| abstract |
The invention relates to the technical field of polylactic acid, and discloses a highly flame-retardant biomass-based modified polylactic acid film material, comprising the following formulation raw materials and components: DL-lactide, catalyst, cross-linking agent, phytic acid modified Graphene, chitosan, melamine. In the highly flame-retardant biomass-based modified polylactic acid film material, phytic acid modified graphene reacts with melamine to generate phytic acid melamine salt modified graphene, epichlorohydrin is a crosslinking agent, and phytic acid and chitosan The sugar is subjected to a cross-linking reaction to obtain phytic acid-chitosan cross-linked biomass-based graphene, and by in-situ polymerization, DL-lactide and the amino group of chitosan in the biomass-based graphene undergo a polymerization reaction, The polylactic acid film material is obtained, and the entire preparation process is a method of chemical covalent bonding, which improves the compatibility and dispersibility of graphene and polylactic acid film, and the nitrogen-rich phosphorus-rich graphene greatly enhances the polylactic acid film material. flame retardant properties. |