CALCULATION OF CRITICAL POINTS FOR LINEAR POLYETHYLENE-PROPANE SYSTEM UNDER SUPERCRITICAL CONDITIONS

谭立扬

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CALCULATION OF CRITICAL POINTS FOR LINEAR POLYETHYLENE-PROPANE SYSTEM UNDER SUPERCRITICAL CONDITIONS

更新时间：2025-12-16

- CALCULATION OF CRITICAL POINTS FOR LINEAR POLYETHYLENE-PROPANE SYSTEM UNDER SUPERCRITICAL CONDITIONS
- CIESC Journal Issue 4, (1992)
- 作者机构：
  
  北京工业大学环境化学系,北京,100022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 August 1992，
  
  Published：25 August 1992
- 稿件说明：
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谭立扬. CALCULATION OF CRITICAL POINTS FOR LINEAR POLYETHYLENE-PROPANE SYSTEM UNDER SUPERCRITICAL CONDITIONS[J]. CIESC Journal, 1992, (4).
DOI：

谭立扬. CALCULATION OF CRITICAL POINTS FOR LINEAR POLYETHYLENE-PROPANE SYSTEM UNDER SUPERCRITICAL CONDITIONS[J]. CIESC Journal, 1992, (4). DOI：

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.

Abstract

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) .

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