Filaments of selected composites of NBR41–60 wt % HW lignin and 40 wt % HW lignin in nylon 12 were extruded at 210°C using a custom-designed single-shot extruder equipped with a single die. The filament diameter is ca. 2.5 mm. The materials were 3D printed on a LulzBot TAZ printer equipped with a 0.5-mm-diameter nozzle. The printing and the bed temperatures for HIPS and lignin-based composites are 230° and 100°C, respectively. All samples were 3D printed, with the same printing protocol for comparison. The Cura-LulzBot software was used to control the printing process.

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