Naslov
The study of glass transition in epoxy resin by thermally stimulated depolarization current. Compensation phenomenon

Autori
Topić, Mladen

Izvornik
Thermochimica acta (0040-6031) 294 (1997), 2; 187-192

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
activation energy distribution; compensation phenomenon; epoxy resin; termally stimulated current

Sažetak
The pure and the cured epoxy resin was characterized by the integral and partial thermally stimulated depolarization current in the range of glass transition. The function of the activation energy vs. T obtained by use of the integral current curve I_i(T_i) by direct transition of points I_i into E_i showed only one linear course without peculiarities. The E(T) function obtained by use of series of the partial peaks showed several linear stages. The relaxation maps were drawn and the compensation points determined. The coordinates of compensation points for cured resin in comparison with the pure resin indicated a decrease in motion of the moving parts in resin during the curing. The relative numbers of the relaxing dipoles vs. activation energy were approximated.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA