Poly(vinylidene fluoride)/nickel nanocomposites from semicrystalline block copolymer precursors.

Exceptionally High Negative Electro-Caloric Effects of Poly(VDF–co–TrFE) Based Nanocomposites Tuned by the Geometries of Barium Titanate Nanofillers

Exceptionally high electro-caloric effects (ECEs) are observed in nanocomposites consisting of poly(vinylidene fluoride-co-trifluoroethylene) (VDF–co–TrFE) copolymer and barium titanate (BT) nanoparticles and nanowires. The poly(VDF–co–TrFE) matrix nanocomposites containing 5% volume fraction of BT nanowires are found to exhibit a negative ECE temperature change as large as 12 ◦C or a refrigera...

Adsorbate/absorbate interactions with organic ferroelectric polymers

We discuss the interactions of adsorbates with the organic ferroelectric copolymer poly(vinylidene fluoride (PVDF)–trifluoroethylene (TrFE)). Range of molecular adsorbates is discussed from the smaller polar molecules like water, which is small enough to both adsorb and absorb, to the larger macrocyclic metal–organic metal phthalocyanines. The changes in local dipole orientation may affect the ...

Revisiting the δ-phase of poly(vinylidene fluoride) for solution-processed ferroelectric thin films.

Ferroelectric poly(vinylidene-fluoride) (PVDF) has, in the past, been proposed as an ideal candidate for data storage applications as it exhibits a bistable, remanent, polarization that can repeatedly be switched by an electric field. However, fabrication of smooth ferroelectric PVDF thin films, as required for microelectronic applications, is a long-standing problem. At present, the copolymer ...

High field properties and energy storage in nanocomposite dielectrics of poly(vinylidene fluoride-hexafluoropropylene)

of poly(vinylidene fluoride-hexafluoropropylene) V. Tomer, E. Manias, and C. A. Randall Center of Dielectric Studies (CDS), Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802, USA Polymer Nanostructrures Lab—Center for the Study of Polymeric Systems (CSPS), The Pennsylvania State University, University Park, Pennsylvania 16802, USA Department o...

Aluminum doping of poly(vinylidene fluoride with trifluoroethylene) copolymer