A custom-built MEW printer similar to a previously described machine was used in order to process the neat polymer and different ratios of polymer:IND extrudates. The 3 mL glass syringes (Poulten & Graf GmbH, Germany) were loaded with different materials and heated for a minimum of 30 minutes prior to printing until the bubbles within the melt dissipated. For all experiments, a nozzle tip with an inner diameter of 0.337 mm (23G) was used and manually grinded to a length of 13 mm. Other applied printing parameters are listed in Table . and kept at constant temperature for 5 h and then, further heated to 900°C to detect the mass loss. The thermograms were evaluated using Origin software (OriginPro 2021. OriginLab