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采用悬滴技术分别测量了正己烷-水、正庚烷-水、正辛烷-水、正壬烷-水和正己醇-水、正庚醇-水、正辛醇-水、正壬醇-水8个系统常压下温度为293.15～343.15 K之间的界面张力.讨论了界面张力与温度的关系,发现烷烃-水系统界面张力随温度的升高呈直线下降趋势,而醇-水系统的界面张力则随温度的升高呈先增加后又变小的规律.另外,对目前广受关注的、估算界面张力的N-A法作了进一步的验证和讨论.
N-Hexane-water, n-heptane-water, n-octane-water, n-nonane-water and n-hexanol- water, n-heptanol- water, n-octanol-water, - The interfacial tension of 8 systems at atmospheric pressure between 293.15 and 343.15 K. The relationship between interfacial tension and temperature was discussed. It was found that the interfacial tension of alkane-water system decreased linearly with increasing temperature, The interfacial tension of the system first increases and then decreases with increasing temperature.In addition, the NA method, which is widely concerned about the estimation of interfacial tension, is further verified and discussed.