AbstractThe use of combined modes of thermal analysis by differential thermal analysis (DTA), thermomechanical analysis, and thermal depolarization analysis (TDA) presents a more illustrative picture of the phase transitions and behavior of the allotropes of sulfur. Volumetric changes suggest theTgof polymeric sulfur to occur at 35°C. Changes in depolarized light level and an abrupt change in volume at 77°C identify this change as a first‐order fusion. The depolarized light behavior of sulfur, which has been quenched from 200°C to −190°C, illustrates the probable existence of a mesomorphic state of sulfur between 100° and 122°C. Polymeric sulfur is thermally bleached ne
展开▼
