In this diploma thesis we made a filament from polyvinyl alcohol and ground hazelnut shells.
We chose the latter because it is one of the biobased residual material that can be completely
degraded and would otherwise be thrown away. The filament was made from both powdered
input materials, mixed in different concentrations and granulated; the resulted granules were
extruded. For the resulting filament we performed analyses of mechanical properties and
checked the homogeneity of the material under a microscope. We found that are mixtures
up to 30 % suitable for the production of filament, but the mechanical properties worsen
with increasing proportion of hazelnut shells. After the experiment, we made suggestions for
possible improvements.
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