Acetylated lignin fatty acid hybrid nanoparticles as well as preparation method and application thereof

The invention discloses acetylated lignin fatty acid hybrid nano particles as well as a preparation method and application thereof, and particularly relates to the technical field of lignin nano materials. The invention relates to a preparation method of acetylated lignin fatty acid hybrid nanoparticles, which comprises the following steps: modifying lignin by using an acetylation solution, respectively dissolving acetylated lignin and fatty acid in an ethanol-ethyl acetate solution, filtering to obtain filtrate of the acetylated lignin and the fatty acid, uniformly mixing the filtrate of the acetylated lignin and the fatty acid with the same volume to obtain mixed filtrate, and drying to obtain the acetylated lignin fatty acid hybrid nanoparticles. And dropwise adding water until the water accounts for 75-85% of the volume of the mixed filtrate, and carrying out solid-liquid separation to obtain the acetylated lignin fatty acid hybrid nanoparticles. Active groups in a lignin molecular structure are modified