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本文根据前文提出的高聚物溶液中大分子链尺寸的浓度依赖关系式,结合Zimm用于计算稀溶液第二维里系数的统计力学硬球模型,利用聚合物的数均分子量及其Mark-Houwink方程,计算了16种聚合物-溶剂体系在不同溶液浓度范围内的比浓渗透压。结果表明,计算值与稀溶液、亚浓溶液浓度范围内的实验值相当一致,甚至与浓溶液浓度范围内的实验值也十分接近。这显示了本法用于计算高分子溶液的渗透压是令人满意的。
Based on the concentration dependence of macromolecular chains in polymer solution and the statistical mechanics hard sphere model of Zimm used to calculate the second virial coefficient of dilute solution, this paper uses the polymer’s number-average molecular weight and its Mark-Houwink The specific osmolarities of 16 polymer-solvent systems at different solution concentrations were calculated. The results show that the calculated values are in good agreement with the experimental values in dilute and sub-concentrated solutions, even close to the experimental values in the concentrated solution concentration range. This shows that this method is satisfactory for calculating the osmotic pressure of a polymer solution.