The tensile strength of thin aqueous films plays an important role in foaming systems. This study experimentally measured the film tension by applying a new method to three soap solutions with different glycerol contents. It was found that the film tension was independent of bubble size. The results indicated that the molecular interaction within the thin liquid film has a negative contribution to the film tension of ca. −3 mN m⁻¹. The glycerol content has an insignificant influence on the film tension. This new method can provide unique insights into foam systems in food, detergency, and chemical processes.

中文翻译：

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测量洗涤剂稳定皂膜的拉伸强度

薄水膜的拉伸强度在发泡系统中起着重要作用。本研究通过对具有不同甘油含量的三种肥皂溶液应用一种新方法，通过实验测量了薄膜张力。发现薄膜张力与气泡大小无关。结果表明，薄液膜内的分子相互作用对约的膜张力有负面影响。-3 mN m ^-1。甘油含量对薄膜张力的影响不大。这种新方法可以为食品、洗涤剂和化学过程中的泡沫系统提供独特的见解。