摘要本文以石英片、氯化钠片、单晶硅片、涂碳铜网为基底,以醋酸铜-聚乙烯混合粉末为靶材,采用真空状态下低能粒子流沉积薄膜然后进行退火热处理的方法。研究醋酸铜-聚乙烯薄膜中纳米粒子的形成机理发现,退火过程中产物的结构变化以及退火温度对铜纳米粒子和基体的形状和相态有很大的影响。结果表明,在退火醋酸铜-聚乙烯薄膜时,铜纳米粒子的形成应该发生在铜盐的热分解过程。聚乙烯的热分解产物能够使金属粒子稳定化,阻止金属在与氧气的接触中被氧化。该复合薄膜对大肠杆菌ATCC 25922显示出较高的抗菌活性。73660
毕业论文关键词 电子束沉积,铜纳米粒子,醋酸铜-聚乙烯复合薄膜,大肠杆菌ATCC25922
毕业设计说明书外文摘要
Title Structure and composition analysis of Cu/PE composite thin Films prepared by vacuum electron beam evaporation
Abstract In this paper,the substrates were quartz plates,NaCl plates,silicon single crystal plates,carbon-coated copper grids,the target were mixed powder with copper acetate-polyethylene,comprises the annealing of the thin film deposited in a vacuum using low-energy electron flux。The study of the formation mechanism of nanoparticles in two-layer thin-film copper acetate-polyethylene systemsfound,the effect of the medium composition and the annealing temperature on the structural and phase state of the copper nanoparticles and the matrix is determined。Seen from the results,When annealing copper acetate-polyethylene film,the formation of copper nanoparticles should occur in the process of copper salt thermal destruction。The products of thermal destruction of the polyethylene component are capable to stabilize the metal particles formed and protect them from oxidation at the interaction with atmospheric oxygen。The high antibacterial activity against Escherichia coli ATCC 25922 is shown。
Keywords Electron-beam deposition, Copper nanoparticles, Copper acetate- polyethylene system, Escherichia coli ATCC 25922
目 次
1 绪论 1
1。1 铜材料 1
1。2 铜纳米材料 1
1。3 聚乙烯 1
1。4 复合材料 1
1。4。1 金属/聚合物复合材料的制备方法及应用 2
1。4。2 金属/聚合物复合薄膜的制备方法及应用 2
1。5 纳米复合薄膜及其制备方法 2
1。5。1 纳米薄膜 2
1。5。2 真空蒸发法 3
1。5。3 溅射沉积法 3
1。5。4 分子与原子束外延技术 3
1。5。5 分子自组装技术 3
1。5。6 溶胶-凝胶法 4
1。5。7 L-B膜技术 4
1。5。8 电化学沉积 4
1。5。9 化学气相沉积法 4
1。6 电子束沉积法 4
1。7 抗菌薄膜与金属纳米的抗菌性 5
1。8 本实验的研究目的 5
1。9 本实验的研究内容