Hydration of poly(ethylene oxide)s in aqueous solution as studied by dielectric relaxation measurements
Article Abstract:
Frequency (omega) domain dielectric relaxation measurements are used to investigate the hydration state of poly(ethylene oxide)s in aqueous solutions. The results have shown that water molecules hydrated to ethylene oxide units possessing the lifetime of hydration significantly longer than the relaxation time of coexisting bulk water molecules, which keep dielectric relaxation strength greater than that of the bulk water molecules.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Dilational viscoelasticity of polyelectolyte/surfactant adsorption films at the air/water interface: Dodecyltrimethylammonium bromide and sodium poly(styrenesulfonate)
Article Abstract:
The dynamic surface elasticity of mixed aqueous poly(styrenesulfonate)/alkyltrimethylammonium bromide solutions is measured by the oscillating barrier, oscillating drop, and capillary wave methods as a function of time and surfactant concentration. It was found that at low surfactant concentrations (less than 0.3 mM) the surface viscoelastic behavior is close to that of relatively concentrated pure PSS solutions.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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