MOLECULAR MOTIONS AND PHASE-TRANSFORMATIONS IN SOLID 1-CYANOADAMANTANE - A THERMALLY STIMULATED DISCHARGE CURRENTS STUDY

The molecular motions associated with different phase transformations in the solid state of 1-cyanoadamantane have been studied by thermally stimulated discharge current technique (TSDC) and the obtained result s were compared with those obtained by other techniques namely differe ntial scanning calorimetry, nuclear magnetic resonance and dielectric relaxation spectroscopy. The transformations glassy phase (I-g) --> pl astic metastable (I'), plastic metastable (I') --> brittle (II) and br ittle (II) --> plastic stable (I) were analysed and the obtained resul ts confirmed the TSDC technique as a powerful tool to study order-diso rder transitions in molecular crystals.