Preparation method of antibacterial polylactic acid non-woven material

The invention relates to the technical field of polylactic acid materials, in particular to a preparation method of an antibacterial polylactic acid non-woven material. The preparation method comprises the following steps that 1, surface modification treatment is carried out on the polylactic acid non-woven material in a normal-pressure dielectric barrier discharge (DBD) plasma device; 2, chitosangrafting finishing is carried out on the polylactic acid non-woven material which is subjected to the normal-pressure plasma treatment; and 3, the treated polylactic acid non-woven material is dippedinto a silver nitrate solution for antibacterial finishing. According to the preparation method of the antibacterial polylactic acid non-woven material, the process is simple, a raw material is greenand free of pollution, biocompatibility and natural degradability are achieved, surface modification is carried out on the polylactic acid non-woven material through a plasma-assisted method, nano-silver is reduced on the surf