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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 邱文英(Wen-Yen Chiu) | |
dc.contributor.author | Shih-Chieh Kao | en |
dc.contributor.author | 高士傑 | zh_TW |
dc.date.accessioned | 2021-06-16T17:25:06Z | - |
dc.date.available | 2016-08-20 | |
dc.date.copyright | 2012-08-20 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-08-16 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63978 | - |
dc.description.abstract | 本研究是利用旋轉塗佈及靜電紡絲方法製備奈米碳管/聚(氮-異丙基丙烯醯胺)之複合薄膜與纖維,並分析其形態與性質。藉由此複合材料中奈米碳管的導電性質與聚(氮-異丙基丙烯醯胺)對於溫度的感應性質,成功製備出在高溼度環境下具有溫度感應性質之導電複合材料。
首先利用硫酸與硝酸的混合溶液改質多層奈米碳管,使其表面接上羧基、羥基等基團,增加在水中的分散性,並利用拉曼光譜儀與化學分析影像能譜儀,選定適合的酸化條件。然後將改質後的多層奈米碳管與在室溫下合成之氮-異丙基丙烯醯胺與丙烯酸、氮-羥甲基丙烯醯胺的共聚物進行混摻,利用微分掃瞄熱分析儀量測溶液之體積相轉移溫度,討論分子間作用力對於溫感性質的影響。 接著將混摻溶液以靜電紡絲的方式製作複合奈米纖維,以掃瞄式電子顯微鏡探討靜電紡絲的溶液組成及操作條件對於纖維之形態影響。在穩定的操作條件下所製備出的奈米纖維直徑約為400~500奈米;利用穿透式電子顯微鏡觀察複合奈米纖維中之奈米碳管的分布情形。其結果顯示,多層奈米碳管會分佈在複合奈米纖維之中,並且沿著纖維之軸向排列。此外,藉由氮-羥甲基丙烯醯胺的熱可交聯特性,能夠使複合材料在交聯後的耐水性能與形態產生變化。 最後的部分是複合薄膜及纖維在不同溫溼度環境下的電學性質研究。將複合薄膜及纖維放置在以恆溫恆溼烘箱設定的平衡環境下,經由升溫或降溫過程進行材料表面電阻的動態測試,討論溫度感應性對電阻的影響。 | zh_TW |
dc.description.abstract | In this research, multi-walled carbon nanotube/poly(N-isopropylacrylamide) (poly(NIPAAm)) composite films and fibers were prepared via spin coating and electrospinning, respectively. Because of the thermosensitivity of poly(NIPAAm), the electrical conductivity properties of the composites depend on temperature and humidity.
First, sulfuric acid and nitric acid were used to modify multi-walled carbon nanotube (MWCNT) in order to disperse MWCNT better within the matrix. Dimension Raman system and electron spectroscopy for chemical analysis system (ESCA) were used to analyze modified MWCNT for choosing appropriate reaction condition. The effects of molecular interactions on volume phase transition temperature were discussed by differential scanning calorimeter (DSC). Second, the morphology of electrospun nanofibers with difference polymer concentration and electrospinning parameters were characterized by field-emission scanning electron microscope (SEM). It was found that MWCNTs were embedded in nanofibers and mostly aligned along the fiber axis observed by transmitting electron microscope (TEM). In addition, the thermal crosslinking of N-methylolacrylamide (NMA) segments provided the ability of confining the morphology of nanofibers, which prevented the composite from dissolving in water. Finally, electrical properties of the composite films and fibers were measured at different temperatures and relative humidity. The relationship between surface electrical resistance and temperature in dynamic process was studied. