STUDY ON THE SOLUBILITY AND TRANSPORT PHENOMENA OF ALCOHOL AND WATER IN POLYIMIDE MEMBRANES (Ⅱ) CORRELATION OF SOLUBILITY AND TRANSPORT PROPERTIES OF ALCOHOL AND WATER IN MEMBRANES

李军; 许振良; 刘洪来; 胡英

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STUDY ON THE SOLUBILITY AND TRANSPORT PHENOMENA OF ALCOHOL AND WATER IN POLYIMIDE MEMBRANES (Ⅱ) CORRELATION OF SOLUBILITY AND TRANSPORT PROPERTIES OF ALCOHOL AND WATER IN MEMBRANES

更新时间：2025-12-16

- STUDY ON THE SOLUBILITY AND TRANSPORT PHENOMENA OF ALCOHOL AND WATER IN POLYIMIDE MEMBRANES (Ⅱ) CORRELATION OF SOLUBILITY AND TRANSPORT PROPERTIES OF ALCOHOL AND WATER IN MEMBRANES
- CIESC Journal Issue 5, (1997)
- 作者机构：
  
  华东理工大学化学系,华东理工大学化学系,华东理工大学化学系,华东理工大学化学系上海 200237,上海 200237,上海 200237,上海,200237
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q202
- Online First：25 October 1997，
  
  Published：25 October 1997
- 稿件说明：
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李军, 许振良, 刘洪来, et al. STUDY ON THE SOLUBILITY AND TRANSPORT PHENOMENA OF ALCOHOL AND WATER IN POLYIMIDE MEMBRANES (Ⅱ) CORRELATION OF SOLUBILITY AND TRANSPORT PROPERTIES OF ALCOHOL AND WATER IN MEMBRANES[J]. CIESC Journal, 1997, (5).
DOI：

李军, 许振良, 刘洪来, et al. STUDY ON THE SOLUBILITY AND TRANSPORT PHENOMENA OF ALCOHOL AND WATER IN POLYIMIDE MEMBRANES (Ⅱ) CORRELATION OF SOLUBILITY AND TRANSPORT PROPERTIES OF ALCOHOL AND WATER IN MEMBRANES[J]. CIESC Journal, 1997, (5). DOI：

摘要

用Flory-Huggins溶液模型加Langmuir吸附模型的双重模式理论关联了前文测得的乙醇和水在聚酰亚胺膜中的平衡溶解度

根据吸收/解吸数据求取了扩散系数

溶解度系数及渗透率;用无限稀释理想分离因子评价渗透蒸发膜的分离性能.结果表明

聚酰亚胺中加入交联剂后

乙醇和水的扩散系数和渗透率都有明显的减小

但其无限稀释理想分离因子有所提高

分离性能有较大的改善.

Abstract

The equilibrium solubility of alcohol and water in two polyimide membranes measured in a previous work is correlated by the dual - mode theory with Flory-Huggins solution model and Langmuir adsorption model. Diffusion coefficient - concentration relations are evaluated from experimental sorption and desorption curves. Solubility coefficients

permeabilities are then obtained. The infinite dilution ideal separation factor is used for the appraisal of separation performance of pervaporation membrane. It is shown that the diffusion coefficients and permeabilities of alcohol and water in the membrane containing crosslinking agent are less than in that without crosslinking agent. However

the infinite dilution ideal separation factors in the former are larger than that in the latter. The results indicate that the crosslinking agent can improve the performance of polyimide membrane for the separation of alcohol and water.

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