Coefficients of air diffusion and permeability for surfactant tetradecyltrimethylammonium bromide aqueous solution and synthetic detergent Fairy are estimated by the diminishing bubble method. It is found that the diffusion coefficient is 5.9 × 10^–4 cm²/s for tetradecyltrimethylammonium bromide and is (6.1–6.3) × 10^–4 cm²/s for Fairy, and the volume permeаbility coefficient is 0.05 cm/s for tetradecyltrimethylammonium bromide and 0.06 cm/s for Fairy. The accuracy of experimental measurements is 10–15%. The time dependence of the squared diameter of the air bubble is close to linear.

中文翻译：

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湿泡沫中空气扩散的研究

表面活性剂十四烷基三甲基溴化铵水溶液和合成洗涤剂Fairy的空气扩散系数和渗透系数通过减小气泡法估算。发现十四烷基三甲基溴化铵的扩散系数为5.9×10 ^–4 cm ² / s，仙女为（6.1–6.3）×10 ^–4 cm ² / s的扩散系数，十四烷基三甲基铵的体积渗透系数为0.05 cm / s溴化物和0.06厘米/秒的仙子。实验测量的准确性为10％至15％。气泡平方直径的时间依赖性接近线性。