巨大基團對Polyurethane urea結構與性質的影響

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姓名

廖家陽(Chia-yang Liao) 查詢紙本館藏

畢業系所

化學工程與材料工程學系

論文名稱

巨大基團對Polyurethane urea結構與性質的影響
(The Influences of bulky group on the structures and properties of PUU)

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摘要(中)

嵌段式聚氨基甲酸酯(Segmented polyurethane，PU)擁有龐大的化學結構數目與其內部特殊的微相形態，故反應出許多多變的性質，同時也複雜化了PU形態、結構和性質的關係。為此我們希望能藉由合成完全相分離的PU彈性體，來探討此微域形態與其形態變化的交互關係。
本實驗室過去曾探討水性PU(Waterborne Polyurethane)，在其結構變化與物理性質之間的關係上有重大發現，並利用穿透式電子顯微鏡由微相結構方面著手建立水性PU三個model，此水性PU特有之雙連續相網狀結構(phase separated bicontinues network structure) ，具高透明性、高拉伸剛性、高堅韌性、耐高溫，且易於加工，本實驗將以此架構續將此高分子改質成不具水溶性，依據溶液聚合法，將硬質段改質，並維持其材料特性，期望能將此高分子帶入實用之領域。
本實驗乃是利用3-二異丙氨-1,2丙二醇
(3-Diisopropylamino-1,2-propanediol)取代水性PU之DMPA，即從硬段改質油性PU，添加3-二異丙氨-1,2丙二醇形成巨大側基(Bulky group)，藉由TEM、FTIR、DSC、DMA、TGA、拉力機，探討其結
與性質。

摘要(英)

Segmented polyurethane possesses enormous amount of chemical structures and its Micro-phase structure could react to form a variety of properties, hence it complicates its own as well. In order to probe into the mutual actions between its properties and compositions, we synthesize the nonpolar PU elastomer into a complete whole.
Our laboratory once looked into Waterborne Polyurethane’s structural variations and physical properties and had came out with a significant discovery. With the usage of TEM(transmission electron microscope) we built up three Waterborne Polyurethane models in micro-phase-oriented aspect, its phase separated bicontinues network structure possesses the penetrability, elasticity, tenacity, being heat-proof and facile process. The experiment is to transform Waterborne Polyurethane into fat-soluble. By taking the measure of solution polymerization, that is altering the structure of hard segment , yet maintaining its material distinction. I do expect to bring it into application in the coming future.
We utilized 3-Diisopropylamino-1,2-propanediol as substitutes for the DMPA of Waterborne Polyurethane. That is adding 3-Diisopropylamino-1,2-propanediol so as to form a bulky group, to change its structure through hard segment. Afterward we study its structures and properties with TEM, FTIR, DSC, DMA,TGA and Tensile strength.

關鍵字(中)

★ 雙連續相分離網狀結構
★ 水性PU
★ 嵌段式聚氨基甲酸酯

關鍵字(英)

★ phase separated bicontinues network structure
★ Waterborne Polyurethane
★ Segmented polyurethane

論文目次

摘要 ------------I
英文摘要----------II
致謝 ----------III
目錄 -----------IV
圖目錄 -----------VI
表目錄 ----------X
第一章緒論 ----1
第二章文獻回顧-4
2-1 PU硬質段的結構組成 -------------4
2-2 PU的形態與結構 ------------ 6
2-3水性PU的形態與結構 ----------------9
第三章實驗部份 ---------------15
3-1 化學藥品 ------------------------15
3-2 儀器設備 ------------------------16
3-3 實驗流程 ------------------------17
3-3-1 反應物 -----------------------17
3-3-2 合成步驟 -------------- 17
3-3-3 實驗樣品命名 -------------------18
3-3-4 PU試片製備 --------------18
3-3-5 FTIR測試 ----------------18
3-3-6 DSC熱性質分析-------------------19
3-3-7熱重損失分析 -------------------19
3-3-8動態機械分析 --------------------19
3-3-9抗張強度測試 -------------------19
3-3-10 Transmission Electron Microscope分析---20
第四章結果與討論 -----------------------------23
4-1成膜結果 --------------------------------23
4-2 FTIR分析 --------------------------------24
4-3 PUU之熱裂解 ------------------------------29
4-4 DSC熱分析 -------------------------------35
4-5 動態機械性質------------------------------39
4-6穿透式電子顯微鏡(TEM)對PU形態分析----------43
4-7 機械性質 ---------------------------------81
第五章改質成果與檢討-----------------------------------------------------82
參考文獻　-------------------------------------------------------------------- 89

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指導教授

陳登科(Teng-ko Chen)

審核日期

2007-7-20

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