Department of Materials Science and Engineering , The University of Tennessee Knoxville , Knoxville , Tennessee 37996 , United States.
ACS Appl Mater Interfaces. 2018 Oct 24;10(42):36456-36463. doi: 10.1021/acsami.8b13031. Epub 2018 Oct 10.
Generating compatible and competitive materials that are environmentally sustainable and economically viable is paramount for the success of additive manufacturing using renewable materials. We report the successful application of renewable, modified lignin-containing photopolymer resins in a commercial stereolithography system. Resins were fabricated within operable ranges for viscosity and cure properties, using up to 15% modified lignin by weight. A 4-fold increase in ductility in cured parts with higher lignin concentration is noted compared to commercial stereolithography resins. Excellent print quality was seen in modified lignin resins, with good layer fusion, high surface definition, and visual clarity. These materials can be used to generate new products for additive manufacturing applications and help fill vacant material property spaces, where ductility, sustainability, and application costs are critical.
对于使用可再生材料的增材制造的成功而言，生成具有环境可持续性和经济可行性的兼容且有竞争力的材料至关重要。我们报告了可再生、改性含木质素光聚合物树脂在商业立体光刻系统中的成功应用。使用高达 15%重量的改性木质素，在可操作的粘度和固化性能范围内制造了树脂。与商业立体光刻树脂相比，在木质素浓度较高的固化部件中，延展性提高了 4 倍。在改性木质素树脂中观察到良好的打印质量，具有良好的层融合性、高表面清晰度和视觉清晰度。这些材料可用于为增材制造应用生成新产品，并有助于填补韧性、可持续性和应用成本至关重要的空缺材料性能空间。
