The adsorption kinetics of anionic surfactant Aerosol-OT (AOT) in 10 mM NaCl solution was investigated by measuring and simulating the dynamic and equilibrium surface tension (ST) data. The relaxation of ST for AOT molecules adsorbing onto a freshly created bubble surface was measured using a video-enhanced pendant bubble tensiometer at eighteen AOT concentrations. The partially ionized Langmuir model was applied to best-fit the dynamic/equilibrium ST data. The subsequent findings revealed that the model with a dissociation degree α of 0.1 − 0.2 described the dynamic and equilibrium ST data very well. This implied that AOT behaved as a partially ionized surfactant in 10 mM NaCl solution. The adsorption for AOT onto a clean air–water interface was found to be either (i) diffusion-controlled with a diffusivity value that varied [between 2.5 and 4.6 (10⁻⁶ cm²/s)] depending on the bulk concentration or (ii) mixed-controlled with an adsorption rate constant of 2.4 ± 0.8 (10⁷ cm³/mol.s).

通过测量和模拟动态和平衡表面张力（ST）数据，研究了阴离子表面活性剂Aerosol-OT（AOT）在10 mM NaCl溶液中的吸附动力学。使用视频增强的悬垂气泡张力计在18个AOT浓度下测量AOT分子吸附到新产生的气泡表面上的ST弛豫。应用部分电离的Langmuir模型来最佳拟合动态/平衡ST数据。随后的发现表明，解离度α为0.1-0.2的模型很好地描述了动态和平衡ST数据。这表明AOT在10 mM NaCl溶液中表现为部分离子化的表面活性剂。发现AOT在干净的空气-水界面上的吸附是（i）扩散控制的，其扩散率值在[2.5到4之间变化。^-6 cm ² / s）]取决于体积浓度，或（ii）混合控制，吸附速率常数为2.4±0.8（10 ⁷ cm ³ /mol.s）。