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Your search keyword '"MANGIAPIA, GAETANO"' showing total 12 results
Start Over Author "MANGIAPIA, GAETANO" Publisher springer science and business media llc
12 results on '"MANGIAPIA, GAETANO"'

12. Interaction of Poly(vinyl alcohol) with Poly(acrylic acid) and with Sodium Polyacrylate in Aqueous Solutions: A Volumetric Study at 25 °C

Author

Gaetano Mangiapia, Roberto Sartorio, Gerardino D'Errico, Alessandro Molisso, Molisso, Alessandro, Mangiapia, Gaetano, D'Errico, Gerardino, and Sartorio, Roberto

Subjects
Vinyl alcohol, Aqueous solution, Sodium polyacrylate, polymer, Sodium, Inorganic chemistry, Biophysics, Analytical chemistry, interaction, chemistry.chemical_element, Biochemistry, chemistry.chemical_compound, Molar volume, chemistry, Sodium hydroxide, Microemulsion, Physical and Theoretical Chemistry, aqueous solution, Molecular Biology, Acrylic acid
Abstract

The infinite dilution partial molar volumes $\bar{V}^{\infty}$ of poly(acrylic acid), at different degrees of neutralization α N with sodium hydroxide, have been experimentally determined in aqueous solutions. Analysis of the data indicates that, to a good approximation, the observed decrease of $\bar{V}^{\infty}$ with α N can be interpreted in terms of the electrostriction of the water molecules involved in the hydration cospheres of the –RCOO− groups. The presence of PVA does not significantly affect the value of $\bar{V}^{\infty}$ for the undissociated acid, but causes a large decrease for the sodium salt. This aspect has been discussed in terms of direct interaction between the two polymers.

Published
2010
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