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Citation: Peng Xi, Wu Yonglie. Effects of Dry Phase Inversion Conditions on the Structure and Gas Pcrmeability of Integrally Skinned Asymmetric Membranes[J]. Chinese Journal of Applied Chemistry, ;1994, 11(1): 84-87. shu

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 Date: 20 June 1993
Available Online: 20 October 1993

Integrally skinned asymmetric poly(ether sulfone)membranes were made by dry/wet phase inversion processes. The effects of the dry phase inversion conditions,e.g. evapo-ration time and temperature on the morphology and N₂、H₂ permeability of the membranes. were studied. The results indicated that the structure of the membranes, thickness and den-sity of the skin layer were all affected by the dry phase inversion conditions. Preferable mem-brane 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.
- poly(ether sulfone),
- asymmetric membrane,
- dry phase inversion,
- gas separation
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