Method for modifying surface of BOPP (Biaxially-oriented Polypropylene) film by using dopamine and modified BOPP film

The invention relates to the field of polymer modification, in particular to a method for modifying the surface of a BOPP (biaxially-oriented polypropylene) film by using dopamine and a modified BOPP film, and the modification process comprises the following steps: preparing a trihydroxymethyl aminomethane (Tris) buffer solution, dissolving dopamine hydrochloride in the Tris buffer solution to form a dopamine buffer solution, soaking the BOPP film in the dopamine buffer solution to enable the dopamine to complete auto-polymerization, and drying the BOPP film to obtain the modified BOPP film. The modification of the dopamine on the BOPP film is realized. According to the method, the surface of the BOPP film can be modified by a simple method, the hydrophilicity of the surface of the film is improved, and the required solvent only contains deionized water, is safe and environment-friendly, and does not cause damage to the environment. 本申请涉及聚合物改性领域，尤其一种用多巴胺对BOPP膜表面改性的方法和改性BOPP膜，其改性过程包括：配置三羟甲基氨基甲烷(Tris)缓冲液，将盐酸多巴胺