Title :
Some factors affecting the location of the (above Tg) peak in thermally stimulated depolarization currents in polystyrene
Author_Institution :
INSTITUT Charles SADRON (CRM-EAHP) CNRS-ULP Strasbourg 6, rue Boussingault, 67083 Strasbourg-Cedex, France
Abstract :
For polystyrene, independent measurements of dielectric relaxation time T determined from the TSD p peak and of conductivity a show that the relation στ= εoε holds. Space charge p peaks are known to be hard to reproduce in TSD experiments. Factors such as electrode− sample contact, applied voltage, sample preparation and number of free charge carriers are examined separately and lead to consistent results. In polystyrene containing 1% sodium acetate segregation occurs at high temperature and the ρ peak resembles that of the parent polystyrene. When the salt is well dispersed this is no longer the case.
Keywords :
"Plastics","Temperature measurement","Electrodes","Charge carriers","Sodium","Temperature dependence","Conductivity"
Conference_Titel :
Electrets (ISE 5), 1985 5th International Symposium on
Print_ISBN :
000-0-0000-0000-0
DOI :
10.1109/ISE.1985.7341497