Lignin processing into coatings and thermoplastics

Lignin holds the potential for increased utilization of forest biomass in material applications. By combining fundamental lignin expertise and applied research, the LigninPath project is building research where universities and the Finnish industry seek solutions in collaboration. Only through holistic research can we meet the need for technologically and economically viable processing routes from lignin to value-added products.

The goals are in integrable processing routes for converting lignin into coatings and thermoplastic resins, based on membrane and extrusion technologies, meaning a low-energy processing concept directly from black liquor to lignin-based coatings. In addition to lignin processing, the project develops scalable green processes for i) latex-type products, ii) thermoplastic resins, and iii) UV-curable resins. Alongside suspension processing, a pathway based on reactive extrusion is being investigated. Performance in applications will be tested using realistic product models in collaboration with industrial partners. Sustainability and technical feasibility are key research focuses alongside chemical process development.

The consortium is established with high-quality research expertise and industrial application in mind. Three research organizations are strong partners in the project's planning and execution. These are the University of Helsinki (UH) (Project Coordinator), Åbo Akademi University (ÅAU), and the University of Turku (UTU). International collaboration will take place with the Technical University of Denmark (DTU). Finnish companies support the project as steering group members and contribute their expertise. The entire value chain from lignin separation from biomass to the application of new coating materials in products is represented, and hopes are high for establishing new lignin-based value chains.