Certains contenus de cette application ne sont pas disponibles pour le moment.
Si cette situation persiste, veuillez nous contacter àObservations et contact
1. (WO2018042392) MEMBRANE SÉLECTIVEMENT PERMÉABLE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

1. A component configured for selective permeation of a specified gas therethrough, the component comprising:

a. a first side, a second side and a support structure with a plurality of holes passing through said support structure from said first side to said second side;

b. spanning said holes, selectively-permeable membranes that are selectively permeable to a specified gas, said selectively-permeable membranes comprising: i. a first side and a second side;

ii. a polymer matrix configured to allow passage of gases through said membranes between said first side and said second side of said membranes by simple diffusion; and

ii. functionally associated with said polymer matrix, at least one carrier that preferentially reversibly binds said specified gas,

wherein at least one of said first side and said second side of said membranes are patterned with a plurality of depressions so that said selectively-permeable membranes comprise thinner regions of said polymer matrix and thicker regions of said polymer matrix.

2. The component of claim 1, wherein said preferentially reversible binding of said specified gas to at least one said carrier allows passage of said specified gas through said membranes at a rate higher than a rate determined by simple diffusion.

3. The component of any one of claims 1 to 2, wherein said preferentially reversible binding of said specified gas to at least one said carrier allows passage of said specified gas through said membranes between said first side and said second side by facilitated diffusion that includes a step of binding between a molecule of specified gas and said at least one carrier.

4. The component of any one of claims 1 to 3, wherein said polymer matrix encases said support structure.

5. The component of any one of claims 1 to 4, wherein the thickness of said membranes is not more than 100 micrometers.

6. The component of any one of claims 1 to 5, wherein the thickness of said membranes is not less than 1 micrometer.

7. The component of any one of claims 1 to 6, wherein not less than 50% of said depressions are circular.

8. The component of any one of claims 1 to 7, wherein a majority of said depressions have a surface area of not less than 0.8 micrometer2 .

9. The component of any one of claims 1 to 8, wherein a majority of said depressions have a surface area of not more than 200,000 micrometer2 .

10. The component of any one of claims 1 to 9, wherein a majority of said depressions have a surface area of not less than 0.8 micrometer2 and not more than 200,000 micrometer2 .

11. The component of any one of claims 1 to 10, wherein said first side and said second side of said supporting structure are parallel.

12. The component of any one of claims 1 to 11, said support structure having width and length dimensions that are not less than ten times greater than a thickness dimension, wherein said thickness dimension is a dimension between said first side and said second side.

13. The component of any one of claims 1 to 12, wherein said membranes are equidistant from said first side and said second side.

14. The component of any one of claims 1 to 13, wherein said support structure is not less than 20 micrometers thick.

15. The component of any one of claims 1 to 14, wherein said support structure is not more than 2000 micrometers thick.

16. The component of any one of claims 1 to 15, wherein said support structure is not less than 20 micrometers thick and not more than 2000 micrometers thick.

17. The component of any one of claims 1 to 17, wherein said support structure comprises a solid links and node structure that defines said holes.

18. The component of any one of claims 1 to 17, wherein said holes of said support structure have a cross-sectional area of not more than 1,000,000 micrometer2.

19. The component of any one of claims 1 to 19, wherein said holes have a cross-sectional area of not less than 400 micrometer2.

20. The component of any one of claims 1 to 19, wherein said support structure is of a material selected from the group consisting of a metal and a polymer.

21. The component of any one of claims 1 to 20, said polymer matrix comprising polymerized monomers selected from the group consisting of polycarbonate monomers, poly(vinylidene dichloride) and polysulfone monomers.

22. The component of claim 21, wherein said polymer matrix comprises polymerized polycarbonate monomers.

23. The component of any one of claims 1 to 24, polymers making up said polymer matrix having an average molecular weight of not less than 10000.

24. The component of any one of claims 1 to 23, polymers making up said polymer matrix having an average molecular weight of not more than 100,000.

25. The component of any one of claims 1 to 24, polymers making up said polymer matrix having an average molecular weight of not less than 10000 and not more than 100,000.

26. The component of any one of claims 1 to 25, wherein at least one said carrier is covalently bonded to molecules of said polymer matrix, and thereby functionally associated therewith.

27. The component of any one of claims 1 to 26 wherein at least one carrier of said at least one carrier is a chemical entity distinct from said polymer matrix.

28. The component of any one of claims 1 to 27, wherein said specified gas is oxygen so that at least one said carrier of said at least one carrier preferentially reversibly binds oxygen and said membrane is an oxygen- selective membrane.

