Oxidation and unzipping in ELIUM resin: Kinetic model for mass loss. (April 2021)

• Record Type: Journal Article
• Authors: Chebil, Mohamed Souheib; Bouaoulo, Guillaume; Gerard, Pierre; Euch, Salma EL; Issard, Hervé; Richaud, Emmanuel
• Is Part Of: Polymer degradation and stability. Volume 186(2021)
• Publication Date: 2021-04
• Subjects: Acrylic resin -- PMMA -- Thermal ageing -- Chain scissions -- Unzipping -- Kinetics; Polymers -- Deterioration -- Periodicals; Stabilizing agents -- Periodicals; Polymères -- Dégradation -- Périodiques; Stabilisants -- Périodiques; 668.9
• DOI: 10.1016/j.polymdegradstab.2021.109523
• Languages: English
• ISSNs: 0141-3910

Abstract

Highlights: thermal ageing of PMMA and ELIUM resin at temperatures fro 230 to 310°C under oxygen or nitrogen unzipping initiated by chain ends under nitrogen vs random chain scissions in presence of oxygen proposal of a kinetic model for fitting mass loss curves Abstract: This paper gives a first study of the thermal and thermal oxidative ageing of ELIUM® resins. Chain ends unzipping was observed to be the main degradation mechanism under nitrogen whereas an oxidation mechanism with random chain scissions is shown to predominate in presence of oxygen. A first simplified kinetic model is proposed and fits experimental results for thin films at temperatures ranging from 230 to 310°C under oxygen or nitrogen.