Abstract

Sugar-based surfactants are a class of environmentally-friendly surface-active molecules well known for their functional performances, good biodegradability and reduced ecological footprint. Many previous studies have explored the surface properties of these surfactants. However, very little research has investigated their foaming properties. The present study examines the foaming behavior of 17 nonionic sugar-based surfactants with gradual structure variation. Foaming properties such as foamability, foam stability and maximum foam density were measured using the gas-sparging method. The influence of surfactant structure and concentration on foaming properties was evaluated. The data on surface adsorption properties, determined in the previous study, and foaming properties were then analyzed using a Principal Component Analysis. It was shown that the foaming behavior of glycolipids can be correlated to concentration and interfacial properties. Predictive models are proposed to anticipate the foaming behavior and provide a useful guide for screening the foamability of bio-based surfactants in various technological applications.

摘要

糖基表面活性剂是一类环境友好的表面活性分子，以其功能性能、良好的生物降解性和减少生态足迹而闻名。许多先前的研究已经探索了这些表面活性剂的表面特性。然而，很少有研究调查它们的发泡性能。本研究考察了 17 种结构逐渐变化的非离子糖基表面活性剂的发泡行为。使用气体喷射法测量发泡性能，例如发泡性、泡沫稳定性和最大泡沫密度。评估了表面活性剂结构和浓度对发泡性能的影响。然后使用主成分分析对先前研究中确定的表面吸附特性和发泡特性的数据进行了分析。结果表明，糖脂的发泡行为可能与浓度和界面特性相关。提出了预测模型来预测发泡行为，并为筛选生物基表面活性剂在各种技术应用中的发泡性提供了有用的指导。