【摘要】 用色谱法测定了125℃、150℃、175℃、200℃下聚醋酸乙烯酯(PVA)同8种溶剂及150℃、175℃下聚苯乙烯(PS)同7种溶剂的无限稀释数据,并测定了聚苯乙烯-苯系统在150℃下的有限浓度数据。运用对应状态原理,得到了PVA和PS系统的比保留体积与对比温度之间的关系式,此关系式可以预测各种温度下该高聚物溶液的无限稀释溶液性质。更多还原

【Abstract】 The infinite-dilution properties have been de- termined for systems of polyvinylacetate (PVA) and 8 solvents at 125,150,175,200℃, polystyrene(PS)and 7 solvents at 150,175℃.The finite-concentration results are given for PS-benzen system at 150℃.A generalized linear relation between Vg~0 and (Tc/T)~2is obtained for systems coating the two polymers on the basis of corresponding state principle.The infinite-dilution properties for these systems under various temperatures can be predicted using this generalized relation.更多还原