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<p>We report a random acrylate terpolymer (MMA-co-MA-co-BA) engineered to produce a ductile, additive-free material suitable for fused filament fabrication feedstocks. The incorporation of acrylate comonomers ensures flexibility and thermal stability of the material. By tuning the glass transition (<i>T</i><sub>g</sub> = 36.3°C), the material facilitates a thermal environment conducive to inter-bead polymer diffusion. This enables the material to achieve an isotropic elastic stiffness (~ 1400&#xa0;MPa) and retain 80% of its longitudinal strength under transverse loading, theoretically driven by enhanced chain reptation across the deposition interfaces, validating its utility for functional additive manufacturing.</p> Graphical abstract <p></p>

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Achieving elastic isotropy in fused filament fabrication via the macromolecular design of acrylate terpolymers

  • 期刊论文

  • 发表日期：

    2026年7月14日

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  • Sergio Antonio González-Ortiz,
  • Odilia Pérez-Camacho,
  • José de Jesús Kú-Herrera,
  • Maricela García-Zamora,
  • Víctor Eduardo Comparán-Padilla

摘要

We report a random acrylate terpolymer (MMA-co-MA-co-BA) engineered to produce a ductile, additive-free material suitable for fused filament fabrication feedstocks. The incorporation of acrylate comonomers ensures flexibility and thermal stability of the material. By tuning the glass transition (Tg = 36.3°C), the material facilitates a thermal environment conducive to inter-bead polymer diffusion. This enables the material to achieve an isotropic elastic stiffness (~ 1400 MPa) and retain 80% of its longitudinal strength under transverse loading, theoretically driven by enhanced chain reptation across the deposition interfaces, validating its utility for functional additive manufacturing.

Graphical abstract