TY - JOUR T1 - Thermal oxidation of polydicyclopentadiene - Changes in water absorption A1 - Huang,Jing A1 - Derue,Isabelle A1 - Le Gac,Pierre Yves A1 - Richaud,Emmanuel AD - Laboratoire PIMM, Arts et Metiers Institute of Technology, CNRS, CNAM, HESAM Université, F-75013, Paris, France AD - IFREMER, Service Matériaux et Structures, Centre de Brest BP70, 29280, Plouzané, France UR - https://doi.org/10.1016/j.polymdegradstab.2020.109219 DO - 10.1016/j.polymdegradstab.2020.109219 KW - Polydicycopentadiene KW - Water absorption KW - Thermal oxidation N2 - This paper describes water absorption in polydicyclopentadiene (PDCPD) and more specially the impact of thermal oxidation on its behavior. Unaged PDCPD is found to be almost hydrophobic consistently with its non-polar structure. During thermal oxidation, hydrophilicity progressively increases with ageing time. This increase is linked with the buildup of polar products (mainly ketones, carboxylic acids, hydroperoxides, alcohols). Moreover, it appears that water absorption in PDCPD obeys to Flory Huggins law for all conditions considered here. In the meantime, water diffusivity seems to decrease when oxidation level increases. Finally, a mastercurve that links carbonyl concentration, water diffusivity and water-polymer interaction parameter is proposed and allow changes of water resistance of PDCPD to be predicted. Y1 - 2020/10 PB - Elsevier BV JF - Polymer Degradation And Stability SN - 0141-3910 VL - 180 ID - 74466 ER -