Birchwood biochar as partial carbon black replacement in styrene-butadiene rubber composites

Steven C. Peterson, Sriraam R. Chandrasekaran, Brajendra K. Sharma

Research output: Contribution to journalArticlepeer-review

Abstract

Birchwood feedstock was used to make slow pyrolysis biochar that contained 89% carbon and <2% ash. This biochar was blended with carbon black (CB) as filler for styrene-butadiene rubber (SBR). Composites made from blended fillers of 25/75 biochar/CB were equivalent to or superior to their 100% CB analogs in terms of tensile strength and toughness at all filler concentrations. Composites made with 50/50 biochar/CB were equivalent to or superior to CB composites in tensile strength, elongation, and toughness properties at total filler concentrations up to 30%. These results demonstrate the potential to use renewable birchwood biochar to replace up to half the CB in certain SBR composites.

Original languageEnglish (US)
Pages (from-to)305-316
Number of pages12
JournalJournal of Elastomers and Plastics
Volume48
Issue number4
DOIs
StatePublished - Jun 2016

Keywords

  • Biochar
  • SBR
  • carbon black
  • pyrolysis
  • reinforcement

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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