Transition diagrams for a liquid crystalline thermoset containing a rigid-rod epoxy

The liquid crystalline thermoset monomers 4,4′-diglyci-dyloxy- α-methylstilbene (DOMS) and D2A1 that resulted from the reaction between DOMS and aniline were synthesized. DOMS was cured with sulfanilamide and D2A1 was cured with catalytic curing agent 1-methyl imidazole. Transition diagrams have been constructed and the percent conversion data were determined from dynamic differential scanning calorimetry scan to examine the applicability of Flory's gelation theory. The results reveal that even though the amount of reaction that occurs in the liquid crystalline phase is different at different cure temperatures, the isoconversion theory of gelation fits quite well.