Reaction mechanism of halogenated rubber crosslinking using a novel environmentally friendly curing system

Anna Dziemidkiewicz*, Rafał Anyszka, Anke Blume, Magdalena Maciejewska

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
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Abstract

Iron (III) acetylacetonate (Fe (acac)) in the presence of triethanolamine (TEOA) was utilized as a novel crosslinking agent for halogenated diene rubber. Following the assumption that the mechanism of the crosslinking bases on the Heck-type reaction mechanism, which requires the presence of a halogen and an unsaturated carbon-carbon double bond, chloroprene rubber (CR) and brominated butyl rubber (BIIR) were utilized as rubber matrices. The results of FTIR spectra analysis confirm the proposed mechanism and indicate that a Heck-type reaction is feasible for performing a crosslinking of halogenated diene rubbers. The use of the Fe (acac)/TEOA curing system results in a significant torque increase during the vulcanization, which confirms the high activity of those compounds. The elimination of halogen from a rubber macromolecular structure or elimination of a basic environment of the crosslinking reaction results in a deactivation of the new curing system.

Original languageEnglish
Article number106354
JournalPolymer testing
Volume84
DOIs
Publication statusPublished - Apr 2020

Keywords

  • UT-Hybrid-D
  • Brominated butyl rubber
  • Chloroprene rubber
  • Crosslinking
  • Heck-type reaction
  • Acetylacetonates

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