Title :
Dielectric properties of polystyrene doped with DR1 guest molecules
Author :
Fedosov, S.N. ; Pissis, P. ; Giacometti, J.A. ; Costa, M.M. ; Sergeeva, A.E.
Author_Institution :
Dept. of Phys., Odessa Technol. Inst., Ukraine
Abstract :
It has been shown that presence of DR1 molecules affects the α relaxation behaviour of a host polymer in such a way that the distribution of relaxation times becomes wider, the dielectric constant and the dielectric strength increase, while the dopant shows a definite plasticizing effect. It has been found that the PS/DR1 system is not a thermoreologically simple one. It is probable therefore that the β processes in polystyrene influence relaxation behavior of the chromophore molecules at sub-Tg temperatures
Keywords :
dielectric relaxation; permittivity; polymers; thermally stimulated currents; α relaxation; DR1 guest molecules; chromophore molecules; dielectric constant; dielectric strength; plasticizing effect; polystyrene; relaxation times; Amorphous materials; Dielectric measurements; Electrochemical impedance spectroscopy; Isothermal processes; Nonlinear optics; Optical harmonic generation; Optical polymers; Physics; Stability; Temperature;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832144
