biostudies-literatureUnknown26(7)Maßmann SCThe coatings industry is aiming to replace petrochemical-based binders in products such as paints and lacquers with bio-based alternatives. Native polysaccharide additives are already used, especially as adhesives, and here we show the use of oxidised dextran as a bio-based binder additive. Linear dextran with a molecular weight of 6 kDa was aerobically oxidised in water at the C3-position of its glucose units, catalysed by [(neocuproine)PdOAc]₂(OTf)₂. The resulting keto-dextran with different oxidation degrees was studied using adipic dihydrazide as a crosslinker in combination with the commercial petrochemical-based binder Joncryl®. Coating experiments show that part of the Joncryl® can be replaced by keto-dextran while maintaining the desired performance.Green chemistry : an international journal and green chemistry resource : GC4005-4012https://www.ebi.ac.uk/biostudies/studies/S-EPMC10986772biostudies-literatureRegioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings.PMC10986772Metselaar GAvan den Berg KJMinnaard AJWitte MDvan Dijken DJMaßmann SCfalseRegioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings.The coatings industry is aiming to replace petrochemical-based binders in products such as paints and lacquers with bio-based alternatives. Native polysaccharide additives are already used, especially as adhesives, and here we show the use of oxidised dextran as a bio-based binder additive. Linear dextran with a molecular weight of 6 kDa was aerobically oxidised in water at the C3-position of its glucose units, catalysed by [(neocuproine)PdOAc]₂(OTf)₂. The resulting keto-dextran with different oxidation degrees was studied using adipic dihydrazide as a crosslinker in combination with the commercial petrochemical-based binder Joncryl®. Coating experiments show that part of the Joncryl® can be replaced by keto-dextran while maintaining the desired performance.2024-01-01T00:00:00Z2024 Apr2024-12-04T06:21:06.616Z2024-12-04T06:21:06.616ZS-EPMC109867723857172810.1039/d3gc04204a