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<p>This study investigates the reinforcing effect of modified nanosilica (mNS) on natural rubber (NR) and acrylonitrile butadiene rubber (NBR) composites, with epoxidized natural rubber (ENR) used as a compatibilizer. Nanosilica (NS)-filled nanocomposites were developed and systematically analyzed for their morphological, rheological, and mechanical properties. Key findings indicate that increasing the mNS content from 0 to 10 phr enhances mechanical performance, including hardness, tear resistance, and abrasion resistance. Notably, the 70/30 NR/NBR blend with 6 phr of mNS exhibited a 128% increase in tensile strength and a 58% rise in stress at 100% elongation compared to unfilled NR/NBR. These improvements are attributed to the high surface area and uniform dispersion of mNS, which enhance interfacial interactions within the polymer matrix. Furthermore, higher mNS concentrations improved swelling resistance, reinforcing the nanofiller’s effectiveness in enhancing overall composite performance. These findings highlight the potential of mNS-reinforced NR/NBR composites for advanced elastomer applications.</p>

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Morphology and performance of nanosilica filler filled NR/NBR rubber composites

  • 期刊论文

  • 发表日期：

    2025年5月31日

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  • V. Sivaramakrishnan,
  • S. Vishvanathperumal,
  • V. Navaneethakrishnan,
  • G. Anand

摘要

This study investigates the reinforcing effect of modified nanosilica (mNS) on natural rubber (NR) and acrylonitrile butadiene rubber (NBR) composites, with epoxidized natural rubber (ENR) used as a compatibilizer. Nanosilica (NS)-filled nanocomposites were developed and systematically analyzed for their morphological, rheological, and mechanical properties. Key findings indicate that increasing the mNS content from 0 to 10 phr enhances mechanical performance, including hardness, tear resistance, and abrasion resistance. Notably, the 70/30 NR/NBR blend with 6 phr of mNS exhibited a 128% increase in tensile strength and a 58% rise in stress at 100% elongation compared to unfilled NR/NBR. These improvements are attributed to the high surface area and uniform dispersion of mNS, which enhance interfacial interactions within the polymer matrix. Furthermore, higher mNS concentrations improved swelling resistance, reinforcing the nanofiller’s effectiveness in enhancing overall composite performance. These findings highlight the potential of mNS-reinforced NR/NBR composites for advanced elastomer applications.