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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 謝國煌(Kuo-Huang Hsieh) | |
dc.contributor.author | Yi-An Chen | en |
dc.contributor.author | 陳奕安 | zh_TW |
dc.date.accessioned | 2021-06-07T23:42:26Z | - |
dc.date.copyright | 2014-07-29 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-07-25 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/16629 | - |
dc.description.abstract | 本研究主要是使用雙官能基異氰酸酯(Diisocyanate)和不同種類之二元或多元醇(Polyol)及鏈延長劑(chain-extender)進行聚縮合(Polycondesation)反應,製備出多種形狀、不同結構的聚胺酯(polyurethane),並將製備好的聚胺酯依適合溶劑製成穩定分散劑,探討其結構與無機材料結構之間的交互作用力,使團聚的無機材料可以均勻分散。
分散劑的製備主要分成兩個部分,第一部分是製備星狀、梳狀的聚乳酸聚胺酯(PLA-PU)分散劑,因為市面不易直接取得聚乳酸,因此我使用直接聚合法,將乳酸小分子與乙二醇小分子脫水聚合成聚乳酸二醇。接著,就製備以1,1,1-三羥甲基丙烷(Trimethylolpropane, TMP)作為中心的星狀分散劑,及以木醣醇(Xylitol)作為中心的梳狀分散劑,其兩者分支皆接異佛爾酮二異氰酸酯(Isophorone diisocyanate, IPDI),最外層再接上不同比例的聚乳酸二醇(PLA diol)和不同比例的聚乙二醇(Poly Ethylene Glycol, PEG)及聚丙二醇(Poly Properlene Glycol, PPG)。所製作出的聚胺酯分散劑,可以用於分散顆粒狀材料,如二氧化鈦(TiO2)及二氧化矽(SiO2)。為了檢測其效果,在這篇論文中做了穿透電子顯微鏡(Transmission Electron Microscope, TEM)、粒徑分析(Dynamic Light Scattring, DLS)等測試,證明顆粒狀材料均勻分散在溶液中。此聚胺酯分散劑可以應用在噴劑、染料及油墨,使產品在長時間的靜置後使用也能均勻確實發揮效果。 而第二部分是由不同比例的聚乙二醇、聚丙二醇,再接上異佛爾酮二異氰酸酯及鏈延長劑等,進行乳化反應、鏈延長反應做成直長鏈的高分子水性聚胺酯分散劑。水性聚胺酯分散劑可以有效使多種片狀、無機材料從緊密堆疊的多層結構分層,如石墨可分層成多片的石墨烯,為了檢測其效果,在這篇論文中做了穿透電子顯微鏡、X-光繞射分析圖譜(X-ray Diffraction, XRD)、穿透度(Transmittance)、導電度(Electric Conductivity)等測試,證明材料在溶液中均勻分層。使用此直長鏈的水性聚胺酯分散劑,可以使得無機材料的熱性質(Thermal property)、導電性質(Electric properties)、透明度(Transparency)等特性更佳,可以應用在顏料、導電材料、潤滑劑等工業原料。 | zh_TW |
dc.description.abstract | Different kinds and constructions of polyurethanes are synthesized with different diisocyanates, polyols and chain-extenders by polycondensation in this research. And then, synthesized polyurethanes are made to stable dispersants according to suitable solvents. After all dispersants are synthesized, we discussed their characterizations, and interforces with several gathered inorganic materials which can be dispersed well in indicate dispersants.
