本研究使用高壓密度儀分別量測高壓下混合溶劑與高分子溶液的密度數據，這些混合物包含了由茴香醚、苯乙酮、聚乙二醇-200與聚乙二醇甲基醚-350所組成的三組雙成份和二組參成份系統。操作的溫度由298.15 K到348.15 K，而操作壓力最高達50 MPa。所量得的密度數據可用Tait模式和一選擇的半經驗模式準確關聯。利用Tait模式的參數值可求得恆溫壓縮係數。四種純質的恆溫壓縮係數大小依序為：茴香醚＞苯乙酮＞聚乙二醇甲基醚-350＞聚乙二醇-200。雙成份系統的過剩體積則採用Redlich-Kister（R-K）模式作關聯。
本研究使用FOV與Schotte兩個狀態方程式進行PVT數據的關聯，此兩個模式均能準確關聯雙成份混合物之比容。利用由純物質和雙成份混合物數據所求得的模式參數，這些狀態方程式可用於預測多成份高分子溶液的比容，但預測值大都偏高。

In this study, we measured the densities for mixed solvents and polymer solutions by a high-pressure densimeter. The mixtures include two binary and three ternary systems, containing anisole, acetophenone, PEG-200, and PEGME-350. Operating temperatures were in a range of 298.15 K to 348.15 K and the pressures were up to 50 MPa.
Tait model and a choosed semi-empirical model can correlate accurately the density data. The isothermal compressibilities were calculated with the aid of Tait constants. The magnitudes of the isothermal compressibility follow the order of anisole＞acetophenone＞PEGME-350＞PEG-200. The R-K model was applied to correlate the excess volumes of each binary system.
The FOV and the Schotte equations of state were also applied to correlate the PVT data. Both models correlated well the specific volumes of each binary system. With the parameters determined from pure materials and binary systems, the equations of state were used to predict the specific volumes for multi-component polymer solutions. However, the predicted results appear to be larger than the experimental values.

第一章 緒論
第二章 高分子溶液之高壓密度量測
第三章 數據關聯
第四章 結論

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