臺灣博碩士論文加值系統

本研究使用高壓震盪管密度儀分別量測寡聚物溶液與摻合物在溫度介於298.15 K-348.15 K，壓力高達50 MPa的密度數據，這些混合物包含了由聚乙二醇單月桂酸酯與苯甲醇、1-辛醇、聚乙二醇辛基苯基醚或聚乙二醇壬基苯基醚所組成的四組雙成分系統。整個壓力範圍內的密度數據可用Tait模式和一半經驗模式準確關聯。
由實驗所得之密度數據，計算出不同條件下之過剩體積。苯甲醇＋聚乙二醇單月桂酸酯在整個組成範圍其過剩體積均為負值；1-辛醇＋聚乙二醇單月桂酸酯系統之過剩體積則隨著1-辛醇莫耳分率的增加，由正值轉為負值；聚乙二醇辛基苯基醚＋聚乙二醇單月桂酸酯與聚乙二醇壬基苯基醚＋聚乙二醇單月桂酸酯系統中，大部分組成之過剩體積均為負值，但在靠近純質區域會轉變為正值。這些混合物之過剩體積與組成之關係都可用Redlich-Kister模式表示。實驗所得之雙成分PVT數據可用FOV(Flory-Orwoll-Vrij)與Schotte狀態方程式準確關聯，各系統之雙成分交互作用參數則由雙成分之 PVT 數據，擬合狀態方程式訂定。

In this study, we used a high-pressure vibrating tube densimeter to measure the densities of oligomeric solutions and blends at temperatures from 298.15 K to 348.15 K and pressures up to 50 MPa. The mixtures included four binary systems of polyethylene glycol mono-laurate (PEGML) with benzyl alcohol, 1-octanol, polyethylene glycol mono-4-octylphenyl ether (PEGOPE), or polyethylene glycol mono-4-nonylphenyl ether (PEGNPE). The Tait equation and a semi-empirical model can correlate accurately the experimental density data over the entire pressure range.

The excess volumes were calculated from the experimental density data. It was found that the excess volumes were negative for benzyl alcohol+PEGML mixtures over the entire composition range. The excess volumes of 1-octanol +PEGML changed from positive to negative as an increase of the mole fraction of 1-octanol. Most of the excess volumes were negative for PEGOPE +PEGML and PEGNPE +PEGML, expcept for the regions near the pure components where the values were changed into positive. The Redlich-Kister model correlated reasonably the excess volumes at fixed temperature and pressure.The FOV (Flory-Orwoll-Vrij) and the Schotte equations of state were also employed to correlate the PVT data. The binary interaction parameter for each binary system was determined by fitting the binary PVT data to the equations of state.

中文摘要
英文摘要
誌謝
目錄
圖表索引

第一章 緒論

1-1 前言
1-2 液體密度的量測
1-3 應用於高分子系統的模式回顧
1-4 高分子溶液及其摻合物系統
1-5 研究動機與範圍
1-6 本文各章要點

第二章 寡聚物溶液與摻合物之高壓密度量測

2-1 液體密度量測裝置
2-2 實驗操作步驟
2-3 待測系統及量測之條件
2-4 高分子餾份之結構式與聚合度
2-5 密度儀校正
2-6 實驗結果與討論

第三章 數據關聯

3-1 Flory-Orwoll-Vrij (FOV) 狀態方程式
3-2 Schotte狀態方程式
3-3 雙成分交互作用參數與混合律

第四章 結論與建議

4-1 結論
4-2 建議

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