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Driving the Green Transition: Innovative Tyre Formulation Using Agricultural and Pyrolysed Tyres Waste.

Carlo Di Bernardo1, Francesca Demichelis1, Mehran Dadkhah1

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Summary
This summary is machine-generated.

Sustainable rubber composites can be made by replacing carbon black (CB) with agricultural waste and pyrolyzed tire materials. This reduces environmental impact and production costs for eco-friendly tyre manufacturing.

Keywords:
LCALCCagricultural wastebio-based fillerrubber compositessustainabilitywaste tyres

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Area of Science:

  • Materials Science
  • Sustainable Chemistry
  • Polymer Engineering

Background:

  • The rubber industry faces environmental pressures due to non-renewable resource use and waste accumulation.
  • Conventional carbon black (CB) production is energy-intensive and relies on fossil fuels.
  • There is a growing need for sustainable alternatives in rubber composite formulations.

Purpose of the Study:

  • To investigate the feasibility of partially replacing CB with agricultural waste and pyrolyzed waste tyres in rubber composites.
  • To evaluate the impact of these sustainable fillers on the properties and performance of natural rubber/styrene-butadiene rubber (NR/SBR) composites for tyre applications.
  • To assess the environmental and economic viability of these replacements through Life Cycle Assessment (LCA) and Life Cycle Costing (LCC).

Main Methods:

  • Formulation of NR/SBR composites with varying ratios of CB, agricultural waste, and pyrolyzed tyre waste.
  • Characterization using SEM, BET, FTIR, bound rubber content, Payne effect, TGA, and DMTA.
  • Mechanical property testing (tensile strength, elongation at break, hardness).
  • Conducting LCA and LCC analyses.

Main Results:

  • Incorporation of agricultural waste and pyrolyzed tyre waste significantly influences curing behavior, mechanical properties, and thermal stability.
  • Some formulations achieved comparable tensile strength, elongation at break, and hardness to traditional CB-filled composites.
  • LCA and LCC indicated potential for reduced greenhouse gas emissions, fossil resource depletion, and production costs.

Conclusions:

  • Agricultural waste and pyrolyzed tyre waste are viable partial replacements for CB in NR/SBR composites.
  • These sustainable fillers offer a pathway to enhance the environmental and economic performance of tyre manufacturing.
  • The study supports the transition towards more sustainable practices in the rubber industry.