Nanocomposites of polymers with dispersed nanotubes
US7951864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Oct 13, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2371/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The present invention provides polymer nanocomposites with dispersed nanotubes and methods of making same. The polymer may be a polyether. For example, the present invention provides an effective method to successfully disperse single walled nanotubes (SWNTs) into both Polyethylenoxide (PEO) and its low molecular weight analog polyethylene glycol (PEG) with hydrodynamic percolation at about 0.09 wt % and an electrical percolation at about 0.03 wt % SWNTs at room temperature, and the resulting nanocomposites. The method may include providing a surfactant. Most notably the present inventors achieved a decrease in the melting point of the polymer and a retardation of polymer crystallization due to the presence of the nanotubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.