The Solubility of Styrene from Polystyrene in Supercritical CO_2  

作　　者：蒋春跃 潘勤敏 潘祖仁 

出　　处：《Chinese Journal of Chemical Engineering》1998年第3期55-63,共9页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China.

摘　　要：The solubility of styrene from polystyrene in supercritical carbon dioxide is measuredat 323 K,333 K,and 343 K in the pressure range from 12 to 28 MPa.Based on the associationconcept and the theory of dense gas sorption in polymers,a displacement and association mechanismon supercritical fluid extraction of the monomer from the polymer is proposed.And,a novel math-ematical model for correlating the solubility data obtained from the experiments is also proposed inthe paper.The solubility of styrene from polystyrene in supercritical carbon dioxide is measured at 323 K, 333 K, and 343 K in the pressure range from 12 to 28 MPa. Based on the association concept and the theory of dense gas sorption in polymers, a displacement and association mechanism on supercritical fluid extraction of the monomer from the polymer is proposed. And, a novel mathematical model for correlating the solubility data obtained from the experiments is also proposed in the paper.

关 键 词：SUPERCRITICAL fluid extraction SUPERCRITICAL carbon dioxide equilibrium SOLUBILITY polymer PURIFICATION STYRENE 

分 类 号：TQ316.34[化学工程—高聚物工业]