BioCell-filament

Important results from the project

Filament based printing is the most common technology in additive manufacturing with plastics. The demand for filaments is significantly higher than the supply, and there is a great need to replace fossil materials. In this project, we sought to replace carbon fiber with nanocellulose. We have developed a nanocellulose composite, which has the potential to supplement carbon fiber in certain filaments, and also as a material reinforcer for future bio-plastics. However, more development is needed before it can be used as a 3D filament.

Expected long term effects

Reinforced 3D filament can be made more environmentally friendly if petroleum-based carbon fiber is replaced with modified nanocellulose. If nanocellulose-reinforced biocomposite obtains improved mechanical properties, other less environmentally friendly plastics can also be replaced. The nanocellulose was manufactured with a new environmentally friendly catalyst (patented). Replacing carbon fiber can also reduce the problems with wear on nozzles and screws. In addition, carbon fiber is harmful to health in the production and conversion.

Approach and implementation

This project was carried out as a collaboration between universities and companies. Mid Sweden University and Organofuel Sweden AB produced modified nanocellulose, which was compounded into granules at Trifilon AB. Infold AB converted the granules into 3D writing filaments. The material was mechanically characterized at Trifilon AB and tested for writability at Infold AB. We found the set-up good; where each project partner contributed with their respective expertise, and the project group intends to further develop concepts we have found within the project.