An international research team investigated the potential of unmodified kraft lignin as a functional filler in water-based coatings with antifouling properties. The incomplete wetting of the lignin particles by the binder was intended to promote the release of bioactive substances. Reading tip: Bio-based coatingsThe EC Tech Report “Bio-based Coatings” is a hand-picked compilation of all the key aspects concerning bio-based coatings, offering the latest technical developments. Despite the disappointing field results, the team of authors sees the presented formulation as a possible starting point for further research into bio-based fillers. Source: Journal of Coatings Technology and Research, Volume 21, Pages 993–1003, (2024)