Interaction between poly(ethylene oxide) and sodium dodecyl sulfate studied by neutron reflection
Article Abstract:
Neutron specular reflection was used in determining the composition of the air/solution interface of aqueous mixtures of sodiumdodecyl sulfate (NaDS) and poly(ethylene oxide) (PEO) as a function of NaDS concentration and at a fixed concentration of 0.1 wt % PEO. In the presence of polymer, the adsorption of NaDS at the air/solution interface at all concentrations was less than that in the corresponding solutions without polymer. Results demonstrate cooperativity in the adsorption of surfactant and polymer at the interface.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Investigation of mixing in binary surfactant solutions by surface tension and neutron reflection: strongly interacting anionic/zwitterionic mixtures
Article Abstract:
Surface tension and neutron reflection are used in studying mixing of aqueous solutions of the strongly interacting anionic/zwitterionic surfactant mixture of sodium dodecyl sulfate (SDS) and dodecyl dimethylamino acetate (C12betaine). Results show that mixing between SDS and C12betaine is a accompanied by a large change in volume. The interaction parameter for micellization was found to be large and negative. It was also observed to be composition dependent and does not follow first-order approximation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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A study of the interactions in a ternary surfactant system in micelles and adsorbed layers
Article Abstract:
A study was conducted to analyze the micellization and interfacial adsorption of ternary surfactant mixtures supporting sodium dodecyl sulfats, n-dodecyl-N,N-dimethylaminoacetate and n-dodecyl-beta-D-maltoside. An extended pseudophase separation framework for nonideal mixing was utilized to determine the critical micelle concentrations for the mixtures. Results indicated that the use of an empirically derived parameter generated better predictions of compositions from surface tension data.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
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