Nanocomposites of polymers with dispersed nanotubes

D - Textiles – Paper – 01 – F

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D01F 9/12 (2006.01) A61N 1/05 (2006.01) G21F 1/10 (2006.01)

Patent

CA 2620270

A 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, as shown in Figure 5, 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.

La présente invention concerne des nanocomposites polymériques ayant des nanotubes dispersés et leurs procédés de production. Ce polymère peut être un polyéther. La présente invention concerne, par exemple, un procédé efficace permettant de disperser avec succès des nanotubes à paroi unique (SWNTs) à la fois dans les polyéthylènoxydes (PEO) et leur analogue polyéthylèneglycol (PEG) à faible poids moléculaire avec percolation hydrodynamique d'environ 0,09 % en poids et une percolation électrique d'environ 0,03 % en poids de SWNT, comme montré dans la figure 5, à température ambiante, et les nanocomposites résultants. Ce procédé permet de fournir un tensio-actif. Les inventeurs concernés ont accompli une diminution du point de fusion du polymère et un retardement de la cristallisation polymère due à la présence des nanotubes.

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