SEARCH Articles Figures Tables Oxidation polypropylene Polypropylene oxide Polypropylene oxide, oxidation Polypropylene thermal oxidative methods Standard Test Method for Thermal-Oxidative Stability of Polypropylene Using a Specimen Rotator Within an Oven Thermal Oxidative Degradation of Polypropylene Thermal oxidation Thermal oxidative degradation polypropylene Thermal oxides