Micellar structure of an ethylene oxide-propylene oxide block copolymer: a small-angle neutron scattering study
Article Abstract:
Small-angle neutron scattering is used in studying the micellar structure of an ethylene oxide-propylene oxide triblock copolymer, pluronic F88, in aqueous solution. The role of various electrolytes on the phase behavior of the micelles has also been examined. Block copolymers have inverse solubility-temperature relationships and undergo phase separation at the cloud point. Results indicate that a 5 wt % F88 solution in water contains unimers that are fully dissolved Gaussian chains when the temperature is less than 30 degrees C. Block copolymers form micelles with a central core at ambient temperatures.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Selenium nanoparticles: a small-angle neutron scattering study
Article Abstract:
Research was conducted to examine the growth process of selenium nanoparticles using different techniques. The nanoparticles were prepared through a reverse micelle method and characterized using optical spectroscopy, X-ray diffraction and transmission electron microscopy. The small-angle neutron scattering approach was used to examine the micelle structure. Results prove that the micelle structure was unaffected by the conditions of the reaction.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Small-angle neutron-scattering and viscosity studies of CTAB/NaSal viscoelastic micellar solutions
Article Abstract:
A study was conducted to analyze the viscoelastic characteristics of micellar solutions of cationic surfactant cetyltrimethylammonium bromide during the presence of sodium salicylate. The solutions were examined as a function of NaSal concentration at different surfactant temperatures. Experimental results indicated that the micelles behaved as living polymers beyond the first viscosity maximu.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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