Polymers containing functionalized carbon nanotubes
US8980136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2007 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Aug 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes. The resulting composite yields superior chemical, physical and electrical properties over polymer composites that are only physically mixed and without binding to the surface carbons of the nanotubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.