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<p>Three rosin-based multifunctional ultraviolet (UV) resins were successfully synthesized from dehydroabietylamine (DHAA) via a Michael addition reaction under solvent-free and low-temperature conditions. The structures of the obtained oligomers were confirmed by amine value titration, FT-IR, and ¹H NMR spectroscopy, with conversions exceeding 95%. The resulting UV-curable systems exhibited excellent thermal stability, showing initial decomposition temperatures above 243&#xa0;°C, maximum decomposition rate temperatures exceeding 426&#xa0;°C, and glass transition temperatures surpassing 90&#xa0;°C. With 50% 4‑acryloylmorpholine (ACMO) as a diluent, the cured resins based on rosin-based tetrafunctional UV resin (DHPE), rosin-based hexafunctional UV resin (TMEADH), and rosin-based decafunctional UV resin (DHPEAP) displayed tensile strengths of 46, 46, and 45&#xa0;MPa and glass transition temperatures of 131.9, 114.7, and 139.6&#xa0;°C, respectively. Molecular dynamics simulations revealed the interaction mechanisms between the resins and ACMO. Owing to its balanced mechanical and rheological performance, TMEADH was selected for LCD-based 3D printing, producing models with high structural integrity and fine feature resolution. This work provides a simple, green synthetic strategy for preparing high-performance, bio-based, multifunctional UV resins from rosin, demonstrating their promising potential in additive manufacturing.</p>

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Rosin-Based Multifunctional UV-Curable Resins with Tunable Acrylate Functionality and Hydroxyl Groups: Preparation and 3D Printing Applications

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • Linbin Jiang,
  • Peng Yang,
  • Mingyang Gu,
  • Shengfeng Ye,
  • Sijie Wang,
  • Yuxin Fu,
  • Yueyan Wang,
  • Chuanxiang Wang,
  • Xinyang Wang,
  • Xiaoping Rao

摘要

Three rosin-based multifunctional ultraviolet (UV) resins were successfully synthesized from dehydroabietylamine (DHAA) via a Michael addition reaction under solvent-free and low-temperature conditions. The structures of the obtained oligomers were confirmed by amine value titration, FT-IR, and ¹H NMR spectroscopy, with conversions exceeding 95%. The resulting UV-curable systems exhibited excellent thermal stability, showing initial decomposition temperatures above 243 °C, maximum decomposition rate temperatures exceeding 426 °C, and glass transition temperatures surpassing 90 °C. With 50% 4‑acryloylmorpholine (ACMO) as a diluent, the cured resins based on rosin-based tetrafunctional UV resin (DHPE), rosin-based hexafunctional UV resin (TMEADH), and rosin-based decafunctional UV resin (DHPEAP) displayed tensile strengths of 46, 46, and 45 MPa and glass transition temperatures of 131.9, 114.7, and 139.6 °C, respectively. Molecular dynamics simulations revealed the interaction mechanisms between the resins and ACMO. Owing to its balanced mechanical and rheological performance, TMEADH was selected for LCD-based 3D printing, producing models with high structural integrity and fine feature resolution. This work provides a simple, green synthetic strategy for preparing high-performance, bio-based, multifunctional UV resins from rosin, demonstrating their promising potential in additive manufacturing.