Title :
The thermally stimulated surface potential of betaine type host-guest polymer films
Author :
Muzikante, I. ; Fonavs, E. ; Dobulans, R. ; Tokmakov, A. ; Stiller, B. ; Brehmer, L. ; Neilands, O.
Author_Institution :
Inst. of Phys. Energetics, Riga, Latvia
Abstract :
In this work betaine-type molecules were investigated. As a result of the asymmetry of charge distribution, molecules in the ground state have a considerable permanent dipole moment. The thermally stimulated surface potential dependences on poling temperature are investigated. The influence of α- and β-relaxations of PMMA on the surface potential of the film are shown. The thermal dependence of surface potential is discussed. The transition temperature, where no changes of the surface potential appeared, is related to glass transition temperature of the host-guest system.
Keywords :
dielectric polarisation; dielectric relaxation; dyes; electric moments; glass transition; ground states; polymer films; surface potential; surface topography; thermally stimulated currents; PMMA; betaine type host-guest polymer films; charge distribution asymmetry; glass transition temperature; ground state; permanent dipole moment; poling temperature; relaxation; surface roughness; thermal dependence; thermally stimulated surface potential; Atomic force microscopy; Corona; Electrets; Electrodes; Optical films; Polymer films; Rough surfaces; Surface roughness; Surface topography; Temperature;
Conference_Titel :
Electrets, 2002. ISE 11. Proceedings. 11th International Symposium on
Print_ISBN :
0-7803-7560-2
DOI :
10.1109/ISE.2002.1042990
