POROUS OXYGEN SCAVENGING MATERIAL

摘要

Oxygen scavenging compositions and packaging and methods of producing the same. A first material comprising a blow agent and an oxidizable organic polymer having a polymeric backbone and cyclic olefinic groups is exposed to an elevated temperature and/or pressure sufficient cause the oxidizable organic polymer to melt and the blow agent to evolve gas, thus creating micro-voids within the polymer material. Such porous oxygen scavenging materials can have a increased oxygen scavenging rate, when compared to oxygen scavenging materials of similar composition that have a non-porous structure.