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本文以空胞模型为基础讨论了高分子液体的状态方程式、它们的溶液和混合物的化学位公式以及相分离条件。这时液体的体积变化可以以分子间距离的改变(即囚胞尺寸的变化)和液体中孔洞数的增减来实现。若分别讨论其中某一个因素的贡献,我们得到了有关上述问题的两组方程式,但化学位公式是共同的。若作进一步简化,则分别地得到了Flory状态方程理论和Sanchez格子流体理论所给出的公式。
In this paper, we discuss the state equations of polymer liquids, their chemical formulas of solutions and mixtures, and phase separation conditions based on the empty cell model. At this time, the volume change of the liquid can be realized by the change of the intermolecular distance (that is, the change of the size of the prisons) and the increase or decrease of the number of holes in the liquid. If we separately discuss the contribution of one of these factors, we get two sets of equations about the above problems, but the chemical formula is common. For further simplification, the formulas given by the Flory equation of state and the Sanchez lattice fluid theory are respectively obtained.