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Miscibility of poly(vinyl chloride)/poly(ethylene oxide) blends—I. Thermal properties and solid state 13C-NMR study

✍ Scribed by C. Marco; M.A. Gömez; J.G. Fatou; A. Etxeberria; M.M. Elorza; J.J. Iruin

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
383 KB
Volume
29
Category
Article
ISSN
0014-3057

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✦ Synopsis

Blends of poly(vinyl chloride), PVC, and poly(ethylene oxide), PEO, have been studied for a complete range of composition, by differential scanning calorimetry and high-resolution solid state t3C-NMR spectroscopy. Proton spin-lattice relaxation times in the rotating frame, T~p(H), as well as calorimetric data indicate miscibility of the components of these blends in the amorphous phase for mixtures containing />40% PVC. In this range of composition and from the melting point depression for PEO in the mixtures, the binary interaction parameter is found to be -0.094.

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