中文摘要：

给出溶胀法计算优先吸附系数的理论关系式,测定聚甲基丙烯酸甲酯交联网络-氯仿（1）-甲醇（2）和聚苯乙烯交联网络-苯（1）-甲醇（2）两个实际体系.实验结果显示,对于聚甲基丙烯酸甲酯交联网络-氯仿（1）-甲醇（2）体系,得到的数据与线型体系一致;对于聚苯乙烯交联网络-苯（1）-甲醇（2）体系,测得的优先吸附数据普遍低于线型聚苯乙烯在相同混合溶剂中的值.从交联网络的溶胀度和结构均匀性方面对实验结果进行了解释.

英文摘要：

A formula is given for calculating the preferential adsorption coefficient A for swelling systems of polymer networks in solvent mixtures. The polymethyl methacrylate （PMMA） network system containing chloroform （ 1 ） and methanol （2） as well as the polystyrene （PS） network system containing benzene （ 1 ） and methanol （2） were studied. In the former case the values A obtained from the swelling experiment are in good agreement with those from the same linear PMMA solution system, but in the latter case the values A are always lower than the corresponding linear PS solution system. This difference in behavior of the two systems is explained in terms of swelling degrees and uniformity of network structures.