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<p>Inspired by natural microstructures such as bamboo and Gramineous plants, this study developed a simple, low-cost and environmentally friendly method to fabricate cellulose/epoxy resin (CP) composite microtube foams. The core design involves using epoxy resin to mimic the reinforcing mechanism of lignin, to coat cellulose microtubes and promote their interconnection, thereby reconstructing a 3D network structure. By optimizing the concentration of epoxy resin in the preparation solution, CP composite foams with tunable physical and mechanical properties were achieved. Experimental results showed that the composite foams exhibit excellent comprehensive performance: the compressive modulus ranges from 2 to 67&#xa0;MPa, and the thermal conductivity is 0.052–0.092&#xa0;W/m·K, indicating good mechanical performance and thermal insulation. Additionally, the minimum cushioning coefficient reaches 2.48 (comparable to commercial expanded polystyrene, EPS), with a water contact angle (WCA) of 125° showing favorable hydrophobicity. These results suggest that the CP composite foams, with their balanced performance and eco-friendly preparation process, hold great potential as sustainable alternatives to conventional foam materials in applications such as thermal insulation and cushioning.</p>

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Cellulose/epoxy resin composite microtube foam

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Qingyuan Niu,
  • Zihao Chen,
  • Weitao Yuan,
  • Shuaifei Li,
  • Tangen Liang,
  • Kezheng Gao

摘要

Inspired by natural microstructures such as bamboo and Gramineous plants, this study developed a simple, low-cost and environmentally friendly method to fabricate cellulose/epoxy resin (CP) composite microtube foams. The core design involves using epoxy resin to mimic the reinforcing mechanism of lignin, to coat cellulose microtubes and promote their interconnection, thereby reconstructing a 3D network structure. By optimizing the concentration of epoxy resin in the preparation solution, CP composite foams with tunable physical and mechanical properties were achieved. Experimental results showed that the composite foams exhibit excellent comprehensive performance: the compressive modulus ranges from 2 to 67 MPa, and the thermal conductivity is 0.052–0.092 W/m·K, indicating good mechanical performance and thermal insulation. Additionally, the minimum cushioning coefficient reaches 2.48 (comparable to commercial expanded polystyrene, EPS), with a water contact angle (WCA) of 125° showing favorable hydrophobicity. These results suggest that the CP composite foams, with their balanced performance and eco-friendly preparation process, hold great potential as sustainable alternatives to conventional foam materials in applications such as thermal insulation and cushioning.