Colloidal Lignin Particles and Epoxies for Bio-Based, Durable, and Multiresistant Nanostructured Coatings
Alexander Henn, Nina Forsman, Tao Zou, Monika Österberg
Abstract
, resulting in water contact angle values of up to 120°. Due to their spherical shape and chemical structure, the CLPs acted as both a hardener and a particulate component in the coating, which removed the need for an underlying binding polymer matrix. Light interferometry measurements showed that while commercial polymeric film-forming coatings smoothened the substrate noticeably, the particulate morphology retained the substrate's roughness in lightweight coatings, allowing for a high water contact angle. This work presents new strategies for lignin applications in durable particulate coatings and their advantages compared to both currently used synthetic and bio-based coatings.
Topics & Concepts
Materials scienceCoatingLigninContact angleComposite materialAbrasion (mechanical)Substrate (aquarium)WaxEpoxyColloidChemical engineeringOrganic chemistryOceanographyChemistryEngineeringGeologyLignin and Wood ChemistryPolymer composites and self-healingWood Treatment and Properties