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本文采用反相气相色谱法研究了聚辛烯——溶剂(环己烷,正庚烷,四氢呋喃)三个体系的热力学性质。研究了载气流速,探针分子进样量,聚辛烯涂布量对比保留体积的影响,得到了真实比保留体积V_9~0,运用有关色谱理论以及Hory-Huggins溶液理论求算了相互作用参数X_1。结果表明,该法求得的X_1值与用蒸汽压下降法测量结果比较一致。对于聚辛烯—正庚烷体系,X_1值随温度变化规律与另外两个体系相反。证明了Hildebrand溶度参数理论对聚辛烯正庚烷体系不适用。
In this paper, the thermodynamic properties of three systems of polyoctene-solvent (cyclohexane, n-heptane, tetrahydrofuran) were studied by reversed-phase gas chromatography. The effects of carrier gas flow rate, probe molecular injection volume and polyoctenylene coating volume on the retention volume were studied. The true specific retention volume (V_9 ~ 0) was obtained. The interaction theory was calculated by using the theory of Hoch-Huggins solution Parameter X_1. The result shows that the X_1 value obtained by the method is in good agreement with the measurement result by the steam pressure drop method. For the polyoctene-n-heptane system, the variation of X_1 value with temperature is contrary to the other two systems. It is proved that the Hildebrand solubility parameter theory is not suitable for the polyoctene n-heptane system.