Table of Contents

Article

Stability and Comparative Analysis of AOT/Water/Isooctane Reverse Micelle System Using Dynamic Light Scattering and Molecular Dynamics

Figures
Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

V. R. Vasquez*†, B. C. Williams‡, and O. A. Graeve*‡

^† Chemical and Materials Engineering, University of Nevada, Reno, Reno, Nevada 89557, United States

^‡ Kazuo Inamori School of Engineering, Alfred University, Alfred, New York 14802, United States

J. Phys. Chem. B, 2011, 115 (12), pp 2979–2987

DOI: 10.1021/jp109202f

Publication Date (Web): March 8, 2011

*E-mail: (V.R.V.) victor.vasquez@unr.edu; (O.A.G.) graeve@alfred.edu. Telephone: +775 784 6060. Fax: +775 784 4764.

Section:

Surface Chemistry and Colloids

Abstract

We use molecular dynamics (MD) and dynamic light scattering (DLS) measurements to analyze the size of reverse micellar structures in the AOT−water−isooctane system at different water-to-surfactant ratios at ambient temperature and pressure. We find good qualitative agreement for the size and morphology behavior of the reverse micelle structures between molecular dynamics calculations and DLS measurements; however, the average values for the reverse micelle size distributions are systematically larger for the DLS measurements. The latter tends to capture the average hydrodynamic size of the structures based on self-diffusion rather than the average physical size as measured in MD simulations, explaining the systematic deviations observed. The combination of MD with DLS allows a better interpretation of the experimental results, in particular for conditions where the structures are nonspherical, commonly observed at lower water-to-surfactant ratios. We also present and analyze the effect of zirconyl chloride on the micellar size distributions in this system. These type of salts are common for reverse micellar synthesis processes. We find that zirconyl chloride affects significantly the size distributions.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Citing Articles

View all 1 citing articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Dynamics of Water-in-Oil Nanoemulsions Revealed by Fluorescence Lifetime Correlation Spectroscopy
Angel Orte, Maria J. Ruedas-Rama, Jose M. Paredes, Luis Crovetto, and Jose M. Alvarez-Pez
Langmuir2011 27 (21), 12792-12799
- Dynamics of Water-in-Oil Nanoemulsions Revealed by Fluorescence Lifetime Correlation Spectroscopy
  Angel Orte, Maria J. Ruedas-Rama, Jose M. Paredes, Luis Crovetto, and Jose M. Alvarez-Pez
  Langmuir2011 27 (21), 12792-12799
  The size, diffusional properties, and dynamics of reverse water-in-oil nanoemulsions, or reverse micelles (RMs), have been widely investigated because of interest in this system as a model for biological compartmentalization. Here, we have employed ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links