CONFINING PVDF IN DYNAMICALLY ASYMMETRIC BLENDS AND ALL-POLYMER NANOCOMPOSITES
PVDF in its beta-phase is a ferroelectric polymer with interest for data storage. Neat PVDF films generally crystallize in the non-ferroelectric alpha-phase. Blending with PMMA, the beta-phase can be produced. However, almost nothing is known about: (i) the dynamics of PDVF in the blends with different compositions; (ii) how this dynamics can affect the formation of the different crystalline phases; and (iii) whether the confinement and heterogeneous effects reported for PEO in PEO/PMMA and in PEO/PMMA-based-SCNPs can also be observed for PVDF in PVDF/PMMA and in PVDF/PMMA-based-SCNPs ('universality'). Here, we want to characterize the self-atomic motions of amorphous PVDF in blends with linear PMMA and nano-composites with PMMA-based SCNPs. For high PMMA contents we want to explore the analogies with PEO/PMMA systems, to confirm the universality of the phenomenology found attributed to (i) confinement by a surrounding amorphous rigid matrix, and (ii) trapping of segments by internal loops of the SCNPs. For low PMMA concentrations --the phase of interest for applications-- the effects of additional confinement by the own crystalline fraction shall be characterized.
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MAIZ Jon; APPEL Markus; Arantxa Arbe; COLMENERO Juan; Bernhard Frick and MANGIN-THRO Lucile. (2020). CONFINING PVDF IN DYNAMICALLY ASYMMETRIC BLENDS AND ALL-POLYMER NANOCOMPOSITES. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1948
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