The pH within PFPE reverse micelles formed in supercritical CO2
Article Abstract:
The pH within the surfactant ammonium carboxylate perfluoropolyether reverse micelles formed in supercritical carbon dioxide was determined quantitatively using a fluorescent probe. The probe, dubbed Cl-NERF, exhibits a pH-sensitive excitation spectrum and locates preferentially within the aqueous core region of the reverse micelle. The effect of carbon dioxide continuous phase pressure and micelle water loading on the pH within the surfactant ammonium carboxylate water pool was also examined.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Precision relative aggregation number determinations of SDS micelles using a spin probe. A model of micelle surface hydration
Article Abstract:
A study was conducted to characterize a spin-probe technique that can identify changes in the relative aggregation number in SDS micelles with an accuracy of about one molecule. The technique is based on the sensitivity of the 14N hyperfine coupling constant to the average fraction of the volume occupied by water in nitroxide moiety. In addition, the water fraction was represented against a hydration number per surfactant molecule.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Molecular dynamics simulations of the interior of aqueous reverse micelles
Article Abstract:
The properties of a simple molecular model for the interior of an aqueous reverse micelle have been analyzed. Water creates distinct molecular layers at the interface that are bound to the surface ions and characterized by reduced mobility and hydrogen bonding.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
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