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T17:25:06Z (GMT). No. of bitstreams: 1 ntu-101-R99524065-1.pdf: 4743947 bytes, checksum: 11c7610a01639df76deb33e7c0eaa482 (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 口試委員會審定書 I
致謝 III 摘要 V Abstract VII 目錄 IX 圖目錄 XIII 表目錄 XVII 第一章 緒論 1 1-1 前言 1 1-2 研究目的 1 第二章 文獻回顧 3 2-1 奈米碳管 3 2-1-1 奈米碳管的歷史 3 2-1-2 奈米碳管的結構 4 2-1-3 奈米碳管的特性 7 2-1-4 奈米碳管的改質方法 10 2-1-5 拉曼光譜分析 13 2-2 聚(氮-異丙基丙烯醯胺) 16 2-2-1 環境敏感型高分子材料定義與分類 16 2-2-2 溫度敏感型高分子 16 2-2-3 酸鹼敏感型高分子 19 2-2-4 其他環境敏感型高分子 21 2-3 靜電紡絲技術 21 2-3-1 靜電紡絲原理 21 2-3-2 靜電紡絲裝置 22 2-3-3 靜電紡絲參數 23 2-3-4 高分子/奈米碳管複合奈米纖維 26 第三章 實驗方法 29 3-1 實驗藥品 29 3-2 實驗儀器 31 3-3 實驗步驟 34 3-3-1 實驗流程圖 34 3-3-2 多層奈米碳管的改質 35 3-3-2-1 流程 35 3-3-2-2 分散性測試 36 3-3-3 合成Poly(NIPAAm-co-AA)與Poly(NIPAAm-co-AA-co-NMA) 37 3-3-4 多層奈米碳管/共聚物混合溶液 38 3-3-4-1 以旋轉塗佈法製備複合薄膜 38 3-3-4-2 以靜電紡絲法製備複合奈米纖維 38 3-3-5 性質測定 39 3-3-5-1 多層奈米碳管的拉曼光譜分析 39 3-3-5-2 多層奈米碳管的表面元素分析 40 3-3-5-3 體積相轉移溫度(Volume Phase Transition Temperature, TVPT)測定 40 3-3-5-4 膨潤率量測 40 3-3-5-5 複合材料之表面電阻量測 41 第四章 結果與討論 43 4-1 奈米碳管之改質分析 43 4-2 體積相轉移溫度測定 44 4-2-1 Poly(NIPAAm-co-AA)水膠 45 4-2-1-1 環境酸鹼值的影響 45 4-2-1-2 添加奈米碳管的影響 45 4-2-2 具有熱可交聯性之poly(NIPAAm-co-AA-co-NMA)水膠 46 4-3 奈米纖維形態分析 46 4-3-1 Poly(NIPAAm-co-AA)奈米纖維 46 4-3-1-1 高分子溶液濃度 46 4-3-1-2 電紡絲操作條件 47 4-3-2 MWCNT/Poly(NIPAAm-co-AA)複合奈米纖維 48 4-3-3 具有熱可交聯性poly(NIPAAm-co-AA-co-NMA)複合奈米纖維 49 4-4 膨潤率測試 49 4-5 複合材料之表面電阻 49 4-5-1 複合薄膜 50 4-5-2 複合纖維 51 第五章 結論 71 參考文獻 73 | |
dc.language.iso | zh-TW | |
dc.title | 奈米碳管/聚(氮-異丙基丙烯醯胺)複合薄膜及纖維之製備,性質與形態分析 | zh_TW |
dc.title | Morphological and Property Analyses of Carbon Nanotube/Poly (NIPAAm) Composite Films and Fibers | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 黃延吉(Yan-Jyi Huang),呂幸江(Shing-Jiang Lue),趙基揚(Chi-Yang Chao) | |
dc.subject.keyword | 多層奈米碳管,氮-異丙基丙烯醯胺,靜電紡絲,奈米纖維,溫度敏感, | zh_TW |
dc.subject.keyword | multi-walled carbon nanotubes,N-isopropylacrylamide,electrospinning,nanofiber,stimuli-responsive, | en |
dc.relation.page | 84 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-08-16 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 化學工程學研究所 | zh_TW |
顯示於系所單位: | 化學工程學系 |
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