Tuesday, February 07, 2012

US Patent 8110026 - Graphene-polymer gas barrier


Gas diffusion barriers are important to some types of chemical processing and sensor applications as well as materials for food packaging. This patent from Princeton University teaches using graphene material to produce improved gas diffusion barriers. Claim 1 reads:

1. A gas diffusion barrier, comprising:

a polymer matrix; and

a functional graphene having a surface area of from about 300 m2/g to 2600 m2/g,

wherein said functional graphene is made by thermally exfoliating graphite oxide at a temperature of from 300 to 2000° C.