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Citation: Danni Yu, Zhenghao Gu, Yonghu Han. Determination of Surface Parameters of Tween-80 and Cross-Sectional Area of Hydrophilic Molecules by Maximum Bubble Pressure Method[J]. University Chemistry, ;2020, 35(3): 67-75. doi: 10.3866/PKU.DXHX201906047 shu

Determination of Surface Parameters of Tween-80 and Cross-Sectional Area of Hydrophilic Molecules by Maximum Bubble Pressure Method

School of Science, China Pharmaceutical University, Nanjing 211198, P. R. China

Received Date: 25 July 2019

The surface adsorption isotherm behavior of the non-ionic surfactant Tween-80 at 25℃ was measured by the upgraded maximum bubble device. The critical micelle concentration (CMC) and the cross-sectional area of the hydrophilic group of Tween-80 was obtained. The advantages and disadvantages in the method were analyzed. This experiment provided a way for students to learn and analyze complex surface adsorption isotherms.
- Bubble-pressure method,
- Tween-80,
- Critical micelle concentration,
- Cross-sectional area of molecules
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