Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/9889
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dc.contributor.advisor呂福興zh_TW
dc.contributor.advisorF.-H. Luen_US
dc.contributor.author劉厥揚zh_TW
dc.contributor.authorLiu, Cheng-Yangen_US
dc.date2004zh_TW
dc.date.accessioned2014-06-06T06:43:53Z-
dc.date.available2014-06-06T06:43:53Z-
dc.identifier.urihttp://hdl.handle.net/11455/9889-
dc.description.abstractThe nano-structured TiO2 films have been prepared on the flexible substrate by anodic oxidation using potentiodynamic and potentiostatic modes. The electrolyte is sulfuric acid. In potentiodynamic mode, the sweep rate at 3 mV s-1 14 mV s-1 and 28 mV s-1 have been synthesized anatase phase TiO2 films and particle size between 5 and 25 nm appeared above 10 V. In potentiostatic mode, There have been synthesized porous TiO2 films while potential above 20 V and time above 30 min. In Raman spectra, the lowest frequency shifted slightly toward low frequency as the particles size increasing and it have been high frequency relativity to bulk, the result called blue shift. The nano-structured TiO2 films could be synthesized over the range of 7.5 to 17.5 V in potentiodynamic mode, while the films formed higher than 10 V in potentiostatic mode. Moreover, the oxygen plasma with various input power employs as the treatment of the PET substrate. The surface roughness increased with plasma power. Meanwhile, the surface has been increased some chemical hydrophilic group. The water vapor transmission rate (WVTR) value decreased from 5.60.4 to 3.0 g/m2-day, which decline to about 50% after the film treated by anodic oxidation and oxygen plasma at 50 W.en_US
dc.description.abstract使用陽極氧化法中的定電壓與掃描電壓模式於可撓性基材上製備奈米二氧化鈦薄膜,所使用的電解液為硫酸 (H2SO4)。並以場發射掃描式電子顯微鏡(FE-SEM)分析表面微結構,拉曼光譜儀(Micro-Raman)分析其晶體結構。由FE-SEM及拉曼光譜分析得知,在掃描電壓模式下,不論掃描速率為3 mV s-1、14 mV s-1及28 mV s-1,當電壓為10 V至30 V時會有奈米顆粒狀的銳鈦礦(anatase)二氧化鈦薄膜出現,其顆粒尺寸約為5~25奈米。定電壓模式陽極氧化時,當電壓大於20 V以上及時間固定為30分時,氧化膜則大幅地改變為孔洞狀結構。另外,銳鈦礦結晶相二氧化鈦的拉曼最低頻能峰相對於塊材而言均屬高頻,此為藍位移現象且最低頻能峰則會隨顆粒變大而逐漸地朝低頻方向偏移。由綜合上述結果所整理之動力學相圖得知,在掃描電壓模式下製備奈米二氧化鈦薄膜的最佳範圍為7.5~17.5 V,不過在定電壓模式下則為10 V以上。 PET基材經電漿處理後,粗糙度會伴隨功率的提高而變的較粗糙且會有極性的官能基增加導致親水性上升。另外經50 W氧電漿處理後,TiO2薄膜之水氣穿透率由原先的5.6±0.4 g/m2-day降低47%而成為3.0 g/m2-day。zh_TW
dc.description.tableofcontents摘要 Abstract 第一章 緒論…………………………………………….…………....1 1.1 前言……………………………………………………………..1 1.2 研究動機………………………………………………………..2 1.3 研究目的………………………………………………………..4 第二章 文獻回顧……………………………………….……….....6 2.1 陽極氧化法製備氧化膜之文獻回顧…………………………..6 2.2 可撓性基材上鍍膜及氣體阻隔層之文獻回顧………………10 2.3 理論背景………………………………………………………13 第三章 研究方法……………………………………………...17 3.1 電解槽示意圖…………………………………………………17 3.2 實驗流程圖………….…………...………………………....……18 3.3 試片處理及電解液配置……………………………………...18 3.3.1 試片前處理……………………………………………...18 3.3.2 電解液配置……………………………………………...19 3.4 陽極氧化模式………………………………………………..19 3.5 陽極氧化膜分析……………………………………………..20 3.5.1 光學顯微鏡及立體顯微鏡……………………………..20 3.5.2 場發射掃描式電子顯微鏡……………………………..20 3.5.3 X光繞射儀……………………………………………..20 3.5.4 拉曼光譜儀………………………………………….….21 3.5.5 原子力顯微鏡…………………………………………..21 3.5.6 水氣滲透及氧氣滲透儀………………………………..22 3.5.7 電漿化學輔助氣相沉積………………………………..22 第四章 結果與討論………………………………………….24 4.1 鈦薄膜鍍著後分析……………………………………………24 4.2 陽極氧化時電壓、電流與時間關係……….…………………….25 4.2.1 掃描電壓模式…………………………………………..25 4.2.2 定電壓模式……………………………………………..26 4.3 氧化膜外觀……………………………………………………27 4.4 氧化膜之微結構分析…………………………………………28 4.4.1 掃描電壓模式…………………………………………..28 4.4.2 二氧化鈦薄膜橫截面分析……………………………..31 4.4.3 定電壓模式……………………………………………..32 4.4.4 陽極氧化膜異常分析…………………………………..33 4.5 氧化膜之結晶相分析…………………………………………34 4.5.1 XRD分析……………………………………………….35 4.5.2 Micro-Raman 光譜分析………………………………..35 4.5.3 綜合整理………………………………………………..40 4.6 水氣穿透分析…………………………………………………41 第五章 結論……………………………………………………..45 參考文獻…………………………………………………...………zh_TW
dc.language.isoen_USzh_TW
dc.publisher材料工程學研究所zh_TW
dc.subjectflexibleen_US
dc.subject可撓性zh_TW
dc.subjecttitanium dioxideen_US
dc.subjectanodic oxidationen_US
dc.subject二氧化鈦zh_TW
dc.subject陽極氧化zh_TW
dc.titleSynthesis of nano-structured TiO2 films on flexible substrates by anodic oxidationen_US
dc.title陽極氧化法於可撓性基材製備奈米二氧化鈦之研究zh_TW
dc.typeThesis and Dissertationzh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
Appears in Collections:材料科學與工程學系
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