Reentrant three-phase equilibrium of homologous polystyrene solution
Reentrant three-phase equilibrium of homologous polystyrene solution
复制标题
同系聚苯乙烯溶液的重入三相平衡
DOI：
10.1143/jpsj.69.1741
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发表时间：
2000
影响因子：
1.7
通讯作者：
M. Nakata
中科院分区：
文献类型：
--
作者：
Masato Suzuki;T. Dobashi;Yoshihisa Mikawa;K. Yamamura;M. Nakata
研究了三种不同分子量的聚苯乙烯同系物在甲基环己烷中的相平衡行为。用折射率法首次观察到了可重入的三相平衡。低分子量聚苯乙烯在甲基环己烷中的二元体系在临界温度附近出现了低三相区。所观察到的相平衡行为的特性进行了比较，使用广义Flory-Huggins理论与经验确定的相互作用参数的计算。
Phase equilibrium behavior was studied for a four-component system which consists of three polystyrene homologs with different molecular weights in methylcyclohexane. By using a refractive index method, a reentrant three-phase equilibrium was observed for the first time. The lower three-phase region appeared near the critical temperature of the binary system of polystyrene with the lowest molecular weight in methylcyclohexane. The characteristics of the observed phase equilibrium behavior was compared with the calculation using a generalized Flory-Huggins theory with an empirically determined interaction parameter.