Carbon Nanotube Enabled Hydrophobic-Hydrophilic Composite Interfaces and Methods of Their Formation

• US 20140037938A1
• Filed: 07/30/2013
• Published: 02/06/2014
• Est. Priority Date: 07/30/2012
• Status: Abandoned Application

• Current Assignee: University of South Carolina
• Original Assignee: University of South Carolina
• Inventors: Li, Chen, Huang, Xinyu, Dai, Xianming, Yang, Fanghao
• Application Number:
  US13/954,214
• Publication Number:
  US 20140037938A1
• Time in Patent Office: Days
• US Class Current: 428/323
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C01B 32/174 Derivatisation; Solubilisation; Dispersion in solvents
• CPC Class Codes: C08K 2201/011 Nanostructured additives
• CPC Class Codes: C08K 3/041 Carbon nanotubes
• CPC Class Codes: C08K 7/06 Elements
• CPC Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: C09D 7/62 modified by treatment with other compounds
• CPC Class Codes: C09D 7/67 Particle size smaller than 100 nm
• CPC Class Codes: C09D 7/68 Particle size between 100-1000 nm
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles

Abstract

Methods are generally provided for forming a coated substrate having a plurality of carbon nanoparticles, along with the resulting coated substrates. In one embodiment, the method includes oxidizing the carbon nanoparticles to form oxygen containing end groups on the surfaces of the carbon nanoparticles; dispersing the oxidized carbon nanoparticles into a polymeric media to form an ink; and depositing the ink onto a substrate to form a coating. Generally, the coating includes the oxidized carbon nanoparticles dispersed within the polymeric material.

Claims

1. A method of forming a coated substrate having a plurality of carbon nanoparticles, each nanoparticle defining a surface, the method comprising:

oxidizing the carbon nanoparticles to form oxygen containing end groups on the surfaces of the carbon nanoparticles;

dispersing the oxidized carbon nanoparticles into a polymeric media to form an ink, wherein the polymeric media comprises a polymeric material; and

applying the ink onto a substrate to form a coating, wherein the coating includes the oxidized carbon nanoparticles dispersed within the polymeric material.

2. The method of claim 1, further comprising:

functionalizing the coating to add additional hydrophilic groups thereon.

3. The method of claim 2, wherein the coating is functionalized via oxidation.

4. The method of claim 2, wherein the coating is functionalized via oxygen plasma treatment.

5. The method of claim 4, wherein plasma treatment produces additional oxygen containing end groups on the oxygenized carbon nanoparticles.

6. The method of claim 5, wherein plasma treatment produces oxygen containing end groups on the polymeric material.

7. The method of claim 1, wherein oxidizing the carbon nanoparticles comprises reacting the carbon nanoparticles with a strong acid.

8. The method of claim 7, wherein the strong acid comprises nitric acid, hydrochloric acid, or a mixture thereof.

9. The method of claim 1, wherein the polymeric material comprises a theromplastic polymeric material.

10. The method of claim 1, wherein the carbon nanoparticles comprises multi-walled carbon nanowires.

11. The method of claim 1, wherein the polymeric media further comprises a solvent.

12. A coated substrate formed according to the method of claim 1.