Abstract
AbstractThe changes in the oxidative induction period of polyethylene and the concentration of antioxidant, 4,4′‐thio‐bis(3‐methyl‐6‐t‐butyl phenol), in polyethylene during thermal aging were investigated. The concentration decreased following a first‐order kinetics. The induction period depended only on the antioxidant concentration and was independent of the aging conditions. The Arrhenius plot of the rate constants of the concentration decrease was linear above and below the polyethylene melting range, and an activation energy was obtained. The main factor in the concentration decrease was the evaporation of the antioxidant from the surface, and the evaporation rate constant of the antioxidant dissolved in polyethylene was obtained.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Polymer Science: Polymer Chemistry Edition
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
