Additive manufacturing enables the creation of lighter, stronger parts and systems. To improve the 3-dimensional (3D) printed quality of bio-based composites, in this study, bamboo fibers were chemically modified via a two-step reaction. In the first step, NCO groups (of a diisocyanate) were grafted onto the surface of fibers, which were subsequently reacted with a polyol. The chemical modification was confirmed by spectroscopic analysis; the hydrophobicity, density, and thermal degradation of the fibers were also evaluated. Afterward, 3D-printed objects were produced using these fibers. First, the printability of these composites was assessed by analyzing their melting flow index (MFI) and glass transition temperature (T_g) values. Next, the enhancement of the 3D printing quality was confirmed by analyzing the morphology of the 3D-printed specimens. The advantage of using treated fibers was reflected in the improved mechanical performance of the obtained 3D specimens.

增材制造能够制造更轻、更坚固的零件和系统。为了提高生物基复合材料的 3D (3D) 打印质量，在本研究中，竹纤维通过两步反应进行了化学改性。在第一步中，NCO 基团（二异氰酸酯的）接枝到纤维表面，随后与多元醇反应。化学修饰经光谱分析证实；还评估了纤维的疏水性、密度和热降解。之后，使用这些纤维生产了 3D 打印物体。首先，通过分析它们的熔融流动指数 (MFI) 和玻璃化转变温度 ( T _g) 值。接下来，通过分析 3D 打印样品的形态来确认 3D 打印质量的提高。使用处理过的纤维的优势体现在所获得的 3D 样品的机械性能得到改善。