Table 1. Parameters of Extruded PHB Polymer Filaments.

PHB polymer membrane	extrusion temperature (°C)	extruder motor speed (rpm)
PHB granule	165	10
first cycle of the printed membrane, PHB-1	165	10
second cycle of the printed membrane, PHB-2	155	10
third cycle of the printed membrane, PHB-3	145	10 (unsuccessful)