Retarding effect of carboxyl-containing dissolved organic matter derived from the thermochemical conversion of spent coffee grounds on formaldehyde-free water-based coatings

Key Points

• The research aims to assess how carboxyl-containing dissolved organic matter from spent coffee grounds affects water-based coatings.
• Utilized thermochemical conversion to obtain carboxylated dissolved organic matter from spent coffee grounds.
• Evaluated the impact of this DOM on the performance of formaldehyde-free water-based coatings.
• Conducted comparative analyses to determine retardation effects on coating drying and performance.
• The presence of carboxylated DOM significantly retards the drying time of water-based coatings.
• Coatings formulated with this DOM exhibited changes in texture and adhesion properties.
• Formaldehyde-free coatings showed improved stability when using SCG-derived carboxylated DOM.