Nanostructured Coatings with Advanced Antimicrobial Properties

摘要: Antimicrobial surface coatings are important for the prevention of bacteria growth, having extensive applications in areas such as food packaging and medical applications. In this study ionomer Nafion (N) was used, conjunction with synthetic polymer (QPDMAEA-PLMA Diblock (M) Polyvinylpyrrodidone (P)) naturally occurring biocides (Lysozyme (L) Chitosan (C)), to synthesise antimicrobial coatings. This achieved through a layer-by-layer assembly method, using Quartz Crystal Microbalance Dissipation Monitoring (QCM-D). (negatively charged) deposited alternating layers positively charged materials, allowed electrostatic bonds form between each layers, allowing durable stable coating. Electrostatic forces hydrogen bonding were observed FT-IR analysis showing interactions positive negatively layers. The tested effectiveness, all properties (N/L/N/C)x2 (N/Lx6) more than 99.9% reduction bacteria. Atomic Force Microscopy (AFM) used analyse (N/L/N/C)x2, (N/L)x6 (N/C)x6, these showed high levels roughness. Contact Angle measurements hydrophobicity. Coatings (N/L)x6, (N/P)x3, (N/P/N/L)x1 wettability values 75⁰-45⁰. UV-Vis spectroscopy test transparency (N/C)x6 transparency.