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Silica-Milled Paulownia Biochar as Partial Replacement of Carbon Black Filler in Natural Rubber

S. C. Peterson

Published 2019 in Unknown venue

ABSTRACT

Carbon black (CB) has been the dominant filler in the tire industry for decades. The demand for this petroleum byproduct is ever increasing, although petroleum markets can be volatile due to geopolitical issues. Finding sustainable, renewable substitutes for CB reduces the dependence on petroleum. Biochar is a renewable source of carbon that was studied as a potential CB replacement filler in styrene–butadiene rubber (SBR) composites, but little has been done in terms of natural rubber (NR). In this work, biochar made from fast-growing Paulownia elongata was co-milled with small amounts of silica in order to reduce the larger particle size typical with biochar respective to CB. The resulting silica-milled Paulownia biochar (PB) was then used to replace CB in natural rubber (NR) composites. By using this method to make natural rubber composites with 30% total filler, half of the CB was fully replaced with silica-milled biochar with very little loss (<6%) of tensile strength, and equal or better elongation and toughness compared to the 100% CB-filled control composite.

PUBLICATION RECORD

  • Publication year

    2019

  • Venue

    Unknown venue

  • Publication date

    2019-12-13

  • Fields of study

    Materials Science, Environmental Science

  • Identifiers
    DOI 10.3390/jcs3040107
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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