X-RAYS INSITU INVESTIGATIONS ON MESOPHASE FORMATION DURING CARBONIZATION OF DECACYCLENE

Decacyclene undergoes a phase transition phi //1 yields phi //2 near 300 degree C. This transition is reversible; however, if temperature is maintained at 300 degree C the molecule is damaged and when weight loss reaches 5% the transition becomes irreversible and the phi //2 high temperature phase remains stable at room temperature. TEM investigations assign the Brooks and Taylor structure to these spheres.