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Student Number 963204054
Author Yun-wen You(尤韻雯)
Author's Email Address 963204054@cc.ncu.edu.tw
Statistics This thesis had been viewed 1476 times. Download 1194 times.
Department Chemical and Materials Engineering
Year 2008
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Preparation and characterization of Fe3O4 nanowire–polyaniline composites and Ag nanowire-polyaniline composites
Date of Defense 2009-07-07
Page Count 108
Keyword
  • Ag
  • Fe3O4
  • nanowire
  • polyaniline
  • Abstract In this thesis, we study two research topics: one is the composite of Fe3O4 nanowire and polyaniline, the other is the composite of silver nanowire and polyaniline. In the first part, the Fe3O4 nanowires (diameter: 50nm, aspect ratio: 150) were previously dispersed in the polyethylene glycols (PEG) solution obtained from Industrial Technology Research Institute. Fe3O4-polyaniline was prepared by polymerization of aniline in the presence of Fe3O4 nanowires, dodecylbenzenesulfonic acid (DBSA) and ammonium persulfate (APS). We varied the relative amount of Fe3O4 nanowires to aniline monomer. The morphology of core-shell structure was observed by SEM and TEM. FTIR spectra show functional groups of polyaniline synthesized. TGA was used to measure the content of Fe3O4 nanowires. Vibrating sample magnetometer (VSM) was used to measure the magnetic properties. Four-Point Probe method was used to measure the conductivity. The prepared composites show both properties of conductivity and magnetism. The thermal stability of the polymer can be enhanced by forming the composites.
    In the second part, the Ag nanowires were previously dispersed in polyvinylpyrrolidone solution obtained from Industrial Technology Research Institute. Ag nanowires -polyaniline was prepared by five different methods. Four methods were prepared in aqueous solution, and one of the methods was prepared in chloroform solution. We use thioglycolic acid to modify the surface of Ag nanowire, and then polymerization of aniline occurs near the surface of Ag nanowires. The morphology of core-shell structure was observed by SEM and TEM. FTIR spectra show functional groups of polyaniline synthesized. TGA was used to measure the content of Ag nanowires. Semiconductor parameter analyzer was used to measure the conductivity. The composites prepared by using thioglycolic acid as dopant, and ammonium persulfate (APS) as the oxidant were the best.
    Table of Content 目錄
    中文摘要I
    英文摘要VI
    表目錄XI
    圖目錄XII
    第一章 緒論1
    第二章 文獻回顧3
    2.1 導電高分子3
    2.1.1 導電高分子簡介3
    2.1.2 聚苯胺5
    2.1.2.1 簡介5
    2.1.2.2 聚苯胺的合成方式8
    2.1.2.3 聚苯胺紅外光光譜分析11
    2.1.2.4 聚苯胺的應用13
    2.1.2.5 遮蔽電磁波簡介16
    2.2 磁性物質-氧化鐵17
    2.2.1 磁性的種類17
    2.2.2 磁性與粒徑之關係21
    2.2.3 氧化鐵的種類22
    2.2.4 四氧化三鐵 (Fe3O4)23
    2.3 金屬-銀26
    2.3.1 銀的簡介26
    2.3.2 奈米銀26
    2.3.3 奈米銀的應用28
    2.4 金屬奈米線32
    2.5 有機/無機複合材料34
    2.6 研究動機與目的36
    第三章 實驗部份37
    3.1 實驗37
    3.1.1 藥品37
    3.2 實驗儀器38
    3.3 實驗步驟40
    3.3.1 四氧化三鐵線/聚苯胺40
    3.3.1.1 苯胺單體純化40
    3.3.1.2 四氧化三鐵線/聚苯胺的製備41
    3.3.2 銀線/聚苯胺42
    3.4 實驗分析45
    3.4.1 穿透式電子顯微鏡(Transmission Electron Microscope,TEM)45
    3.4.2 場發射掃瞄式電子顯微鏡(Field-Emission Scanning Electron45
    Microscope,FE-SEM)45
    3.4.3 霍式轉換紅外光譜儀(Fourier Transform-Infrared45
    Spectrophotometer,FT-IR)45
    3.4.4 熱重分析儀(Thermogravimetric Analyzsis, TGA)46
    3.4.5 四點探針導電度測試(Four-Point Conductive Meter)46
    3.4.6 震動樣品磁度儀 (Vibrating Sample Magnetometer,VSM)47
    3.4.7 X射線光電子光譜儀(X-ray Photoelectron Spectroscopy, XPS)48
    3.4.8 半導體參數分析儀( I- V )49
    第四章 結果與討論50
    4.1 四氧化三鐵線/聚苯胺複合材料50
    4.1.1形貌分析 (SEM、TEM)50
    4.1.2能量散射光譜分析儀(EDS)之分析(TEM)58
    4.1.3霍式轉換紅外光譜儀之分析(FT-IR)61
    4.1.4熱重分析儀之熱穩定性分析(TGA)63
    4.1.5 震動樣品磁度儀(VSM)之飽和磁化率測量65
    4.1.6 四點探針之導電率測量66
    4.2 銀線/聚苯胺68
    4.2.1 形貌分析 (SEM、TEM)68
    4.2.2.1 能量散射光譜分析儀(EDS)之分析(TEM)73
    4.2.2.2 探討乙硫醇酸之反應機制76
    4.2.3霍式轉換紅外光譜儀之分析(FT-IR)78
    4.2.4 熱重分析儀之熱穩定性分析(TGA)80
    4.2.6 半導體參數分析儀之導電率測量82
    第五章 結論84
    5.1 四氧化三鐵線/聚苯胺複合材料之合成及分析84
    5.2 銀線/聚苯胺複合材料之合成及分析85
    參考文獻86
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    Advisor
  • Sze-ming Yang(楊思明)
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    Date of Submission 2009-07-20

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