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研究生： 姜智裴
Pei-hiang, Chih-
論文名稱： 聚對位乙烯基酚（PVPh）與脂肪族聚酯高分子相容性與相型態之探討
Miscibility in Blends of Poly(p-vinyl phenol) (PVPh) with Aliphatic Polyesters.
指導教授： 吳逸謨
Woo, Eamor-M
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： 107
中文關鍵詞： 高分子摻合 、相容性 、作用力
相關次數： 點閱：67  下載：1 
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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)、傅利葉紅外線光譜儀(FTIR)探討Poly(p-vinylphenol) (PVPh)與一系列直鏈型聚酯類高分子(CH2/COO=x)摻合系統之不定型區之相容性相型態及其作用力，其中聚酯類高分子包括poly(ethylene azelate) (PEAz，CH2/COO=4.5)、poly(hexamethylene adipate) (PHA，CH2/COO=5)、Poly(hexamethylene sebacate) (PHS，CH2/COO=7)。此系列PVPh/PEAz、PVPh/PHA、PVPh/PHS摻合系統均可呈現出單一玻璃轉移溫度及均勻的相型態，利用Kavocs方程式可良好的描述此系列摻合系統Tg對組成的關係，其g值對PVPh/PEAz、PVPh/PHA、PVPh/PHS分別為0.010、0.010和0.018。
    　　由FT-IR結果顯示有氫鍵作用力存在於PVPh與聚酯高分子間。而利用熔點下降及Flory-Huggins理論計算作用力參數12值，可得到PVPh/PEAz、PVPh/PHA及PVPh/PHS之12值分別為-1.230、-0.416及-0.167。因此，可証明此系列摻合系統具有作用力及良好相容性。
    　　最後利用結晶動力學了解PVPh的加入對聚酯高分子結晶速率會有明顯的抑制但不會影響聚酯高分子結晶機制。
    　　此外，PVPh/PEAz、PVPh/PHS會因為不同摻合方式而得到非均相的相型態且隨著升高溫度會出現相轉變轉為均勻的相型態，經過改變不同溶劑及摻合方式釐清，顯示其並非UCST行為而是溶劑誘導相分離。

    　　New miscible blend systems comprised of poly(p-vinyl phenol) (PVPh) and a homologous series of polyesters of different CH2/COO ratios were investigated by using differential scanning calorimeter (DSC), polarized-light microscopy (POM), scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR). The series blends of PVPh/PEAz、PVPh/PHA and PVPh/PHS all exhibit a single composition-dependent glass transition and homogeneous phase morphology. Kovacs equation is used to explained the Tg-composition relationship and the g values of PVPh/PEAz、PVPh/PHA、PVPh/PHS blends are 0.010, 0.010 and 0.018, respectively.
    　　Binary interaction strengths in these series of miscible blends were quantitatively compared. FT-IR study showed evidence of hydrogen-bonding interactions between the two polymers in blends. The quantitative Flory-Huggins interaction parameters (12) obtained from analysis of melting point depression are -1.230, -0.416 and -0.167 for PVPh/PEAz, PVPh/PHA and PVPh/PHS, respectively. The negative values proving that the blends are miscible in a wide temperature range from ambient up to high temperatures in the melt state.
    　　The rate of nucleation and growth crystallization was affected by miscible components in the blends on the basis of Avrami model.
    　　When using THF casting, the blends of PVPH/PEAz and PVPh/PHS are apparently immiscible. However, with increasing the temperatures, the blends become miscible. Utilizing different solvents and methods to prepare the binary blends it is further proved that no UCST behavior exists and the phase separation is induced by solvent.

    總目錄 頁數 中文摘要 I 英文摘要 II 誌謝 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 高分子的相容性 4 　§2-2 玻璃相轉移行為 6 　§2-3 混合物的相分離及其機制 9　 　§2-4 平衡熔點下降 10 　§2-5 結晶動力理論 12 第三章 實驗 17 　§3-1 實驗所用的高分子及試藥 17 　§3-2 實驗試樣之製備 18 　§3-3 實驗所用儀器 20 第四章 結果與討論 22 　§4-1 相容性與相型態討論 23 　　§4-1-1 PVPh/PEAz兩成分摻合系統 23 　　§4-1-2 PVPh/PHA兩成分摻合系統 26 　　§4-1-2 PVPh/PHS兩成分摻合系統 27 　§4-2 摻合系統作用力之研究 43 　　§4-2-1 PVPh/PEAz兩成分摻合系統 43 　　§4-2-2 PVPh/PHA兩成分摻合系統 45 　　§4-2-3 PVPh/PHS兩成分摻合系統 47 　§4-3摻合系統結晶行為之研究 63 　　§4-3-1 PVPh/PEAz兩成分摻合系統 63 　　§4-3-2 PVPh/PHA兩成分摻合系統 65 　　§4-3-3 PVPh/PHS兩成分摻合系統 66 　§4-4溶劑效應 77 　　§4-3-1 PVPh/PEAz兩成分摻合系統 77 　　§4-3-2 PVPh/PHA兩成分摻合系統 80 第五章 結論 101 參考文獻 103 自述 107

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