Citation: . SOLID PHASE TRANSITION OF SYNDIOTACTIC POLYSTYRENE IN SUPERCRITICAL CO2[J]. Chinese Journal of Polymer Science, ;2002, 20(3): 191-196. shu

SOLID PHASE TRANSITION OF SYNDIOTACTIC POLYSTYRENE IN SUPERCRITICAL CO2

Received Date: 17 February 2002
Revised Date: 28 February 2002

Solid phase transition of the a form crystals to the β form crystals in syndiotactic polystyrene (sPS) samples hasoccurred in supercritical CO2. This transformation is different from those detected under other conditions. The effects ofsome factors (e.g time, temperature, and pressure) on the solid phase transformation of sPS in supercritical CO2 wereanalyzed in detail. Experimental results show that longer time, higher temperature or higher pressure favors the transformation of the α form crystals to the β form crystals.
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