Title:
ION EXCHANGE MEMBRANE, METHOD FOR MANUFACTURING ION EXCHANGE MEMBRANE, AND ION EXCHANGE MEMBRANE CELL
Document Type and Number:
WIPO Patent Application WO/2022/230998
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an ion exchange membrane with which: the surface area of a membrane effective for ion permeation can be increased; an electrical resistance of a flow passage between membranes and attachment of contaminating substances are appropriately reduced; the mechanical strength of the membrane itself is increased; and there is little deformation or damage due to swelling over a wide range of salt concentrations even if there is a large difference in the salt concentrations between two solutions that are in contact with the membrane. This ion exchange membrane, which has an undulating shape, has a flat portion in the vicinity of an end, protruding curved portions and recessed curved portions resulting from curvature of the ion exchange membrane itself respectively form projecting portions and recessed portions in the undulating shape of the ion exchange membrane, the projecting portions extend with a linear shape or a curved shape, the recessed portions between the projecting portions are flat, the recessed portions include first recessed portions that extend in a longitudinal direction of the projecting portions and that are adjacent to one another in a lateral direction of the projecting portions, the projecting portions have an apex portion and side surfaces in the longitudinal direction, and the side surfaces are inclined from the apex portion toward the first recessed portions.
Inventors:
HIGA MITSURU (JP)
Application Number:
PCT/JP2022/019415
Publication Date:
November 03, 2022
Filing Date:
April 28, 2022
Export Citation:
Assignee:
UNIV YAMAGUCHI (JP)
International Classes:
B01D61/46; B01J39/04; B01J39/05; B01J39/19; B01J39/20; B01J41/04; B01J41/05; B01J41/13; B01J41/14; B01J47/12; C08J5/22; C25B13/02; C25B13/08
Domestic Patent References:
| WO2021090919A1 | 2021-05-14 | |||
| WO2005009596A1 | 2005-02-03 |
Foreign References:
| JP2004507342A | 2004-03-11 | |||
| CN2561499Y | 2003-07-23 | |||
| JP2014014776A | 2014-01-30 | |||
| JP2006175408A | 2006-07-06 |
Other References:
VERMAAS ET AL., J. MEMBR. SCI., vol. 385-386, 2011, pages 234 - 242
PAWLOWSKI ET AL., J. MEMBR. SCI., vol. 531, 2017, pages 111 - 121
PAWLOWSKI ET AL., INT. J. MOL. SCI., vol. 20, 2019, pages 165
PAWLOWSKI ET AL., J. MEMBR. SCI., vol. 531, 2017, pages 111 - 121
PAWLOWSKI ET AL., INT. J. MOL. SCI., vol. 20, 2019, pages 165
Attorney, Agent or Firm:
HIROTA, Masanori (JP)
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