▎ 摘　　要

NOVELTY - The preparation method of graphene-modified polylactic acid fiber involves adding 40-60 wt.% graphene powder and 10-30 wt.% dispersant to 10-30 wt.% surfactant and then stirring, adding polylactic acid powder to the mixture and then extruding, pelletizing the mixture, adding 5-12 wt.% graphene masterbatch to 88-95 wt.% polylactic acid slices and spinning. The dispersant is sodium dodecylbenzenesulfonate, sodium deoxycholate or polyvinyl alcohol. USE - The method is useful for preparation of graphene-modified polylactic acid fiber. ADVANTAGE - The method enables preparation of graphene-modified polylactic acid fiber with excellent antibacterial properties, static resistance, biodegradability and wear resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene-modified polylactic acid fiber prepared by the method.