Polarization reversal of aliphatic polyurethane above the glass transition temperature

説明

In this report, the J(current)-E(electric field) hysteresis of hydrogen bonded polymers is discussed. The selected hydrogen bonded polymers are polyurethane copolymers. These copolymers are slightly crystalline. The remanent polarization is observed above the glass transition temperature through the transformation of a J-E hysteresis curve to a D(electric displacement)-E hysteresis one. The observation suggests a possibility of liquid ferroelectrics far from amorphous ferroelectrics.

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