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6677837 
Journal Article 
Degradation of polystyrene in supercritical acetone 
Hwang, GC; Kim, BK; Bae, SY; Yi, SC; Kumazawa, H; , 
1999 
Yes 
Journal of Industrial and Engineering Chemistry
ISSN: 1226-086X 
KOREAN SOC INDUSTRIAL ENGINEERING CHEMISTRY 
SEOUL 
5 
2 
150-154 
English 
WOS:000081158200012 
The degradation of polystyrene(PS) in supercritical acetone was carried out in the temperature range of 260 to 300 degrees C using a batch type autoclave reactor. The total conversion rapidly increased with the increase of temperature from 270 to 290 degrees C. The yield of non-aromatic condensates and the total conversion were affected little by the acetone density, which considerably influenced the product distribution. The yield of styrene was the highest among other products, when the weight ratio of acetone to PS was fixed at 11.2, which was equivalent to acetone density 0.406. The yields of styrene and diphenylbutene (equivalent to dimer of styrene) attained maximum values at a temperature in between 280 and 290 degrees C. 
Acetone; Degradation; Polystyrene; Supercritical fluid