Title:
ROOM-TEMPERATURE SELECTIVE SWELLING METHOD OF PORE GENERATION USED FOR PREPARATION OF SEPARATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2021/139094
Kind Code:
A1
Abstract:
A room-temperature selective swelling method of pore generation, used for preparation of a separation membrane, comprising: treating an amphiphilic block copolymer dense membrane using a compound swelling agent at 15-30°C for 1 min-24 h, then removing residual solvent and drying at room temperature, obtaining an amphiphilic block copolymer separation membrane having a bicontinuous porous structure; the compound swelling agent consisting of 60-96% a first swelling agent and 4-40% a second swelling agent, the first swelling agent being an alcohol solvent, and the second swelling agent being any one, or a mixture of two or more, of the reagents 1,4-dioxane, toluene, styrene and tetrahydrofuran. By means of adjusting solvent composition of a swelling agent and an amount of second swelling agent, it is possible to regulate a degree and morphology of swelling.
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Inventors:
WANG YONG (CN)
WANG YANJIE (CN)
ZHOU JIEMEI (CN)
WANG YANJIE (CN)
ZHOU JIEMEI (CN)
Application Number:
PCT/CN2020/097143
Publication Date:
July 15, 2021
Filing Date:
June 19, 2020
Export Citation:
Assignee:
UNIV NANJING TECH (CN)
International Classes:
B01D71/80; B01D67/00
Foreign References:
| CN111167316A | 2020-05-19 | |||
| CN101704957A | 2010-05-12 | |||
| CN101177493A | 2008-05-14 | |||
| CN103464015B | 2015-12-23 | |||
| CN101011645A | 2007-08-08 | |||
| US5007944A | 1991-04-16 | |||
| US8829062B1 | 2014-09-09 |
Other References:
See also references of EP 3970837A4
Attorney, Agent or Firm:
BEIJING ZHAOJUN UNION INTELLECTUAL PROPERTY LAW FIRM (CN)
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