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<p>The study explores the development of sustainable epoxy composite reinforced with cellulose extracted from corncob, an abundant agricultural waste, to address environmental concerns and enhance material properties. The cellulose from corncob was extracted using an optimized NaOH treatment. Epoxy composites with varying percentages (5 wt.%, 10 wt.% and 20 wt.%) of cellulose were prepared by hand casting method (labelled EC05, EC10 and EC20). The composites were characterized through mechanical (tensile, flexural and impact tests) and thermal tests (DSC analysis) along with FTIR, XRD and SEM analyses. The finding revealed that 5 wt.% cellulose loaded composite exhibited an enhancement in tensile (26.20&#xa0;MPa), flexural (47.47&#xa0;MPa) and impact strength (41.61&#xa0;J/m) by 44%, 104% and 63%, respectively, compared to EP. Higher filler concentration (10 wt.% and 20 wt.%) resulted in agglomeration of particles, which led to reduction in mechanical properties, due to matrix discontinuity and stress concentration. DSC revealed improved thermal stability with increased filler concentration. SEM images revealed relatively uniform filler dispersion in EC05, while FTIR and XRD confirmed cellulose incorporation and reduction in crystallinity at higher filler addition. These findings underline the feasibility of corncob cellulose as a sustainable reinforcement.</p>

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Sustainable epoxy composites: corncob cellulose as a reinforcement material

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • Vineet P. Karchi,
  • M. A. Umarfarooq,
  • Bipin S. Chikkatti,
  • Sharanappa Achappa,
  • M. Ashwini,
  • Nagaraj R. Banapurmath,
  • T. M. Yunus Khan,
  • Shaik Mohamed Shamsudeen,
  • Ashok M. Sajjan

摘要

The study explores the development of sustainable epoxy composite reinforced with cellulose extracted from corncob, an abundant agricultural waste, to address environmental concerns and enhance material properties. The cellulose from corncob was extracted using an optimized NaOH treatment. Epoxy composites with varying percentages (5 wt.%, 10 wt.% and 20 wt.%) of cellulose were prepared by hand casting method (labelled EC05, EC10 and EC20). The composites were characterized through mechanical (tensile, flexural and impact tests) and thermal tests (DSC analysis) along with FTIR, XRD and SEM analyses. The finding revealed that 5 wt.% cellulose loaded composite exhibited an enhancement in tensile (26.20 MPa), flexural (47.47 MPa) and impact strength (41.61 J/m) by 44%, 104% and 63%, respectively, compared to EP. Higher filler concentration (10 wt.% and 20 wt.%) resulted in agglomeration of particles, which led to reduction in mechanical properties, due to matrix discontinuity and stress concentration. DSC revealed improved thermal stability with increased filler concentration. SEM images revealed relatively uniform filler dispersion in EC05, while FTIR and XRD confirmed cellulose incorporation and reduction in crystallinity at higher filler addition. These findings underline the feasibility of corncob cellulose as a sustainable reinforcement.