THE ADIABATIC CALORIMETRY STUDY OF THE POLYMORPHISM OF SOLID 4,4'-DI-NORMAL-BUTYLOXYAZOXYBENZENE

Specific heat measurements for 4-OAOB using adiabatic calorimetry are presented in the temperature range 290 K to 380 K. In the solid state three anomalies are found in the specific heat curve, at 315.5 K, 323.3 K and 360.5 K. A new solid phase is found in addition to those previously reported. Some observations concerning the kinetics of the phase transitions are also presented. © 1990, Taylor & Francis Group, LLC. All rights reserved.