Print Email Facebook Twitter Biobased Polyurethane Coatings with High Biomass Content: Tailored Properties by Lignin Selection Title Biobased Polyurethane Coatings with High Biomass Content: Tailored Properties by Lignin Selection Author de Haro, J.C. Allegretti, C. Smit, A.T. Turri, S. D'Arrigo, P. Griffini, G. Publication year 2019 Abstract New biobased polyurethane (PU) coatings with high lignin content were developed and characterized in this work. These materials were based on a ?,?-diisocyanate monomer (1,4-bis(4-isocyanato-2-methoxyphenoxy)butane, VA-NCO) obtained from lignin-derived vanillic acid and its further cross-linking reaction with three different nonchemically modified technical lignins obtained from different pulping processes, namely, mild acetone organosolv, kraft, and soda. After determining the optimal VA-NCO/lignin mass ratio for each type of lignin, an in-depth characterization of the obtained PU coatings highlighted their high biomass content, effective cross-linking, improved thermal stability, hydrophobic character, good adhesion performance on different types of substrates, and tunable mechanical response. These properties were found to be well-correlated to the chemical-physical features of the parent lignins used (namely, molecular weight, glass transition temperature, distribution of phenylpropane subunits, and -OH content), thereby suggesting the possibility to predictively tailor the characteristics of such biobased PU coatings by lignin selection. The results of this study demonstrate that the reaction of a lignin-derived biobased diisocyanate with different chemically unmodified technical lignins represents an interesting pathway for the production of thermosetting PU coatings with a high biomass content that can find application as high-performance biobased materials alternative to traditional petroleum-based platforms. © 2019 American Chemical Society. Subject Energy EfficiencyEnergy / Geological Survey NetherlandsBiobasedBiomassCoatingLigninPolyurethaneVanillic acid To reference this document use: http://resolver.tudelft.nl/uuid:2f98dfcb-75da-4b89-a224-31e431ab1473 DOI https://doi.org/10.1021/acssuschemeng.9b01873/ TNO identifier 867957 Publisher American Chemical Society ISSN 2168-0485 Source ACS Sustainable Chemistry and Engineering, 11700-11711 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.