采用Wilhelmy吊片法测量了不同浓度下异丙醇、正丁醇、正戊醇水溶液在25℃到65℃温度范围内的表面张力值.结果显示,在适当的浓度下,当温度超过某确定值时,被测溶液的表面张力随温度升高而增大,并且随着醇类中碳原子个数的增加,这种现象更为明显.
Experimental measurements of surface tensions have been carried out for 2-propanol, 1-butanol and 1-pentanol aqueous solutions at different concentrations between 25 ℃ and 65℃ by Wilhelmy plate method. The results show a positive surface tension gradient with the temperature when the temperature exceeds a certain value at suitable concentrations, and it becomes more evident when the the number of Carbon atoms of the solute increases.