Dechlorination of poly(vinyl chloride) by 1-butyl-3-methylimidazoliumhydroxide

X.L. He, Q. Zhou, X.Y. Li, P. Yang, J.M.N. Kasteren, van, Y.Z. Wang

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)


Highly efficient dechlorination of PVC has been realized at 180 degrees C and at atmospheric pressure, using 1-butyl-3-methylimidazoliumhydroxide ([Bmim]OH) as an environment-friendly reaction medium: in the absence of an external base or solvent the dechlorination efficiency is as high as 91.2%, while it is only 38.1% for PVC without ionic liquids. The dechlorination process follows first-order kinetics with apparent activation energy of 44 kJ mol(-1). Mechanistic analysis provides evidence for the equilibrium presence of carbene species, together with the hydroxide ions in [Bmim]OH, thus enhancing the dechlorination of PVC via a combined elimination and substitution mechanism. (C) 2011 Elsevier Ltd. All rights reserved
Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalPolymer Degradation and Stability
Issue number2
Publication statusPublished - 2012


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