Fabrication of flame retardant toughened PLA base 3D printed materials with modified lignin by phytic acid.

ABSTRACT: Lignin, a natural macromolecule rich in aromatic rings and hydroxyl groups, holds significant promise in environmentally friendly applications. In this study, a lignin-based flame retardant (lignin-diethylenetriamine-phytic acid, P₂N-lig) was synthesized through a Mannich reaction between alkali lignin and diethylenetriamine to introduce nitrogen, followed by phosphorylation with phytic acid to incorporate phosphorus. When P₂N-lig were added into PLA composites (T-PLA) which were toughened by TPU and MMT, the T-PLA/P₂N-lig composites demonstrated enhanced physicochemical and flame-retardant properties. The 9 wt% T-PLA/P₂N-lig formulation exhibited acceptable mechanical performance alongside significantly improved thermal stability and fire resist

SUBMITTER: Ren S 

PROVIDER: S-EPMC12519074 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature