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<p>The study was conducted to determine the optimal loading and sonication parameters to effectively use nanoclay to enhance the properties of Medium-Density Fibreboards (MDFs). Boards were fabricated using urea–formaldehyde (UF) resin loaded with varying concentrations of nanoclay (0%, 1%, 2%, and 3%). The nano-resin formulations were subjected to ultrasonication for different durations (10, 20, and 30&#xa0;min), followed by homogenization for 10&#xa0;min to enhance nanoclay dispersion. The results demonstrated that increasing the nanoclay content significantly improved key board properties including modulus of rupture (MOR), modulus of elasticity (MOE), screw withdrawal strength, and thickness swelling. The properties were also significantly impacted in a positive manner with respect to increasing sonication duration at a particular loading. Among all formulations, NC-3/30 (3% nanoclay-loaded samples sonicated for 30&#xa0;min) exhibited the best overall performance across all tested parameters. However, NC-2/20 (2% nanoclay-loaded samples sonicated for 20&#xa0;min) gave the most optimal results showing significant improvements compared to control samples. These findings highlight the potential of nanoclay as a functional additive for improving the performance and dimensional stability of MDFs, while also contributing to reduced formaldehyde content.</p>

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Optimal parameter for using nanoclay-loaded UF resin to manufacture enhanced MDFs

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Ismita Nautiyal,
  • Ritam Basu,
  • Diksha Bisht

摘要

The study was conducted to determine the optimal loading and sonication parameters to effectively use nanoclay to enhance the properties of Medium-Density Fibreboards (MDFs). Boards were fabricated using urea–formaldehyde (UF) resin loaded with varying concentrations of nanoclay (0%, 1%, 2%, and 3%). The nano-resin formulations were subjected to ultrasonication for different durations (10, 20, and 30 min), followed by homogenization for 10 min to enhance nanoclay dispersion. The results demonstrated that increasing the nanoclay content significantly improved key board properties including modulus of rupture (MOR), modulus of elasticity (MOE), screw withdrawal strength, and thickness swelling. The properties were also significantly impacted in a positive manner with respect to increasing sonication duration at a particular loading. Among all formulations, NC-3/30 (3% nanoclay-loaded samples sonicated for 30 min) exhibited the best overall performance across all tested parameters. However, NC-2/20 (2% nanoclay-loaded samples sonicated for 20 min) gave the most optimal results showing significant improvements compared to control samples. These findings highlight the potential of nanoclay as a functional additive for improving the performance and dimensional stability of MDFs, while also contributing to reduced formaldehyde content.