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Measurement approach of interfacial tension on example of water-toluene

机译:水 - 甲苯的界面张力的测量方法

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A quite simple experimental method for interfacial tension determination is presented. It is based on measurements done in the digital photographs of the drops at the creation moment. It is validated with the result of other researchers. The interfacial tension for water-toluene interface is obtained in the range 0.1°C-96.6°C. It is almost constant up to 40°C. Then appear linear decrease to 80°C. Next is observed sharp drop to 96.6°C. Uncertainties of the determined values are estimated. A gaseous phase occurs at temperature close to the boiling point, thus interfacial tension was not determined. The experimental results are presented with a rational function.
机译:提出了一种非常简单的界面张力测定的实验方法。它基于在创建时刻的滴剂的数字照片中完成的测量。它被其他研究人员的结果验证。水 - 甲苯界面的界面张力在0.1℃-96.6℃的范围内得到。它几乎恒定到40°C。然后将线性减小显示为80°C。接下来观察到急剧下降至96.6°C。估计确定值的不确定性。在接近沸点的温度下发生气相,因此不确定界面张力。实验结果具有合理的功能。

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