Title:
NANOFILTRATION MEMBRANE PREPARATION METHOD, AND NANOFILTRATION MEMBRANE PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2023/231312
Kind Code:
A1
Abstract:
The present disclosure relates to a nanofiltration membrane preparation method, and a nanofiltration membrane prepared thereby. The preparation method comprises the following steps: preparing a casting solution, and curing the casting solution on a reinforcement material to form a base membrane; sequentially contacting the base membrane with a water phase solution and an oil phase solution so as to perform an interfacial polymerization reaction on the base membrane to form a polyamide functional layer, wherein the water phase solution includes a water phase monomer and an additive, the additive is a glycosylated sulfonamide compound, and the oil phase solution includes an oil phase monomer; and performing post-treatment to obtain a nanofiltration membrane, the post-treatment comprising hydroxylation treatment and cross-linking treatment. The nanofiltration membrane prepared by the preparation method of the present disclosure has high throughput and selective separation properties and excellent antibacterial properties, and can effectively prevent microbial pollution.
Inventors:
LIANG SONGMIAO (CN)
HU LIJIE (CN)
LIU GENG (CN)
SONG PENG (CN)
ZHANG JIAJIA (CN)
WANG BINGHUI (CN)
WEN JIBIN (CN)
HU LIJIE (CN)
LIU GENG (CN)
SONG PENG (CN)
ZHANG JIAJIA (CN)
WANG BINGHUI (CN)
WEN JIBIN (CN)
Application Number:
PCT/CN2022/132633
Publication Date:
December 07, 2023
Filing Date:
November 17, 2022
Export Citation:
Assignee:
VONTRON TECH CO LTD (CN)
International Classes:
B01D71/68; B01D69/12
Foreign References:
| CN114849501A | 2022-08-05 | |||
| CN108097071A | 2018-06-01 | |||
| CN108043227A | 2018-05-18 | |||
| CN109847585A | 2019-06-07 | |||
| US20070039874A1 | 2007-02-22 |
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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