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Increasing the gas transmission rate of a film comprising fullerenes

  • US 20070042089A1
  • Filed: 08/19/2005
  • Published: 02/22/2007
  • Est. Priority Date: 08/19/2005
  • Status: Active Grant
First Claim
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1. A method of increasing the gas transmission rate of a packaging film comprising the steps of:

  • providing a packaging film comprising at least about 0.001 weight %, based on the weight of the film, of fullerene material selected from one or more of spherical fullerenes, bowl-shaped fullerenes, multi-walled carbon nanotubes, carbon nanocones, and carbon nano-onions; and

    exposing the packaging film to an amount of radiation energy effective to increase the oxygen transmission rate of the packaging film by at least about 100 cubic centimeters (at standard temperature and pressure) per square meter per day per 1 atmosphere of oxygen pressure differential measured at 0% relative humidity and 23°

    C.

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