Polymer ion exchange membrane and method of preparing same
US-10516182-B2 · Dec 24, 2019 · US
Humidifying membrane for reverse electrodialysis and method for manufacturing the same
US10882010B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10882010-B2 |
| Application number | US-201716095037-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2017 |
| Priority date | Apr 21, 2016 |
| Publication date | Jan 5, 2021 |
| Grant date | Jan 5, 2021 |
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Abstract
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The present disclosure relates to a technique for manufacturing a humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane and applying the membrane to a reverse electrodialysis process. The humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane, manufactured according to the present disclosure, embodies a low bulk resistance of the ion exchange membrane and significantly improves ion selectivity, thereby overcoming the trade-off relationship between membrane resistance and ion selectivity, and thus may be commercially available as an anion and cation exchange membrane of a reverse electrodialysis device.
First claim
Opening claim text (preview).
The invention claimed is: 1. A humidifying membrane for reverse electrodialysis, comprising: a) an aromatic hydrocarbon-based polymer ion exchange membrane of the following Chemical Formula 5: wherein, R represents CH 2 N(CH 3 ) 3 Cl; and n represents an integer of 30-70; and b) a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of the ion exchange membrane. 2. The humidifying membrane for reverse electrodialysis according to claim 1 , wherein the hydrophobic thin film-coating layer comprises a hydrophobic functional group which is —CF 2 —, —CF 3 or a combination thereof. 3. The humidifying membrane for reverse electrodialysis according to claim 1 , wherein the hydrophobic thin film-coating layer has a thickness of 10-1000 nm. 4. A method for manufacturing the humidifying membrane for reverse electrodialysis according to claim 1 comprising a step of treating an aromatic hydrocarbon-based polymer ion exchange membrane of the following Chemical Formula 5: wherein, R represents CH 2 N(CH 3 ) 3 Cl, and n represents an integer of 30-70, with atmospheric pressure plasma 3-40 times repeatedly. 5. The method for manufacturing a humidifying membrane for reverse electrodialysis according to claim 4 , wherein the aromatic hydrocarbon-based polymer ion exchange membrane is treated with atmospheric pressure plasma 3-10 times repeatedly. 6. The method for manufacturing a humidifying membrane for reverse electrodialysis according to claim 4 , wherein the step of treating the aromatic hydrocarbon-based polymer with atmospheric pressure plasma is carried out by infusing a first gas selected from argon gas, nitrogen gas, oxygen gas, helium gas and a combination thereof; and a second gas selected from hydrocarbon gas, fluorocarbon gas and a combination thereof. 7. The method for manufacturing a humidifying membrane for reverse electrodialysis according to claim 6 , wherein the hydrocarbon gas is CH 4 gas or C 2 H 2 gas. 8. The method for manufacturing a humidifying membrane for reverse electrodialysis according to claim 6 , wherein the fluorocarbon gas is C 4 F 8 gas, CF 4 gas or a combination thereof. 9. A reverse electrodialysis system comprising the humidifying membrane for reverse electrodialysis as defined in claim 1 .
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Classifications
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Polythioethers; Polythioether-ethers · CPC title
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- What does patent US10882010B2 cover?
- The present disclosure relates to a technique for manufacturing a humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane and applying the membrane to a reverse electrodialysis process. The humidifying membrane including a hydrophobic thin film-coating layer ha…
- Who is the assignee on this patent?
- Univ Hanyang Ind Univ Coop Found
- What technology area does this patent fall under?
- Primary CPC classification C08J5/2293. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 05 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).