Title:
POLYAMIDE COMPOSITE REVERSE OSMOSIS MEMBRANE AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/280191
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of membranes, and in particular relates to a polyamide composite reverse osmosis membrane and to a preparation method thereof. The polyamide composite reverse osmosis membrane provided by the present invention comprises: a nascent membrane and a temperature-responsive polypeptide grafted to a surface of the nascent membrane; the nascent membrane comprises a support layer and a polyamide separation layer joined to the support layer; the temperature-responsive polypeptide is a homopolymeric (L-glutamate) containing oligo(poly(ethylene glycol)). The present invention involves grafting a temperature-responsive polypeptide to the surface of a polyamide reverse osmosis membrane, and, without affecting the flux and desalination rate of the reverse osmosis membrane, causing the reverse osmosis membrane to have good pollution-resistance and oxidation-resistance properties, and additionally being able to adjust a cleaning temperature to effectively wash-away adhered pollutants, resulting in an extremely high flux recovery rate following washing, thus being able to greatly extend the service life of the reverse osmosis membrane. The polyamide composite reverse osmosis membrane provided in the present invention has excellent pollution resistance and oxidation resistance capabilities, has a low difficulty of cleaning, and has extremely broad market prospects.
Inventors:
ZHAO LIANG (CN)
ZENG HAOHAO (CN)
LONG JING (CN)
CHEN XING (CN)
TU JIAOJIAO (CN)
REN ZHAOHUA (CN)
LIU YU (CN)
SHI CHUDAO (CN)
HE LIANG (CN)
ZENG HAOHAO (CN)
LONG JING (CN)
CHEN XING (CN)
TU JIAOJIAO (CN)
REN ZHAOHUA (CN)
LIU YU (CN)
SHI CHUDAO (CN)
HE LIANG (CN)
Application Number:
PCT/CN2022/104039
Publication Date:
January 12, 2023
Filing Date:
July 06, 2022
Export Citation:
Assignee:
HUNAN KEENSEN TECH CO LTD (CN)
International Classes:
B01D71/78; B01D69/12; B01D71/56
Foreign References:
| CN113209843A | 2021-08-06 | |||
| US20120241373A1 | 2012-09-27 | |||
| CN104190272A | 2014-12-10 |
Other References:
WU YAN: "Preparation and Thermoresponsive Properties of Poly (L-glutamate) Bearing Oligo Ethylene Glycol Pendants", CHINA MASTER'S' THESES FULL-TEXT DATABASE (ELECTRONIC JOURNAL)-INFORMATION & TECHNOLOGY), TIANJIN POLYTECHNIC UNIVERSITY, CN, no. 4, 15 April 2016 (2016-04-15), CN , XP093021124, ISSN: 1674-0246
HE CHAOLIANG, JACKIE CHAN, XIAO CHUNSHENG, DING JIANXUN, ZHUANG XIULI, CHEN XUESI: "Synthesis and Characterization of a Temperature-Sensitive Poly(L-Glutamate)-G-Oligoethylene Glycol Graft Copolymer", 2011 NATIONAL POLYMER ACADEMIC PAPERS CONFERENCE PAPER ABSTRACTS, 28 September 2011 (2011-09-28), XP093021129
HE CHAOLIANG, JACKIE CHAN, XIAO CHUNSHENG, DING JIANXUN, ZHUANG XIULI, CHEN XUESI: "Synthesis and Characterization of a Temperature-Sensitive Poly(L-Glutamate)-G-Oligoethylene Glycol Graft Copolymer", 2011 NATIONAL POLYMER ACADEMIC PAPERS CONFERENCE PAPER ABSTRACTS, 28 September 2011 (2011-09-28), XP093021129
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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