The surface tension of the aqueous solutions of six dyes have been measured as a function of dye concentration at 298.15 K under atmospheric pressure. The adsorbed films of four azo dyes have been found to transform from the gaseous phase to the expanded phase. The relation between the molecular structure of dye and the state of the adsorbed film has been discussed by making use of the surface pressure vs. mean area curve.
                                    在 298.15 K 的大气压力下,测量了六种
染料水溶液的表面张力与
染料浓度的函数关系。发现四种偶氮
染料的吸附膜从气相转变为膨胀相。利用表面压力与平均面积曲线,讨论了
染料分子结构与吸附膜状态之间的关系。