Polarization reversal of aliphatic polyurethane above the glass transition temperature

Author

Yuki, Toshinao ; Shida, Kazuhisa ; Koda, Tomonori ; Ikeda, Susumu

Author_Institution

Dept. of Mater. Sci. & Eng., Yamagata Univ., Yonezawa, Japan

fYear

1999

fDate

1999

Firstpage

675

Lastpage

677

Abstract

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

Keywords

dielectric hysteresis; dielectric liquids; dielectric polarisation; ferroelectric materials; ferroelectric switching; glass transition; hydrogen bonds; polymer blends; polymer structure; J-E hysteresis curve; aliphatic polyurethane; copolymers; current-electric field hysteresis; glass transition temperature; hydrogen bonded polymers; liquid ferroelectrics; polarization reversal; remanent polarization; Amorphous materials; Bonding; Crystallization; Ferroelectric materials; Glass; Hydrogen; Hysteresis; Polarization; Polymers; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-5025-1

Type

conf

DOI

10.1109/ISE.1999.832136

Filename

832136