Fully bio-based phosphorus/nitrogen-functionalized cellulose nanocrystals for flame-retardant and mechanically strong castor oil-based polyurethane.
The development of highly flame-retardant bio-based polyurethanes is critical for aligning material sustainability with public safety requirements. In this work, a fully bio-based flame retardant based on phosphorus/nitrogen-functionalized cellulose nanocrystals (CNC-PDA-PA) was synthesized through a three-step environ...