中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (1): 84-87.

• 研究论文 • 上一篇    下一篇

干相转换条件对致密皮层不对称膜结构及透气性能的影响

彭曦, 吴庸烈   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1993-06-20 修回日期:1993-10-20 出版日期:1994-02-10 发布日期:1994-02-10

Effects of Dry Phase Inversion Conditions on the Structure and Gas Pcrmeability of Integrally Skinned Asymmetric Membranes

Peng Xi, Wu Yonglie   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1993-06-20 Revised:1993-10-20 Published:1994-02-10 Online:1994-02-10

PDF

378

被引次数

2 | 1

摘要： 研究了挥发时间、温度等干相转换条件对聚芳醚砜致密皮层不对称膜形态结构、有效皮层厚度及氮、氢透过性能的影响。表明采用本铸膜液体系,在20℃左右,很短的挥发时间内即可制得较理想的气体分离膜。

关键词: 聚芳醚砜, 不对称膜, 干相转换, 气体分离

Abstract: lntegrally skinned asymmetric poly(ether sulfone)membranes were made by dry/wet phase inversion processes. The effects of the dry phase inversion conditions,e.g. evaporation time and temperature on the morphology and N2、H2 permeability of the membranes. were studied. The resuIts indicated that the structure of the membranes, thickness and density of the skin layer were all affected by the dry phase inversion conditions. Preferable membrane properties would be obtained by appropriately controlling the evaporation conditions. For the casting system used a shorter evaporation time and lower evaporation temperature (about 20℃) are in favour of making the membranes have better gas separation properties.

Key words: poly(ether sulfone), asymmetric membrane, dry phase inversion, gas separation

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