Preparation of polyetherimide nanofiltration membrane by dry/wet phase conversion
[1]LIU Jindun,Luo Qingtao,Zhang Haoqin.Preparation of polyetherimide nanofiltration membrane by dry/wet phase conversion[J].Journal of Zhengzhou University (Engineering Science),2005,26(03):8-11.[doi:10.3969/j.issn.1671-6833.2005.03.003]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
26
Number of periods:
2005年03期
Page number:
8-11
Column:
Public date:
1900-01-01
- Title:
- Preparation of polyetherimide nanofiltration membrane by dry/wet phase conversion
- CLC:
- -
- DOI:
- 10.3969/j.issn.1671-6833.2005.03.003
- Abstract:
-
Asymmetric nanofiltration membranes were prepared by dry/wet phase conversion using polyetherimide (PEI) film-forming material, N-methyl-2-pyrolidone(NMP) as polar solvent, ethylene glycol dimethyl ether (DGDE) as volatile poor solvent, phosphoric acid (H3PO4) as non-volatile non-solvent, polyethylene glycol (PEG1 000) as additive, and water as gel medium. The main factors affecting the membrane performance were studied by uniform design method, and the regression equation of membrane performance was established, and the qualitative and quantitative relationships between membrane performance and various factors were obtained. Increasing the content of PEI, H3PO4 and DGDE in the casting film solution, or prolonging the evaporation time, can improve the interception performance of the membrane and reduce the water flux of the membrane. Increasing the content of PEG1000 can effectively improve the water flux of the membrane.
- References:
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Last Update:
1900-01-01