POLYMER STRUCTURE COMPRISING A BASE PLASTIC WITH A HYDRATED LAYER

The invention relates to a bacteria-repellent polymer structure, which comprises a base plastic selected from a polypropylene homopolymer, a polypropylene copolymer or acrylonitrile butadiene styrene; and a hydrated layer comprising one or more hydrophilic additives formed on the base plastics, optionally stabilizing the location of the hydrated layer on certain base plastics in the presence of a media plastic compatible with both the base plastics and the hydrophilic additives. In some examples, a hydrated layer is introduced into a base plastic through a media plastic, and sufficient hydroxyl groups are introduced into the surface of the base plastic to trap water molecules in a polymer matrix of the base plastic, imparting bacterial repellency properties. Before and after the hydration layer is introduced, the mechanical strength change of the basic plastic is smaller than 20% of the original mechanical strength, and the original mechanical strength refers to the strength of the basic plastic before the hy