摘要
根据Koningsveld等人推广的Flory-Huggins关于高聚物溶液理论,提出了用聚乙烯-丙烷体系标样的超临界流体相平衡浊点线实验值来模拟计算临界点的方法.结果表明,该计算方法简便,计算结果与实验数据基本相符.
In terms of the Flory-Huggins' polymer solution theory as extended by Koningsveld and Kleintjens, an algorithm for calculating critical points based on experimental cloud point curves has been developed for the polyethylene-pfopane system. Results suggest that the method developed in this work can be easily used and the calculated critical points agree fairly well with the experimental data in the concentration range less than 10% (weight). In engineering design the method can be used to estimate critical points and cloud point curves in supercritical fluid fractionation of polymers (polyethylene-propane) .
出处
《化工学报》
EI
CAS
CSCD
北大核心
1992年第4期489-495,共7页
CIESC Journal
关键词
聚乙烯
丙烷
浊点线
临界点
旋节线
linear polyethylene-propane system, supercritical condition, cloud point, critical point, spinodal
