膜科学与技术

溶剂挥发法制备聚醚共聚酰胺/乙二醇苯醚凝胶膜及其CO2/N2分离性能研究

作者：顾瑾，张鹏，白云翔，张春芳，孙余凭

单位：江南大学食品胶体与生物技术教育部重点实验室化学与材料工程学院

关键词：凝胶膜；乙二醇苯醚；气体分离

出版年,卷(期):页码： 2015,35(5):58-63

摘要：

本文通过溶剂挥发法成功制备了具有高渗透高选择性的聚醚共聚酰胺/乙二醇苯醚（PEBA/EPH）凝胶膜，并研究了EPH含量对凝胶膜理化性质以及气体渗透选择性能的影响。结果表明，PEBA/EPH凝胶膜具有良好的机械性能，EPH的加入使得膜密度上升，相对结晶度降低。随着凝胶膜中EPH含量的增加，CO2渗透系数以及CO2/N2理想选择性均显著提高，当EPH含量为60 wt%时，凝胶膜的CO2渗透系数增加到352.96 barrer，同时CO2/N2理想选择性增加到85.67。

High permeability and selectivity PEBA/EPH gel membranes were prepared by solvent evaporation method. The effect of EPH content on the microstructure, properties and performance of these gel membranes was discussed. Added by EPH, a favorable mechanical property of PEBA/EPH gel membranes was showed with an obvious increase of membrane density and a decrease of relative crystallinity. The increase of EPH content leaded to a significant increase in permeability coefficients of CO2 and the ideal selectivity of CO2/N2. When the EPH content increased to 60 wt%, the CO2 permeability improved to 352.96 barrer and the ideal selectivity of CO2/N2 reached to 85.67.

顾瑾（1972-），女，教授，研究方向为气体分离膜

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