Mixed Micellization and Interfacial Properties of Polyoxyethylene Sorbitan Esters with Cetylpyridinium Chloride: A Tensiometric Study

In this work a surface tensiometric method was used to study the effect of the chain length of non-ionic surfactants, viz. ethoxylated sorbitan esters, on micellar composition, critical micellar concentration, mutual interaction parameter ( β 12 ), and activity coefficients of the mixed micelles for...

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Bibliographic Details
Published in:Journal of surfactants and detergents 2009-10, Vol.12 (4), p.295-304
Main Authors: Rehman, Nuzhat, Mir, Mohammad Amin, Jan, Musarat, Amin, Adil, Dar, Aijaz Ahmad, Rather, Ghulam Mohammad
Format: Article
Language:English
Subjects:
Activity coefficients
Aquatic Pollution
Chemistry
Chemistry and Materials Science
Esters
Ethoxylated sorbitan esters
Industrial Chemistry/Chemical Engineering
Interaction parameter
Interfacial properties
Mixed micellization
Original Article
Physical Chemistry
Polymer Sciences
Solvents
Surface chemistry
Surface tension
Surfaces and Interfaces
Surfactants
Thin Films
Waste Water Technology
Water Management
Water Pollution Control
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Summary:In this work a surface tensiometric method was used to study the effect of the chain length of non-ionic surfactants, viz. ethoxylated sorbitan esters, on micellar composition, critical micellar concentration, mutual interaction parameter ( β 12 ), and activity coefficients of the mixed micelles formed with the cationic surfactant cetylpyridinium chloride at 25 °C. The micellar characteristics evaluated using the Clint, Rubingh, and Blankschtein models deviated significantly from ideality, and were used to ascertain the validity of these theories. Thermodynamic stability in terms of Maeda’s approach and interfacial properties is also discussed.
ISSN:1097-3958
1558-9293
DOI:10.1007/s11743-009-1123-9