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将Ag Cl晶体和聚四氟乙烯(PTFE)粉末(质量比1∶1)混合物作为靶材,分别在石英玻璃、单晶硅片、聚甲基丙烯酸甲酯有机玻璃(PMMA)和镀铝聚酯膜基底上,通过低功率电子束蒸发法沉积一定厚度的含Ag/聚合物复合薄膜。采用傅里叶变换红外光谱仪(FT-IR)、X线光电子能谱仪(XPS)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和原子力显微镜(AFM)分析薄膜成分、结构和表面形貌,运用接触角测试仪评估薄膜表面的疏水性,采用琼脂扩散法测试其抗菌性能。结果表明:复合薄膜厚度约为490 nm,表面存在明显的两相结构,即以CC、C—C、C—CFn、C—F、—CF2基团形成的聚合物基膜里分散着纳米Ag和Ag Cl颗粒;石英和硅片基底上复合薄膜的接触角分别为108.41°和104.38°,表现为疏水性,对标准菌株金色葡萄球菌和大肠杆菌都具有明显的抗菌效果,其中对金色葡萄球菌的抗菌能力比大肠杆菌更显著。
A mixture of AgCl crystal and polytetrafluoroethylene (PTFE) powder (mass ratio of 1: 1) was used as a target material in quartz glass, monocrystalline silicon wafer, polymethylmethacrylate (PMMA) Ester film substrate, a certain thickness of the Ag / polymer-containing composite film was deposited by a low-power electron beam evaporation method. The films were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM) Surface morphology, the use of contact angle tester to assess the hydrophobic membrane surface, the use of agar diffusion method to test its antibacterial properties. The results show that the thickness of the composite film is about 490 nm, and the surface of the composite film has obvious two-phase structure, that is, the polymer base film formed by CC, C-C, C-CFn, C-F and -CF2 groups disperses Nano-Ag and AgCl particles. The contact angles of composite thin films on quartz and silicon substrates were 108.41 ° and 104.38 °, respectively, showing hydrophobicity. They showed obvious antibacterial activity against the standard strains Staphylococcus aureus and Escherichia coli, Staphylococcus aureus antibacterial ability is more significant than E. coli.