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<p>This study explores the development of high-performance elastomeric composites through the synergistic combination of polymer blending and nanofiller reinforcement. Specifically, ternary rubber blends comprising natural rubber (NR), styrene-butadiene rubber (SBR), and acrylonitrile butadiene rubber (NBR) were reinforced with nanoclay (NC) to enhance mechanical and durability properties. The blend formulation consisted of 30 parts per hundred rubber (phr) each of NR and SBR, 40 phr of NBR, and 3 phr of Ultrablend 4000 as a compatibilizer, while NC loading was systematically varied. The incorporation of nanoclay not only stabilized the scorch time and shortened the optimum cure time but also significantly improved tensile strength, stress at 100% elongation, elongation at break, abrasion resistance, and compression set. The reduction in mole percent uptake with increasing NC content further indicated improved swelling resistance due to enhanced crosslinking density and barrier effects. Field emission scanning electron microscopy (FESEM) of tensile-fractured surfaces confirmed improved interfacial adhesion and NC dispersion within the NR/SBR/NBR matrix. The findings demonstrate the dual role of NC as both a reinforcing agent and a morphology stabilizer, highlighting its potential in designing multifunctional elastomeric materials with superior mechanical performance.</p>

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Influence of nanoclay on the mechanical and swelling resistance properties of ternary NR/SBR/NBR rubber blend composites

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • J. Srinivas,
  • M. S. Jagatheeshwaran,
  • S. Vishvanathperumal,
  • A. Elayaperumal

摘要

This study explores the development of high-performance elastomeric composites through the synergistic combination of polymer blending and nanofiller reinforcement. Specifically, ternary rubber blends comprising natural rubber (NR), styrene-butadiene rubber (SBR), and acrylonitrile butadiene rubber (NBR) were reinforced with nanoclay (NC) to enhance mechanical and durability properties. The blend formulation consisted of 30 parts per hundred rubber (phr) each of NR and SBR, 40 phr of NBR, and 3 phr of Ultrablend 4000 as a compatibilizer, while NC loading was systematically varied. The incorporation of nanoclay not only stabilized the scorch time and shortened the optimum cure time but also significantly improved tensile strength, stress at 100% elongation, elongation at break, abrasion resistance, and compression set. The reduction in mole percent uptake with increasing NC content further indicated improved swelling resistance due to enhanced crosslinking density and barrier effects. Field emission scanning electron microscopy (FESEM) of tensile-fractured surfaces confirmed improved interfacial adhesion and NC dispersion within the NR/SBR/NBR matrix. The findings demonstrate the dual role of NC as both a reinforcing agent and a morphology stabilizer, highlighting its potential in designing multifunctional elastomeric materials with superior mechanical performance.