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<p>Acrylonitrile-butadiene rubber (NBR) composites reinforced with surface-modified graphene oxide were prepared via melt compounding. Graphene oxide was functionalised using 3-aminopropyltriethoxysilane (KH550), 4,4′-diphenylmethane diisocyanate (MDI), and octadecylamine (ODA), and the effects of these modifications on curing, mechanical, swelling, and durability properties were evaluated. The modified fillers enhanced torque and reduced curing time compared to neat NBR. At 6 phr loading, tensile strength improved by 132% with GO, 139% with KHGO, 164% with MDGO, and 185% with ODGO. While elongation at break and rebound resilience decreased with filler loading, hardness, compression set, crosslinking density, swelling, and abrasion resistance increased up to 6 phr but declined at higher contents. Among the fillers, ODA-modified GO offered the best reinforcement, outperforming MDI- and KH550-modified GO as well as unmodified GO.</p>

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Preparation and properties of surface-modified graphene oxide for reinforcement in acrylonitrile-butadiene rubber composites

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • C. Krishnamurthy,
  • V. Chandran,
  • S. Vishvanathperumal

摘要

Acrylonitrile-butadiene rubber (NBR) composites reinforced with surface-modified graphene oxide were prepared via melt compounding. Graphene oxide was functionalised using 3-aminopropyltriethoxysilane (KH550), 4,4′-diphenylmethane diisocyanate (MDI), and octadecylamine (ODA), and the effects of these modifications on curing, mechanical, swelling, and durability properties were evaluated. The modified fillers enhanced torque and reduced curing time compared to neat NBR. At 6 phr loading, tensile strength improved by 132% with GO, 139% with KHGO, 164% with MDGO, and 185% with ODGO. While elongation at break and rebound resilience decreased with filler loading, hardness, compression set, crosslinking density, swelling, and abrasion resistance increased up to 6 phr but declined at higher contents. Among the fillers, ODA-modified GO offered the best reinforcement, outperforming MDI- and KH550-modified GO as well as unmodified GO.