Thermophysical property measurements of polymer solutions and development of their data bases

本论文的主要目的是对天然气溶解度和扩散系数进行测量和数据积累，并建立这些性质的预测方法和数据库。本研究取得了如下成果：1.溶质在聚合物中的溶解度（气液平衡）研究的系统：乙烯+高抗冲聚丙烯，丙烯+高抗冲聚丙烯，己烷在乙烯+高抗冲聚丙烯中的无限稀释汽液平衡比，正己烷在丙烯+高抗冲聚丙烯体系中无限稀释汽液平衡比正己烷的无限稀释汽液平衡比可以用Sanchez-Lacombe（S-L）模型预测状态方程与拟合二元相平衡数据得到的二元相互作用参数.聚合物和溶剂体系的液液平衡研究了正己烷+聚乙烯、乙烯+正己烷+聚乙烯三元体系的液液平衡数据可以用含二元相互作用参数的S-L状态方程进行预测.聚合物的PVT研究体系：聚乳酸、聚丁二酸丁二醇酯、聚丁二酸-己二酸丁二醇酯这些可生物降解聚合物熔体的PVT性质可以用基团贡献改进的胞模型状态方程进行预测.聚合物溶液数据库的开发利用上述实验数据和文献值开发了数据库。该数据库是T.国家计量研究实验室。日本，将出现在互联网上。

The objective of this work is measurements and data accumulation of gas solubility and gas diffusivity as well as development of prediction method and data base of these properties. Outcomes obtained in this work are shown as follows :1. Solubilities of solute in polymer (vapor-liquid equilibria)Investigated systems: ethylene + high impact polypropylene, propylene + high impact polypropylene, infinite dilution vapor-liquid equilibrium ratio of hexane in ethylene + high impact polypropylene, infinite dilution vapor-liquid equilibrium ratio of hexane in propylene + high impact polypropyleneThe infinite dilution vapor-liquid equilibrium ratios of hexane could be predicted by Sanchez-Lacombe (S-L) equation of state in conjunction with binary interaction parameters obtained from fitting binary phase equilibrium data.2. Liquid-liquid equilibria for polymer and solvent systemInvestigated systems: hexane + polyethylene, ethylene + hexane + polyethyleneTernary liquid-liquid equilibrium data could be predicted by S-L equation of state with binary interaction parameter.3. PVT of polymerInvestigated systems: polylactide, poly(butylene succinate), poly(butylenes succinate-co-adipate)PVT properties of these biodegradable polymer melts could be predicted by group contribute modified cell model equation of state.4. Data base development for polymer solutionsThe data base was developed by using the experimental data described above and literature values. This data base, which plays a part in the thermophysical property data base developed by Dr. T. Baba, National Research Laboratory of Metrology. Japan, will be appeared on the Internet.