Process for preparing compound polyelectrolyte (chitosan/sodium polyphosphate) membrane |
Title： |
| Process for preparing compound polyelectrolyte (chitosan/sodium polyphosphate) membrane |
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Application Number： |
00109129 |
Application Date： |
2000/06/09 |
Announcement Date： |
2000/10/18 |
Pub. Date： |
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Publication Number： |
1270078 |
Announcement Number： |
1107532 |
Grant Date： |
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Granted Pub. Date： |
2003-5-7 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
B01D 69/06, B01D 71/08 |
Applicant(s)： |
Qinghua Univ. |
Inventor(s)： |
Chen Cuixian, Hao Jihua, Zhang Liping |
Key Words： |
compound polyelectrolyte membrane, chitosan, sodium polyphosphate |
Abstract： |
A process for preparing compound polyelectrolyte membrane includes such steps as adding chitosan to diluted aqueous solution of acetic acid to prepare chitosan membrane liquid, filtering, defoaming, coating said membrane liquid on PAN substrate film, baking to obtain chitosan acetate membrane, immersing it in the aqueous solution of sodium polyphosphate for polyionizing reaction, flushing with water and drying in air. Its preparing process is simple. When said membrane is used to dewater organic substance, it has high penetration throughput and separation coefficient. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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