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Formation kinetics and stability of surfactant vesicles
Author(s) -
Zhang Zhiqiang,
Ganzuo Li,
Patel Ramesh,
Friberg Stig E.,
Aikens Patricia A.
Publication year - 1998
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-998-0041-3
Subject(s) - chemistry , vesicle , pulmonary surfactant , microemulsion , kinetics , dilution , phase (matter) , phase diagram , chromatography , light scattering , thermodynamics , dynamic light scattering , analytical chemistry (journal) , chemical engineering , scattering , organic chemistry , biochemistry , physics , engineering , membrane , quantum mechanics , nanoparticle , optics
A three‐component phase diagram of a system containing water, dimethyl isosorbide and Laureth 4 (Brij ® 30), a commercial surfactant, was determined, and the kinetics of vesicle formation from dilution with water of the hydrotrope solution was studied using a stop‐flow process in conjunction with light‐scattering determinations. The phase diagram consisted of a large microemulsion phase and a lamellar liquid crystalline region. Results from the stop‐flow/light‐scattering determinations were tentatively interpreted using the Aniansson‐Kahlweit‐Zana theory of micellar relaxation for a system close to equilibrium. The interpretation indicated the vesicles to be formed by monomolecular buildup for surfactant concentrations less than 5%, while for vesicles formed at greater concentrations an agglomeration of vesicle fractions appeared more reasonable.