This work reports a simple approach to prepare toughened 3D‐printed polymethacrylate (PMA) composites using surfactant‐modified chitosan (SMCS) particles at loadings between 2–10 wt%. Chitosan (CS) is modified with anionic surfactant, sodium dodecyl sulfate, via ionic complexation to facilitate compatibility and dispersion of CS to PMA matrix by non‐covalent interactions between the components. The study successfully demonstrates high‐accuracy 3D printing of composites with significant improvements in the overall mechanical properties. The composite with the best loading of 8 wt% SMCS shows a tensile modulus of 1.23 ± 0.05 GPa, a tensile strength at 49.8 ± 0.96 MPa, a yield stress at 33.3 ± 1.48 MPa, and a strain‐at‐failure 10.3 ± 0.61%, which are 45%, 40%, 32%, and 68% higher than neat PMA, respectively. This provides a significant improvement in toughness at 4.92 ± 0.55 MJ m⁻³ for the composite, 184% higher than that of neat PMA. The marked increase in toughness is due to enhanced filler‐matrix interactions which improve the ability of the 3D printed composite to absorb energy under tensile load. The results from this work provide new understandings into the strategies for design and preparation of stereolithography 3D printed materials reinforced with toughening fillers from renewable resources.

中文翻译：

---

关于使用表面活性剂复合壳聚糖增韧3D打印的聚甲基丙烯酸酯复合材料

这项工作报告了一种简单的方法，该方法使用表面活性剂改性的壳聚糖（SMCS）颗粒以2-10 wt％的负载量制备增韧的3D打印的聚甲基丙烯酸甲酯（PMA）复合材料。壳聚糖（CS）用阴离子表面活性剂十二烷基硫酸钠改性，通过离子络合作用，通过组分之间的非共价相互作用促进CS与PMA基质的相容性和分散性。这项研究成功地演示了复合材料的高精度3D打印，整体机械性能有了显着改善。最佳负载为8 wt％SMCS的复合材料的拉伸模量为1.23±0.05 GPa，拉伸强度为49.8±0.96 MPa，屈服应力为33.3±1.48 MPa，失效应变为10.3±0.61％ ，分别比纯PMA高出45％，40％，32％和68％。复合材料的^-3，比纯PMA高184％。韧性的显着提高归因于增强的填料-基体相互作用，从而提高了3D打印复合材料在拉伸载荷下吸收能量的能力。这项工作的结果为使用可再生资源的增韧填料增强的立体光刻3D打印材料的设计和制备策略提供了新的认识。