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Controlled Metathetic Depolymerization of Natural Rubber in Ionic Liquids: From Waste Tires to Telechelic Polyisoprene Oligomers

Abstract : A controlled degradation process enabling Natural Rubber (NR) depolymerization and using the olefin metathesis reaction in ionic liquid medium is reported. Using trihexyl-(tetradecyl)phosphonium chloride (Cyphos101) and N,N-dioctylimidazolium bromide (C8C8ImBr), low-dispersity telechelic polymers are produced. With N,N-dioctylimidazolium bromide (C8C8ImBr), the degradation process could be performed for five consecutive cycles with excellent control. This degradation process was successfully applied to waste tires.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-01698464
Contributor : Isabelle Dez <>
Submitted on : Thursday, February 1, 2018 - 12:10:43 PM
Last modification on : Thursday, July 2, 2020 - 3:21:27 AM

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Ali Mouawia, Arnaud Nourry, Annie-Claude Gaumont, Jean-Francois Pilard, Isabelle Dez. Controlled Metathetic Depolymerization of Natural Rubber in Ionic Liquids: From Waste Tires to Telechelic Polyisoprene Oligomers. ACS Sustainable Chemistry & Engineering, American Chemical Society, 2017, 5 (1), pp.696 - 700. ⟨10.1021/acssuschemeng.6b01777⟩. ⟨hal-01698464⟩

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