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Title: Hydrogen bonding and miscibility behavior in poly[ethylene-co(acrylic acid)] and poly(N-vinylpyrrolidone) mixtures
Author: Nuno-Donlucas, S.
Puig, J.
Katime, I.
Issue Date: 2001
Abstract: The miscibility behavior promoted by hydrogen bonding interactions in mixtures of poly(N-vinylpyrrolidone) (PNVP) and a copolymer of ethylene/acrylic acid (PEAA-20) is studied by differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA) and infrared spectroscopy. Mixtures become immiscible when hydrogen-bonding interactions weaken. DMTA and dielectric relaxation spectroscopy reveal a sub-vitreous transition in the PVNP at about 52°C. This transition superimposes with the glass transition of PNVP-rich blends. © Wiley-VCH Verlag GmbH, 2001.
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