Method for manufacturing of a carbon nanomembrane

• US 10,646,831 B2
• Filed: 04/24/2018
• Issued: 05/12/2020
• Est. Priority Date: 10/28/2015
• Status: Active Grant

• Current Assignee: CNM Technologies GmbH
• Original Assignee: CNM Technologies GmbH
• Inventors: Angelova, Polina, Schnieders, Albert
• Primary Examiner(s): Shumate, Anthony R
• Application Number:
  US15/961,145
• Publication Number:
  US 20180236410A1
• Time in Patent Office: 749 Days
• CPC Class Codes: B01D 2323/30 Cross-linking
• CPC Class Codes: B01D 2323/34 Use of radiation
• CPC Class Codes: B01D 2323/39 Electrospinning
• CPC Class Codes: B01D 67/0006 by chemical reactions in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125
• CPC Class Codes: B01D 67/0088 Physical treatment with compounds, e.g. swelling, coating or impregnation
• CPC Class Codes: B01D 69/10 Supported membranes; Membrane supports
• CPC Class Codes: B01D 69/122 Separate manufacturing of ultra-thin membranes
• CPC Class Codes: B01D 71/021 Carbon
• CPC Class Codes: B05D 1/185 applying monomolecular layers B05D1/204 takes precedence
• CPC Class Codes: B05D 2201/00 Polymeric substrate or laminate
• CPC Class Codes: B05D 2350/65 metal layer
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures

Abstract

A method for the manufacture of a carbon nanomembrane is disclosed. The method comprises preparing a metallised polymer substrate and applying on the metallised polymer substrate a monolayer prepared from an aromatic molecule. The aromatic molecule is cross-linked to form a carbon nanomembrane. The carbon nanomembrane is coated by a protective layer and subsequently the carbon nanomembrane and the protective layer are released from the metallised polymer substrate. Finally, the carbon nanomembrane and the protective layer are optionally placed on a support. The protective layer can be optionally removed. The carbon nanomembrane can be used for filtration.

Claims

1. A method for the manufacture of a carbon nanomembrane comprising:

preparing an aluminised polymer substrate;

applying on the aluminised polymer substrate a monolayer prepared from an aromatic molecule with at least one phosphonic acid group, wherein the aromatic precursor molecules are selected from the group consisting of phenyl, biphenyl, terphenyl, quaterphenyl, naphthalene, anthracene, pyrene, bipyridine, terpyridine, thiophene, bithienyl, terthienyl, pyrrole, and combinations thereof;

cross-linking by irradiation of the aromatic molecule to form a carbon nanomembrane;

protecting the carbon nanomembrane by a protective polymer layer; and

removing the aluminised polymer substrate.

2. The method of claim 1, further comprising placing of the carbon nanomembrane with the protective polymer layer on a support layer.

3. The method of claim 2, further comprising removal of the protective polymer layer.

4. The method of claim 1, wherein the aluminised polymer substrate is an aluminised polyethylene terephthalate substrate.

5. The method of claim 1, wherein the protective polymer layer is made of polymethylmethacrylate.

6. The method of claim 1, wherein the protective polymer layer is removed in acetone.

7. The method of claim 1, wherein the protective polymer layer is created by electrospinning a porous polymer.

8. A method for the manufacture of a carbon nanomembrane comprising:

preparing a metallised polymer substrate;

applying on the metallised polymer substrate a monolayer prepared from an aromatic molecule;

cross-linking the aromatic molecule to form a carbon nanomembrane;

protecting the carbon nanomembrane by a protective layer; and

removing the metallised polymer substrate;

wherein the protective layer is created by electrospinning a porous polymer.