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  • 學位論文

以田口方法電泳沉積氧化石墨烯進行表面分析

Surface analysis of electrophoretic deposition graphene oxide using Taguchi method

指導教授 : 何青原

摘要


本實驗研究採用田口方法(Taguchi Methods),以Hummers法合成粉狀氧化石墨烯,並以電泳沉積方式將氧化石墨烯沉積於氧化銦錫(ITO)基板上,進行表面分析並觀察表面型態找出電泳沉積之最佳條件。 在田口L9(34)直交表參數中,改變電壓、陰極陽極距離、溫度、重量百分濃度等參數電泳沉積氧化石墨烯。由掃描式電子顯微鏡可觀察出氧化石墨烯沉積的心狀皺褶樣貌差異性,也可觀察石墨堆疊特性現象;能量散佈分析儀器結果可看出氧化石墨烯的分布大宗為碳元素與氧元素,且比例接近1:1,氧化效果良好。此外,實驗結果發現在接觸角量測方面,S/N比反應因子的最大控制因子為溫度,次要為濃度。在參數條件為電壓7V,陰極陽極距離14 mm,溫度55℃,濃度1.5%時,得到最小角度為28度;原子力顯微鏡測量結果,在參數條件為電壓7V,陰極陽極距離14mm,溫度55℃,濃度1.5%時,得到均方根粗糙度Rq為30.1nm與中心線平均粗糙度Ra為19.6nm,粗糙度較為平緩,S/N比反應因子的最大控制因子與接觸角量測所得結果相同都是溫度為最大控制因子。 本實驗透過接觸角量測與原子力顯微鏡的結果,經由S/N比計算能得到溫度為最大控制因子,且找出最佳條件參數電壓為5V,陰極陽極距離18mm,溫度40℃,重量百分濃度1%。藉由此次表面結構與性質實驗分析,能提升未來研究生醫技術、防腐抗蝕、電極效益、高分子複合材料、塗料運用。

並列摘要


In this study, Taguchi Methods were used to synthesize powdered graphene oxide by Hummers method. The graphene oxide was deposited on indium tin oxide (ITO) substrate by electrophoretic deposition, and the surface morphology was observed and found electrophoretic deposition of the best conditions. In Taguchi's L9(34) orthogonal arrays parameters, graphene oxide was electrophoretically deposited by changing parameters such as voltage and anode distance, temperature and weight percent concentration. Graphene oxide deposited heart-shaped pleated appearance differences can be observed by scanning electron microscope , and also observed the phenomenon of graphite stacking characteristics; Energy dispersion spectrometer instrument results show that carbon and oxygen elements in graphene oxide are majority, and the ratio close to 1: 1, means that the oxidation effect is good. In addition, the experimental results show that in the contact angle measurement, the maximum control factor of the S/N ratio reaction factor is the temperature. Secondary is concentration .Under the conditions of the parameters of the voltage of 7V, cathode anode distance 14 mm, temperature 55℃and concentration 1.5% , a minimum angle of 28 degrees was obtained. Atomic force microscope measurement results showed that the root mean square roughness Rq was 30.1nm and the center line average roughness Ra was 19.6nm under conditions of voltage of 7V, adistance of 14mm of cathode and anode, temperature of 55℃and concentration of 1.5% . The roughness is relatively smooth. S/N ratio of the maximum reaction factor control factor and contact angle measurement results are the same temperature is the maximum control factor. In this experiment, through the contact angle measurement and atomic force microscope results, the temperature can be obtained as the maximum control factor through the S/N ratio calculation, and the optimal parameters were found to be 5V, cathode anode distance 18mm, temperature 40℃, concentration 1% . By the surface structure and nature of the experimental analysis, to enhance the future of postgraduate medical technology, corrosion resistance, electrode efficiency, polymer composite materials, paint use.

參考文獻


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