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通过紫外光接枝方法,以丙烯酸为单体对低密度聚乙烯薄膜进行表面改性,然后用聚酰胺胺(PAMAM)分子对羧基化的聚乙烯表面进行修饰,制备了表面固定PAMAM树形分子的低密度聚乙烯薄膜。通过接触角测量,衰减全反射红外光谱,扫描电镜等方法的表征,证明丙烯酸成功接枝到聚乙烯薄膜表面,聚酰胺胺树形分子通过与羧基的结合形成团簇结构,反映了接枝链在薄膜表面的聚集状态。
The low density polyethylene film was modified with acrylic acid monomer by UV grafting method, and the surface of the carboxylated polyethylene was modified with polyamidoamine (PAMAM) molecule to prepare the surface-immobilized PAMAM dendrimer Low-density polyethylene film. The results of contact angle measurement, total reflection infrared spectroscopy (ATF), scanning electron microscopy (SEM) showed that the acrylic acid was successfully grafted to the surface of the polyethylene film, and the polyamidoamine dendrimer formed a cluster structure by combining with the carboxyl group, Aggregation on the film surface.