Designing of cradle-to-cradle loops for elastomer products

W.K. Dierkes*, K. Dijkhuis, H. van Hoek, J.W.M. Noordermeer, L.A.E.M. Reuvekamp, S. Saiwari, A. Blume

*Corresponding author for this work

Research output: Contribution to journalArticleAcademic

1 Citation (Scopus)
60 Downloads (Pure)

Abstract

Reuse of devulcanisates in virgin rubber compounds is the shortest loop in cradle-to-cradle cycles for elastomers. Due to the enormous complexity of these loops, the technology still stands in its infancy. Two elastomer types, EPDM (Ethylene–Propylene-Diene Terpolymer) and SBR (Styrene–Butadiene Rubber), are compared as to their ease of devulcanisation with an optimized devulcanisation aid. EPDM is relatively easy to devulcanise into a quality which allows for reuse of large amounts till 50% in virgin compounds for applications like roofing sheets and others. This is already being done on industrial scale. SBR is more difficult to devulcanise due to re-crosslinking under the influence of oxygen. Furthermore, tyre scrap is a mix of compounds and elastomers, which are impossible to segregate before devulcanisation. A lot more research and development is needed to bring this to a success.

Original languageEnglish
Pages (from-to)3-13
Number of pages11
JournalPlastics rubber and composites
Volume48
Issue number1
DOIs
Publication statusPublished - 16 Jul 2018

Keywords

  • UT-Hybrid-D
  • Cradle-to-cradle
  • Elastomers
  • EPDM
  • Polymers
  • Processing
  • Properties
  • Recycling
  • SBR
  • Applications

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