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Thermal and low‐field NMR study on poly(vinylidene fluoride) and their physical mixtures with poly(methyl methacrylate)
Author(s) -
Freire Estevão,
Bianchi Otavio,
Forte Maria Madalena C.,
Preto Mônica,
Monteiro Elisabeth E.C.,
Tavares Maria Inês B.
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21174
Subject(s) - materials science , poly(methyl methacrylate) , polymer , methyl methacrylate , mixing (physics) , polymer blend , methacrylate , composite material , fluoride , polymer chemistry , relaxation (psychology) , shear (geology) , chemical engineering , copolymer , inorganic chemistry , social psychology , psychology , chemistry , physics , quantum mechanics , engineering
Blends with various proportions of poly(vinylidene fluoride) (PVDF) and poly(methyl methacrylate) (PMMA) were prepared using melt mixing and studied by oscillatory mechanical measurements and low‐field NMR spectroscopy to evaluate the influence of the processing method. The polymers and its blends were processed using a conventional low shear mixing chamber (LSM) and a high shear mixer (HSM). The behavior of all blends lies among those of the pure components, considering the two methods of characterization, and the data suggest phase separation between the two components. The hydrogen spin‐lattice relaxation time of the PVDF/PMMA blends were measured and correlated with the components phases. The results are a contribution to data reported previously in the literature using different analytical methods. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers