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Ferroelectric, pyroelectric and dielectric properties were investigated for Form IV poly(vinylidene fluoride) (PVDF). We fabricated highly crystalline Form II thin films by spin-casting from acetone or methyl ethyl ketone followed by annealing at 155 °C and then converted into Form IV using a high electric field of 500 MV/m. We observed displacement (D) - electric field (E) hysteresis loop and attendant...
Two-component hyperbranched copolymers were prepared by the living anionic polymerization technique. The first-generated polystyrene (PS) stars (1G-S) were prepared by copolymerization of poly(4-methylstyrene)-block-polystyrene diblock anions with divinylbenzene. The peripheral 4-methylstyrene blocks in the arm were metalated with s-butyllithium/tetramethylethylenediamine complex in cyclohexane. The...
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