Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Antibacterial Activity and Mechanical Properties of Poly(Lactic-Acid) Composites Containing Zeolite-type Inorganic Bacteriocide

  • Park, Yuri (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology) ;
  • Park, Tae-Hee (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology) ;
  • Lee, Rami (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology) ;
  • Baek, Jong-sung (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology) ;
  • Jhee, Kwang-Hwan (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology) ;
  • Bang, Daesuk (School of Science and Engineering of Chemical Materials, Kumoh National Institute of Technology)
  • Received : 2017.09.13
  • Accepted : 2017.09.22
  • Published : 2017.09.30
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Abstract

We studied the antibacterial effect and mechanical properties of PLA composites with in organic porous zeolite-type bacteriocides. The specimens were prepared by an intermeshing co-rotating twin screw extruder using different contents of inorganic bacteriocide. The degree of dispersion of the in organic bacteriocide in the PLA composite was confirmed by FE-SEM. The contents of Ag and Zn in the composite were also investigated by energy dispersive spectroscopy at different concentrations of the inorganic bacteriocide. The antibacterial effects were analyzed by turbidity analysis, shaking culture, and drop-test. The mechanical properties, such as the tensile and flexural properties, impact strength, and physical properties, were also investigated. As the content of inorganic bacteriocide increased, the antibacterial activity was increased, especially against Staphylococcus aureus. Mechanical properties, namely, tensile strength, elongation, flexural strength, and impact strength, tended to decrease with an increase in inorganic bacteriocide content, but the tensile and flexural modulus increased.

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References

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