29. The component of claims 1 to 26, at least one said carrier of said at least one carrier being a metal complex of an organic compound selected from the group consisting of a phthalocyanine, a porphyrin and a corrole.

30. The component of any one of claims 1 to 29, at least one said carrier of said at least one carrier being metal particles.

31. The component of any one of claims 1 to 30, said membrane further comprising a plasticizer.

32. The component of any one of claims 1 to 31, further comprising a hydrophilic coating on at least one of said sides.

33. A method of making a component configured for selective permeation of a specified gas therethrough, comprising:

i. providing a dipping solution including:

a polymer;

a carrier; and

a volatile solvent;

ii. subsequent to i, immersing in said dipping solution a support structure with a plurality of holes passing through said support structure from a first side to a second side of said support structure;

iii. subsequent to ii, removing said support structure from said dipping solution so that said support structure is coated with said dipping solution; and

iv. subsequent to iii, maintaining said support in an atmosphere while said support structure is in a position where said first side and said second side are substantially parallel with a gravity vector, thereby allowing said volatile solvent to evaporate into said atmosphere to form said selectively-permeable membrane spanning said holes of said support structure

thereby making a configured for selective permeation of a specified gas therethrough.

34. The method of claim 33, further comprising, during said removing of said support structure from said dipping solution, maintaining said first side and said second side of said support structure substantially parallel with a gravity vector.

35. The method of any one of claims 33 to 34, wherein at least 95% by weight of said volatile solvent has a vapor pressure of not less than 13300 Pa at 25°C.

36. The method of any one of claims 33 to 35, wherein said volatile solvent comprises dichloromethane.

37. The method of any one of claims 33 to 36, wherein said volatile solvent comprises chloroform.

38. The method of any one of claims 33 to 37, wherein said atmosphere has a relative humidity of not less than 20%.

39. The method of any one of claims 33 to 38, wherein said atmosphere has a relative humidity of not more than 40%.

40. The method of any one of claims 33 to 39, wherein said atmosphere has a pressure of between 86700 Pa and 107000 Pa.

41. The method of any one of claims 33 to 40, wherein a concentration of said polymer in said dipping solution is not less than 5% by weight of said dipping solution.

42. The method of any one of claims 33 to 41, wherein a concentration of said carrier in said dipping solution is not less than 2% by weight of said dipping solution.

43. The method of any one of claims 33 to 42, wherein a concentration of said carrier in said dipping solution is not more than 35% by weight of said dipping solution.

44. The method of any one of claims 33 to 43, said dipping solution further comprising a plasticizer.

45. The method of any one of claims 33 to 44, further comprising:

subsequent to iv, treating at least one of side of said formed selectively-permeable membrane spanning said holes of said support structure to increase a hydrophilicity thereof so that a contact angle of a droplet of water on said selectively-permeable membrane is reduced relative to an untreated said side.

46. A non-biological selectively-permeable membrane that is preferable permeable to oxygen, having a first side, a second side and comprising:

a. a polymer matrix configured to allow passage of gases through said membrane between said first side and said second side by simple diffusion; and

b. functionally associated with said polymer matrix, at least one carrier that preferentially reversibly binds to oxygen,

wherein at least one said carrier is a metal complex of a phthalocyanine.

47. A non-biological selectively-permeable membrane that is preferably permeable to a specified gas, having a first side, a second side and comprising:

a. a polymer matrix configured to allow passage of gases through said membrane between said first side and said second side by simple diffusion; and

b. functionally associated with said polymer matrix, at least one carrier that preferentially reversibly binds said specified gas,

wherein said polymer matrix comprises polymerized polycarbonate monomers.

48. A device comprising a component of any one of claims 1 to 32, a component made according to the method of any one of claims 33 to 45, or a membrane according to any one of claims 46 to 47.

49. The device of claim 48, selected from the group consisting of: an electrochemical cell, a metal -air electrochemical cell, a fuel cell, an oxygen enrichment unit, an air filter, an indoor air filter, an artificial gill and an artificial lung.

50. A method of transporting gas molecules from a first fluid volume having a first concentration of a desired gas molecule to a second fluid volume having a second concentration of the desired gas molecule, comprising:

providing a component of any one of claims 1 to 32, a component made according to the method of any one of claims 33 to 45, or a membrane according to any one of claims 46 to 47; and

placing said component or said membrane between said first fluid volume and said second fluid volume, so that said membrane defines a path for fluid communication between said first fluid volume and said second fluid volume.