Dissolution of Lamellar Phases

Dissolution of surfactant liquid crystals is an important process both at the manufacturing stage of surfactant based formulated products and during their use. Dissipative particle dynamics simulations were employed to study the production of surfactant–oil–water systems under both temperature and w...

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Bibliographic Details
Published inThe journal of physical chemistry. B Vol. 115; no. 34; pp. 10218 - 10227
Main Authors Rodgers, Thomas L, Mihailova, Olga, Siperstein, Flor R
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 01.09.2011
Subjects
B: Surfactants, Membranes
Dissolution
Dynamic tests
Dynamical systems
Dynamics
Micelles
Oscillations
Phases
Surfactants
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Summary:Dissolution of surfactant liquid crystals is an important process both at the manufacturing stage of surfactant based formulated products and during their use. Dissipative particle dynamics simulations were employed to study the production of surfactant–oil–water systems under both temperature and water quenches. Upon the dissolution of a high concentration lamellar phase surfactant, wormlike micelles are formed, which differ from the spherical micelles produced at the same concentration with a temperature quench. The surfactant molecules have a tendency to remain within their initially formed lamellar phase sheets and just rearrange into wormlike micelles. When a hydrophobic additive (oil) is added to the initial system, longer cylindrical micelles are formed, with the creation of some spherical micelles under dissolution. These micelles detach from the long cylinders as a result of their natural oscillations.
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ISSN:1520-6106
1520-5207
DOI:10.1021/jp111464b