Title :
Morphology and structure of polymer electrets and ferroelectric polymers
Author_Institution :
Inst. Laue-Langevin, Grenoble, France
fDate :
6/1/1993 12:00:00 AM
Abstract :
The author considers how the heterogeneous microstructure of semicrystalline polymers used in electret applications can influence the mechanisms of charge trapping and charge transport. The crystallization of polymer chains is described, and the control of the semicrystalline morphology is discussed. Ferroelectric properties essentially controlled by the structure of the crystals are described
Keywords :
crystallisation; dielectric hysteresis; dielectric relaxation; electrets; ferroelectric materials; glass transition (polymers); polymer structure; polymers; PTFE; PVDF; charge transport; charge trapping; copolymers; dielectric relaxation; ferroelectric polymer structure; glass transition temperature; heterogeneous microstructure; hysteresis loop; poly(tetrafluoroethylene); poly(vinylidenefluoride); polymer chain crystallisation; polymer electrets; semicrystalline morphology; semicrystalline polymers; Amorphous materials; Crystal microstructure; Crystalline materials; Crystallization; Dielectric losses; Electrets; Ferroelectric materials; Optical microscopy; Polymers; Surface morphology;
Journal_Title :
Electrical Insulation, IEEE Transactions on
