Thermal oxidation of polydicyclopentadiene - Changes in water absorption

Type Article
Date 2020-10
Language English
Author(s) Huang Jing1, Derue Isabelle1, Le Gac Pierre YvesORCID2, Richaud Emmanuel1
Affiliation(s) 1 : Laboratoire PIMM, Arts et Metiers Institute of Technology, CNRS, CNAM, HESAM Université, F-75013, Paris, France
2 : IFREMER, Service Matériaux et Structures, Centre de Brest BP70, 29280, Plouzané, France
Source Polymer Degradation And Stability (0141-3910) (Elsevier BV), 2020-10 , Vol. 180 , P. 109219 (7p.)
DOI 10.1016/j.polymdegradstab.2020.109219
WOS© Times Cited 1
Keyword(s) Polydicycopentadiene, Water absorption, Thermal oxidation
Abstract

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.

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