Surface Modification of Poly(ethylene terephthalate) by Photo-initiated Grafting of Sulfonamide-derived Monomer for Antimicrobial Activity
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초록
내용
PET is a widely used polyester in various applications, including food packaging, textiles, and medical devices. The demand for antimicrobial PET has been increasing to help reduce the spread of diseases. Current antimicrobial polymers, created by physically blending metallic materials like silver and copper, have washing durability due to weak interfacial forces. To solve this problem, we modified sulfonamides, which are used as antibiotics, to form covalent bonds on the PET surface. These sulfonamide-derived monomers can be synthesized easily in a single step. We employed a photo-induced grafting technique to attach these monomers to PET. This involved introducing a tertiary amino group as a type II photo-initiator through aminolysis, followed by UV irradiation with benzophenone, a type II photo-sensitizer. The successful introduction of sulfonamide is confirmed through FT-IR spectroscopy, and the homopolymer made from the synthesized monomer exhibit 99% antibacterial activity.