| Antimicrobial materials,such as copper and silver,are widely used in life,which have high antimicrobial properties and have become the hotspot of contemporary research.At the same time,hydrophobic materials with anti-fouling and self-cleaning are the trend that people are pursuing.Therefore,composite films with hydrophobic and antibacterial properties were prepared by electron beam deposition(EBD)method,which was based on hydrophobicity of polymer and antibacterial property of nano-silver and nano-copper.The main results and conculusions in this theis were summaried as follows:The copper-doped polymer composite thin films were deposited by low power electron beam evaporation(EBD).The raw materials are monocrystalline silicon,quartz,sodium chloride,copper acetate powder and polyethylene powder respectively.The two-phase structure of the copper nanoparticles was uniformly distributed in the polymer-based film under the nitrogen atmosphere in the range of 300-500?,and the samples were heat-treated by tube furnace.XPS,FTIR,UV-vis,TEM and SEM were operated to analyze the phase microstructure,element content and surface morphology,respectively.The composite film has certain hydrophobic property and obvious antibacterial effect on Escherichia coli.Using the silver nitrate powder as the silver source,using EBD method,taking the polymethyl methacrylate,polyethylene and polylactic acid as the polymer matrix material,using the same preparation process parameters as above,preparing silver doped different polymer base composite film.The two-phase structure of silver nanoparticles in different polymer base films was obtained by heat treatment of the initial film samples in the range of 75-225 ? in a nitrogen atmosphere.The composition and structure of the film were investigated by UV-vis,FTIR,XPS.The mechanism of film formation by electron beam evaporation method was studied. |
PDF Full Text Request