfaces of simple and complex mixtures probed by ellipsometry

Jens Schulz, Andrea Hirtz and Gerhard H. Findenegg

Physica A: Statistical Mechanics and its Applications, 1997, vol. 244, issue 1, 334-343

Abstract: Measurements of the coefficient of ellipticity ϱ of light reflected at liquid/liquid interfaces of five binary mixtures are presented and analyzed in terms of theories which account for the interfacial thickness on the basis of the intrinsic profile and capillary waves. For simple mixtures of organic compounds exhibiting a lower miscibility gap and aqueous systems of weak amphiphiles like oxyethylene butylether (n-C4E1 and i-C4E1) with an upper miscibility gap, the experimental results for ϱ are consistent with current composite theories of the interfacial thickness. However, for an aqueous system of a strong amphiphile (C10E4, a nonionic surfactant) the results for ϱ deviate significantly from the calculated values at temperature |T − Tc| > 2 K. This is attributed tentatively to the formation of a layer of surfactant in the interface of this water-continuous system.

Date: 1997
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437197002987
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:244:y:1997:i:1:p:334-343

DOI: 10.1016/S0378-4371(97)00298-7

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().