Title:
METHOD FOR MANUFACTURING ULTRA-THIN POLYMER SEPARATION MEMBRANE BY USING LOW-TEMPERATURE COATING
Document Type and Number:
WIPO Patent Application WO/2022/050542
Kind Code:
A1
Abstract:
The present invention relates to an ultra-thin polymer separation membrane comprising: a porous polymer support layer; a gutter layer formed on the porous polymer support layer; and a semi-crystalline polymer selection layer formed on the gutter layer, wherein the semi-crystalline polymer selection layer is coated with a nanometer-level thickness in a state in which the temperature of a semi-crystalline polymer solution is 0°C to -50°C. Therefore, the crystallinity and orientation of the ultra-thin polymer separation membrane, essentially required for the scale-up of a separation membrane process and the actual application in industry, can be easily controlled using a low-temperature coating method, in which the temperature of the polymer solution is lowered, in the coating of the selection layer. Furthermore, the separation performance can be remarkably enhanced even by using only polymers as materials, without separate additives that have been used in the manufacturing of conventional ultra-thin film polymer separation membranes.
Inventors:
PARK HO BUM (KR)
LEE TAE HOON (KR)
DO SI HYUN (KR)
LEE TAE HOON (KR)
DO SI HYUN (KR)
Application Number:
PCT/KR2021/008119
Publication Date:
March 10, 2022
Filing Date:
June 28, 2021
Export Citation:
Assignee:
IUCF HYU (KR)
International Classes:
B01D67/00; B01D53/22; B01D69/10; B01D69/12; B01D71/56; C02F1/44
Foreign References:
| KR20150001369A | 2015-01-06 | |||
| JP3053429B2 | 2000-06-19 | |||
| KR101837703B1 | 2018-03-12 | |||
| KR101968140B1 | 2019-04-12 | |||
| KR20100079530A | 2010-07-08 |
Attorney, Agent or Firm:
CHUNG HYUN PATENT & LAW FIRM (KR)
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