A small-angle neutron scattering study of a shear-induced vesicle to micelle transition in surfactant mixtures
Article Abstract:
The effect of shear on the three regions of the phase diagram concerning micelle transition in surfactant mixtures was investigated using a small-angle neutron scattering technique. The three regions concerned are the vesicle phase, the coexisting vesicle-micelle phase and the supposed worm-like micellar phase. Experimental results showed that an increase in temperature and/or the addition of cetyltrimethylammonium bromide stimulates a vesicle to micelle transition.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Comparison of the calorimetric and van't Hoff enthalpy of micelle formation for a nonionic surfactant in H2O and D2O solutions from 15 to 40 degrees C
Article Abstract:
A study was conducted to analyze the thermodynamics of micelle formation for a nonionic surfactant, dodecyldimethylphosphine oxide. An ultrasensitive titration microcalorimeter was utilized to carry out the thermodynamic studies. The solutions of surfactant were prepared by mass in deionized water. Results indicated that heat capacity changes determined for micelle formation from the calorimetric enthalpy change were within experimental error.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Mixtures of nonionic and ionic surfactants: determination of mixed micelle composition using cross-differentiation relations
Article Abstract:
A study was conducted to characterize the dynamics of cationic and nonionic surfactants in mixed micelles. Cross-differentiation relations were utilized in thermodynamics to describe the behavior. The reference electrode of the calomel was protected from amphiphile diffusion by a saline agar-agar gel. Experimental results indicated that the nonionic surfactant supported the saMe chemical potential throughout the solution.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
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