Title:
DUAL HYDROPHILIC POLYETHYLENE ULTRAFILTRATION MEMBRANE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/253882
Kind Code:
A1
Abstract:
A dual hydrophilic polyethylene ultrafiltration membrane and a preparation method therefor. A chitosan (or derivative thereof)/nano-silica polyethylene ultrafiltration membrane is prepared by means of a combination of amine and hydroxyl in a polysaccharide polymer by using an organic-inorganic sol-gel on the basis of a thermally induced phase separation process; strong chelation is formed with metal ions by means of covalent bonds to form an inside-surface dual hydrophilic layer.
Inventors:
CHENG ALEX (CN)
ZHAO YUCHEN (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
ZHAO YUCHEN (CN)
QIU CHANGQUAN (CN)
ZHUANG ZHI (CN)
YU SHAOBO (CN)
Application Number:
PCT/CN2021/080287
Publication Date:
December 23, 2021
Filing Date:
March 11, 2021
Export Citation:
Assignee:
SHANGHAI ENERGY NEW MAT TECH CO LTD (CN)
International Classes:
B01D67/00; B01D71/26
Domestic Patent References:
| WO2012135065A2 | 2012-10-04 | |||
| WO2018176086A1 | 2018-10-04 |
Foreign References:
| CN111672334A | 2020-09-18 | |||
| CN109012232A | 2018-12-18 | |||
| CN106457161A | 2017-02-22 | |||
| CN105727768A | 2016-07-06 |
Attorney, Agent or Firm:
SHANGHAI YUANTONG LAW FIRM (CN)
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