Synthesis and application of dispersants are mainly divided into two parts. The first part is about synthesization of star shape and comb shape Polylactic Acid Polyurethane(PLA-PU) dispersants. Since buying PLA on the market is not easy, we use direct synthesization in this research. PLA polyol are synthesized with Lactic acid and ethylene glycol by dehydration and polymerization. After PLA polyol are synthesized, star shape dispersants are centered with Trimethylolpropane and comb shape dispersants are centered with Xylitol, and both are synthesized with Isophorone diisocyanate(IPDI) and finally with different proportions of PLA polyol, Poly Ethylene Glycol(PEG) and Poly Properlene Glycol(PPG) in the branches. Grain-shape materials like TiO2 and SiO2 are well-dispersed in these PLA-PU dispersants. In order to check the effects in dispersants, the samples are examined by Transmission Electron Microscope(TEM), Dynamic Light Scattring(DLS) and several instruments in this research, which proved that Grain-shape materials are well-dispersed in PLA-PU dispersants. For applications, these PLA-PU dispersants can be added in spray, dye and ink etc. for its excellent and exact dispersion effects even if the solutions stand for a long time. The second part is about synthesization of waterborne polyurethanes(WPU) dispersants with IPDI, different proportions of PEG, PPG, and finally chain-extenders by emulsification and polymerization. Layer inorganic materials are dispersed in these WPU dispersants, like graphite can be dispersed to several slices of graphene. In order to check the effects in dispersants, the samples are examined by TEM, X-ray Diffraction(XRD), UV/VIS Spectrophotometer and several instruments in this research, which proved that layer inorganic materials are well-dispersed in these WPU dispersants. For applications, these WPU dispersants can be added in pigments, electronic materials, lubricants and several industrial materials for dispersants can promote inorganic materials’ thermal property, conductivity, transparency and many properties. | en |
dc.description.provenance | Made available in DSpace on 2021-06-07T23:42:26Z (GMT). No. of bitstreams: 1 ntu-103-R01549005-1.pdf: 2587833 bytes, checksum: e8e45a107f52b73509fec8b45e6d3fab (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 致謝 I
中文摘要 III Abstract V 目錄 VII 圖目錄 X 表目錄 XIII 第一章 緒論 1 1.1. 前言 1 1.2. 研究目的 2 第二章 文獻回顧 3 2.1. 聚胺酯 3 2.1.1. 聚胺酯之簡介 (Polyurethane, PU) 3 2.1.2. 水性聚胺酯 (Waterborne Polyurethane, WPU) 7 2.1.3. 水性聚胺酯之製備方法 11 2.2. 聚乳酸 15 2.2.1. 聚乳酸簡介與發展背景 15 2.2.2. 聚乳酸的合成 17 2.2.3. 聚乳酸應用[30] 19 2.3. 分散劑 20 2.3.1. 分散劑簡介 20 2.3.2. 分散劑機制與原理[40-43] 23 2.3.3. 聚乳酸聚胺酯 - 星狀及梳狀型分散劑 27 2.4. 常用分散材料簡介 28 2.4.1. 片狀材料 - 石墨(Graphite) [53-55] 28 2.4.2. 片狀材料 - 黏土(Clay) [61-62] 35 2.4.3. 顆粒狀材料 - 二氧化矽(SiO2) [63-64] 41 2.4.4. 顆粒狀材料 - 二氧化鈦(TiO2) [65] 45 第三章 實驗方法 50 3.1. 實驗藥品 50 3.2. 實驗儀器 54 3.3. 實驗步驟 57 3.3.1. 聚乳酸二元醇(PLA-polyol)合成 57 3.3.2. 合成梳狀PLA-Polyurethane分散劑 59 3.3.3. 合成星狀PLA-Polyurethane分散劑 61 3.3.4. 直鏈Waterborne Polyurethane製作過程 63 3.4. 材料性質測試 66 3.4.1. 動態光散射雷射(Dynamic Light Scattring, DLS)粒徑儀測試 66 3.4.2. 表面輪廓計(Alpha-Step IQ)測試 66 3.4.3. 凝膠層析儀(Gel Permeation Chromatography, GPC)測試 66 3.4.4. 穿透式電子顯微鏡(Transmission Electron Microscope, TEM) 67 3.4.5. X光繞射儀(X-ray Diffrectometer, XRD) 67 3.4.6. 紫外光/可見光光譜儀(UV/VIS Spectrophotometer) 67 第四章 結果與討論 68 4.1. 聚乳酸二元醇(PLA - polyol)製備結果 68 4.2. 梳狀和星狀分散劑分散顆粒材料 70 4.2.1. 分子量測試分析 70 4.2.2. 穿透式電子顯微鏡(TEM)圖譜測試分析 72 4.2.3. 粒徑大小測試分析 76 4.3. 直鏈Waterborne Polyurethane分散劑分散石墨 78 4.3.1. 分散性質測試分析 79 4.3.2. 穿透式電子顯微鏡(TEM)測試分析 81 4.3.3. X光繞射(X-ray diffraction, XRD)測試分析 85 4.3.4. 石墨材料穿透度測試分析 88 4.3.5. 石墨材料導電度測試分析 90 4.4. 直鏈Waterborne Polyurethane分散劑分散蒙托土 91 4.4.1. 分散性質測試分析 91 4.4.2. 穿透式電子顯微鏡(TEM)測試分析 93 4.4.3. X光繞射(X-ray diffraction, XRD)測試分析 95 第五章 結論 97 參考文獻 99 | |
dc.language.iso | zh-TW | |
dc.title | 聚乳酸與水性聚胺酯之合成與性質探討及其應用於無機材料分散性質之研究 | zh_TW |
dc.title | Synthesis and Characterization of Polylactic Acid(PLA) and Waterborne Polyurethanes and Application on Inorganic Materials Dispersion Properties | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 林江珍(Jiang-Jen Lin),陳思賢(Szu-Hsien Chen) | |
dc.subject.keyword | 水性聚胺酯,聚乳酸,分散劑,石墨, | zh_TW |
dc.subject.keyword | waterborne polyurethane,Dispersants,polylactic acid,graphite, | en |
dc.relation.page | 105 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2014-07-25 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
顯示於系所單位: | 高分子科學與工程學研究所 |
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