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Non-invasive headspace measurement for characterizing oxygen-scavenging in polymers |
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| Authors: | Hua Li Benny D Freeman Mark E Stewart Thomas R Clark |
| Affiliation: | a The University of Texas at Austin, Department of Chemical Engineering, Center for Energy and Environmental Resources, 10100 Burnet Road, Building 133, Austin, TX 78758, United States b Global PET Technology, Eastman Chemical Company, P.O. Box 511, Kingsport, TN 37662, United States c Packaging Strategic Research, Kraft Foods, 200 DeForest Avenue, East Hanover, NJ 07936, United States |
| Abstract: | A non-invasive headspace analysis method to measure rate and amount of oxygen uptake in oxygen-scavenging polymers is presented. Oxygen uptake data for metal-catalyzed poly(1,4-butadiene) at 30 °C are provided to illustrate the method. These data were obtained by measuring oxygen headspace concentration above the scavenging polymer with an OxySense® 200T non-invasive oxygen sensor, and, for comparison, oxygen uptake was measured with an analytical balance. Excellent agreement was observed between these two independent experiments. |
| Keywords: | Oxygen scavenging Polybutadiene Oxidation |
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