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

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• 作者：Ali Mouawia ; Arnaud Nourry ; Annie-Claude Gaumont ; Jean-François Pilard ; Isabelle Dez
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：5
• 期：1
• 页码：696-700
• 全文大小：281K
• ISSN：2168-0485

文摘

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.