Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Fluorination could efficiently improve the comprehensive performance of nitrile-butadiene rubber (NBR). Here, a facile approach has been established for the fluorination of NBR via olefin cross metathesis (OCM) technique, with 1H,1H,2H,2H-perfluorooctyl acrylate (F13) as the model fluorinating chain transfer agent (F-CTA). The effect of reaction conditions on the fluorination degree (defined as the mass content of F13 in the fluorinated nitrile-butadiene rubber (F-NBR)) has been optimized, such as feeding ratios of F13 and Hoveyda-Grubbs II (HG2) catalyst, and the reaction time. The liquid F-NBR was obtained with fluorination degree of 1.84% at the optimized condition. Additionally, the reaction process was also proposed from the variations in the fluorination degree and molecular weight of the F-NBR products.
[Display omitted]
•Nitrile-butadiene rubber (NBR) was fluorinated via olefin cross metathesis (OCM).•The fluorination condition was optimized with a fluorination degree of 1.84%.•The reaction process was proposed as two-stage competitive reactions.