SPHERULITIC STRUCTURES OF 1, 4-DIAMINOANTHRAQUINONE CRYSTALLIZED IN POLYSTYRENE

Abstract

The polystyrene films containing 1, 4-diaminoanthraquinone dye were examined with an optical microscope during heating and cooling at constant rates. Spherulitic structures were observed which were composed of needle-like crystallites of the dye in the cooling process. Size of these spherulites increased with increasing dye content and with decreasing cooling rate. Size of crystallites formed in cooling process was larger than that formed in heating process.