Recyclable grease-proof cellulose nanocomposites with enhanced water resistance for food serving applications

Recyclable cellulose nanofibril (CNF) and lignin-containing (LCNF) coated wood flour composites were fabricated using a vacuum-filtration process for food serving applications. The had excellent mechanical, oil, grease barrier properties compared to commercial container. However, the with both LCNF CNF coating layers poor performance in wet conditions addition of 1 wt.% aluminum sulfate (alum) layer significantly improved water-resistance composites. + 1% alum inferior water resistance lower mechanical strength comparable higher than recyclability was assessed through disintegration samples subsequent reformation, it found that fully recyclable. could retain their oil after each recycling level. These recyclable bio-based nanocomposites can be an eco-friendly alternative currently used container systems use harmful chemicals.