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<p>In this work, we report the synergistic effect of the addition of natural fibers—specifically, microcrystalline cellulose (MCC), and <i>Cocos nucifera</i> fibers (CNF)—into a photocurable resin composed of polyethylene glycol diacrylate (PEGDA) and acrylated epoxidized soybean oil (AESO). This formulation is aimed at improving the dimensional and thermal stability in 3D printing applications, where printing accuracy is a critical parameter. By evaluating thermal expansion coefficients, mechanical and dynamic properties, microscopy, and thermogravimetric behavior, it was found that the combination of MCC/CNF fillers and post-curing heat treatment led to measurable improvement in the dimensional and thermal stability of samples fabricated <i>via</i> vat photopolymerization using MSLA technology. These findings provide a basis for future research focused on enhancing resolution in MSLA-based 3D printing.</p> Graphical Abstract <p></p>

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Effect of microcrystalline cellulose and Cocos nucifera fibers on the dimensional and thermal stability of a plant-based resin for vat photopolymerization 3D printing

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Isa Pereyra,
  • Mariamne Dehonor-Gómez,
  • Jan Mayen,
  • Miguel A. González-López,
  • Luis E. Lugo-Uribe

摘要

In this work, we report the synergistic effect of the addition of natural fibers—specifically, microcrystalline cellulose (MCC), and Cocos nucifera fibers (CNF)—into a photocurable resin composed of polyethylene glycol diacrylate (PEGDA) and acrylated epoxidized soybean oil (AESO). This formulation is aimed at improving the dimensional and thermal stability in 3D printing applications, where printing accuracy is a critical parameter. By evaluating thermal expansion coefficients, mechanical and dynamic properties, microscopy, and thermogravimetric behavior, it was found that the combination of MCC/CNF fillers and post-curing heat treatment led to measurable improvement in the dimensional and thermal stability of samples fabricated via vat photopolymerization using MSLA technology. These findings provide a basis for future research focused on enhancing resolution in MSLA-based 3D printing.

Graphical Abstract