Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation of Coating Film with Antibacterial and Antifogging Function on PET Substrate

PET 기재 위에 항균성과 김서림 방지 기능을 갖는 코팅 도막 제조

  • Ho Chan Kwon (Department of Biomedical Materials, Konyang University) ;
  • Ki Chang Song (Department of Biomedical Materials, Konyang University)
  • 권호찬 (건양대학교 의료신소재학과) ;
  • 송기창 (건양대학교 의료신소재학과)
  • Received : 2023.03.21
  • Accepted : 2023.07.03
  • Published : 2023.08.01
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Abstract

In this study, silver nanoparticles were synthesized by reducing silver nitrate with PVA, and the solution prepared by adding carboxymethyl cellulose (CMC) to the silver nanoparticles was coated on a PET substrate to prepare a coating film with antibacterial and antifogging function. When the coating films were in contact with water vapor at 80 ℃, the uncoated PET substrate was blurred due to the scattering of light due to the occurrence of fog, while the coating film coated with silver nanosol with CMC remained transparent despite contact with water vapor, showing excellent antifogging function. In addition, the antibacterial properties of the coating films were measured by film adhesion method for Staphylococcus aureus, gram-positive bacteria, and Escherichia coli, gram-negative bacteria. The uncoated PET substrate showed a large number of colonies of Staphylococcus aureus and Escherichia coli, while the coating film coated with the silver nanosol greatly inhibited the growth of Staphylococcus aureus and Escherichia coli, resulting in excellent antibacterial effect.

본 연구에서는 질산은을 PVA로 환원시켜 은 나노입자를 합성하였으며, 얻어진 은 나노입자에 Carboxymethyl cellulose (CMC)를 첨가시켜 제조된 용액을 PET 기재 위에 코팅함에 의해 항균 특성과 김서림 방지 기능을 갖는 코팅 도막을 제조하였다. 코팅 도막을 80 ℃의 수증기와 접촉 시 코팅되지 않은 PET 기재는 김서림 발생으로 인한 빛의 산란이 발생해 흐려진 결과를 보인 반면에 CMC가 첨가된 은 나노졸로 코팅된 도막은 수증기와의 접촉에도 불구하고 투명한 상태를 유지하여 김서림 방지 기능이 우수하였다. 또한 코팅 도막의 항균성을 그램 양성균인 포도상구균과 그람 음성균인 대장균에 대해 필름 밀착법으로 측정하였다. 코팅되지 않은 PET 기재에서는 많은 포도상구균과 대장균의 집락이 관찰된 반면에 은 나노졸로 코팅된 도막은 포도상구균과 대장균의 성장이 크게 억제되어 항균 효과가 우수하였다.

Keywords

Acknowledgement

이 논문은 2023년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 바이오융복합기술 전문인력 양성사업의 지원을 받아 수행된 연구임(No. P0017805).

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