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研究生： 劉虹伶
Liu, Hung-Ling
論文名稱： Effects of Poly(p-vinylphenol) on Borderline Miscible Blends of Poly(vinyl acetate) and Poly(methyl methacrylate)
Effects of Poly(p-vinylphenol) on Borderline Miscible Blends of Poly(vinyl acetate) and Poly(methyl methacrylate)
指導教授： 吳逸謨
Woo, Ea Mor
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年： 2004
畢業學年度： 92
語文別： 中文
論文頁數： 91
中文關鍵詞： 三成分摻合系統 、相容性
外文關鍵詞： ternary blend, miscibility
相關次數： 點閱：84  下載：10 
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    • 　　本研究利用微分掃描熱卡計(DSC)，偏光顯微鏡(POM)，掃描式電子顯微鏡(SEM)與傅立葉紅外線光譜儀(FTIR)來觀察、鑑定poly(vinyl acetate)/poly(p-vinylphenol)/poly(methyl methacrylate) (PVAc/PVPh/PMMA)三成分摻合系統相容性和分子量對相容性之影響效應。在LPVAc/PVPh/LPMMA系統 (其中LPVAc分子量為12,500g/mol之PVAc及LPMMA分子量為15,000g/mol之PMMA)，發現PVPh能夠維持約相等的氫鍵作用力於LPVAc及LPMMA之間，使三高分子混合物之間保持均等之作用力。此外當提高摻合物PVAc與PMMA之分子量(PVAc分子量由12,800→260,000g/mol與PMMA分子量由15,000→100,000g/mol)後，則此三成分系統之相型態會由完全相容轉變為部分相容，且皆具有下臨界溶液溫度(LCST)的行為。當使用主鏈上具有酯基團的poly(1,4 butylene adipate) (PBA)取代側鏈上含有酯基團的PVAc，而形成PBA/PMMA摻合系統時，其相型態由原先PVAc/PMMA的LCST行為轉變為上臨界溶液溫度(UCST)行為。當加入PVPh而成為PBA/PVPh/PMMA三成分摻合系統時，其相型態也與兩成分系統相同呈現UCST之相行為。

    　　Effect of molecular weight on the miscibility and morphology of poly(vinyl acetate)/poly(p-vinyl phenol)/poly(methyl methacrylate) (PVAc/PVPh/PMMA) ternary blends were investigated by using differential scanning calorimeter (DSC), polarized-optical microscopy (POM), scanning electron microscopy(SEM), and fourier transform infrared spectrometer (FTIR) in this study. In the LPVAc/PVPh/LPMMA (LPVAc Mw=12,500g/mol of PVAc；LPMMA Mw=15,000 g/mol of PMMA) ternary blends, it is observed that PVPh is capable of maintaining roughly equal hydrogen-bonding interactions with either LPVAc or LPMMA in the ternary mixtures to maintain balanced interactions among the ternary mixtures. Therefore, with increasing the molecular weight of PVAc and PMMA(PVAc Mw=12,800→260,000 g/mol and PMMA Mw=15,000→100,000 g/mol), the miscibility in PVAc/PVPh /PMMA is decreased and a partial miscible ternary blends with lower critical solution temperature (LCST) phase behavior is obtained. The phase behavior in poly(1,4 butylene adipate)/poly(methyl methacrylate)(PBA/PMMA )blends is also discussed and is observed to exhibit the upper critical solution temperature (UCST) behavior. This phase behavior is different with the LCST behavior in the other carbonyl group containing polymer blends like, PVAc/PMMA blends. After introducing the PVPh into PBA/PMMA blends, the PBA/PVPh/PMMA ternary system is obtained and displays the similar UCST phase behavior as PBA/PMMA binary blends.

    總目錄 頁數 中文摘要 I 英文摘要 II 致謝 III 總目錄 IV 表目錄 VI 圖目錄 VII 第一章 簡介 1 第二章 原理 4 2-1高分子摻合系統混合熱力學 4 2-2混合物的相分離 6 2-3玻璃相轉移行為 7 2-4物理老化現象 8 2-5作用力參數 8 第三章 實驗 14 3-1實驗所用之高分子及試藥 14 3-2實驗試樣之製備 15 3-2實驗所用之儀器 15 第四章 結果與討論 18 4-1 LPVAc/LPMMA 兩成分摻合體相容性探討 18 4-1-1相型態分析 18 4-1-2熱分析研究 18 4-1-3熱行為及LCST探討 19 4-2 LPVAc/PVPh/LPMMA 三成分摻合體相容性探討 27 4-2-1相型態分析 27 4-2-2熱分析研究 27 4-2-3 LCST行為探討 28 4-2-4分子間作用力 30 4-2-5作用力參數探討 31 4-2-6理論預測三成分摻和系統相圖 32 4-3 PVAc/PVPh/PMMA三成分摻合體相容性及分子量效應之探討 56 4-3-1相型態分析 56 4-3-2熱行為及LCST探討 56 4-3-3熱分析研究 57 4-3-4分子量效應 58 4-4 PBA/PVPh/PMMA 三成分摻合體相容性探討 72 4-4-1相型態分析 72 4-4-2熱分析研究 72 4-4-3 UCST行為探討 73 第五章 結論 85 參考文獻 87 自述 91

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