Regioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings.
Green Chem
; 26(7): 4005-4012, 2024 Apr 02.
Article
en En
| MEDLINE
| ID: mdl-38571728
ABSTRACT
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.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Green Chem
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Reino Unido