Abstract: Nanocomposite based on poly (ethyleneterephthalateco-1, 4-cylclohexylenedimethylene terephthalate) (PETG), nano-ZnO, and copper chlorophyll acid (CCA) were prepared by melt blending. The effect of mass ratio of nano-ZnO/CCA on the antibacterial and mechanical properties was investigated. It was shown that significant increase of the antibacterial effect against Escherichia coli was observed after adding a small amount of CCA. When the mass ratio of nanoZnO was 1.0 % and the CCA content was 0.5 %, the best antibacterial effect was obtained: the antibacterial rate against Escherichia coli of the nanocomposite was proved to 99.9 %.

Key words: poly(ethylene terephthalateco-1, 4-cylclohexylenedimethylene terephthalate) (PETG), nano zinc oxide, copper chlorophyll acid, antibacterial behavior, mechanical property