用立方型状态方程关联高分子溶液汽液平衡

Correlation of Vaporliquid Equilibria for PolymerSolutions Using Cubic Equation of State

通过Ｗｏｎｇ－Ｓａｎｄｌｅｒ混合规则将Ｐｅｎｇ－Ｒｏｂｉｎｓｏｎ方程与胡英等的密堆积格子模型相结合，建立了可用于高分子溶液汽液平衡计算的立方型状态方程。该方程保持了立方型状态方程的简单性，又吸收了密堆积格子模型描述高分子溶液热力学性质的优点。对高分子溶液汽液平衡的关联误差小于３％。

An equation of state for the calculation of vaporliquid equilibrium of polymer solutions has been developed by combining the PengRobinson equation of state with the closedlattice model of mixing Helmholtz function presented by Hu et al through WongSandler mixing rule.It is shown that good agreement between experimental data and calculated results can be obtained for binary polymer solutions.The deviations are less than 3%.