Mixed Micelles Formed by n-Octyl-β-d-glucopyranoside and Tetradecyltrimethylammonium Bromide in Aqueous Media

Speed of sound, density, conductivity, and fluorescence spectroscopy experiments were run to analyze the mixed aggregation process of a nonionic−cationic surfactant system in aqueous media at 298.15 K. The mixed system comprises a nonionic surfactant, n-octyl-β-d-glucopyranoside (OBG), and a cationi...

Full description

Saved in:
Bibliographic Details
Published in:Langmuir 2004-07, Vol.20 (14), p.5745-5752
Main Authors: Lainez, Alfredo, del Burgo, Patricia, Junquera, Elena, Aicart, Emilio
Format: Article
Language:English
Subjects:
Electric Conductivity
Glucosides - chemistry
Micelles
Sensitivity and Specificity
Spectrometry, Fluorescence
Thermodynamics
Trimethyl Ammonium Compounds - chemistry
Water - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Speed of sound, density, conductivity, and fluorescence spectroscopy experiments were run to analyze the mixed aggregation process of a nonionic−cationic surfactant system in aqueous media at 298.15 K. The mixed system comprises a nonionic surfactant, n-octyl-β-d-glucopyranoside (OBG), and a cationic surfactant, tetradecyltrimethylammonium bromide (C14TAB), with 8 and 14 carbon atoms on the hydrophobic tails, respectively. From these data, the total and partial critical micellar concentrations, the total and partial aggregation numbers, apparent molar volumes and isentropic compressibilities, hydration numbers, and the corresponding changes in the latest properties due to the mixed aggregation process were determined. Pure and mixed micelles were analyzed from a geometrical point of view by determining the packing parameter of the aggregates. Furthermore, the experimental characterization of both the monomeric and micellar phases was completed with a theoretical study of the mixed micellization phenomena studied herein, by means of some of the most relevant theoretical models.
ISSN:0743-7463
1520-5827
DOI:10.1021/la049929d