Results and discussion
The mechanical properties of PLA composites with over 10 wt% Bamboo Charcoal particles were not evaluated in this study because of the limitation in the manufacturing process. Bamboo Charcoalself is a
self-lubricity material [46], high content of the Bamboo Charcoal particles added into the PLA can reduce the viscosity in a great extent during the injection moulding Although PLA reinforced by a small amount of Bamboo Charcoal particles could produce a low-viscosity melt that easily flow into small gates, into thin wall sections and even most complex mould cavities under low injection pressure, too much particles(> 10 wt%, based on the experimental finding [46]) would cause the difficulty in moulding process as the viscosity is dramatically dropped. The viscosity of the Bamboo Charcoal/PLA mixture is too low and it would raise the leakage in the feed lines during the process