TITLE

Interaction water-polyethyleneglycols: Determination of hydration parameters from hydrodynamic data

AUTHOR(S)
Donato, Ines D.; Agozzino, Pasquale; Perzia, Patrizia
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 513 Issue 1, p110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Densities, viscosities and refractive indexes of diluted aqueous solutions of polyethylene glycols (Mw=200-6000) are determined at 25 °C. The non-linear increase of viscosity B and C coefficients with the number of ethylenoxide (EO) units are discussed. The solvation (hydration) becomes dominant when the number of ethylenoxide group increases. The hydration parameter, ω, the specific increment of density, dd[sub s]/dc, and of refractive index, dn[sub D]/dc, for the various PEGs are the consequence of dimension and of conformation that assumes the polymer. © 2000 American Institute of Physics.
ACCESSION #
6028479

 

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