Screening of Surfactant Foaming Properties Using the Gas‐Sparging Method: Design of an Optimal Protocol,Journal of Surfactants and Detergents

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Screening of Surfactant Foaming Properties Using the Gas‐Sparging Method: Design of an Optimal Protocol
Journal of Surfactants and Detergents ( IF 1.6 ) Pub Date : 2019-11-29 , DOI: 10.1002/jsde.12376
Rémy Bois ₁ , Elisabeth Hecke ₁ , Isabelle Pezron ₁ , Alla Nesterenko ₁

Affiliation

Foaming properties of five model surfactants, namely, sodium laureth sulfate (SLES), sodium dodecylsulfate (SDS), polyoxyethylene 23 lauryl ether (Brij L23), polysorbate 20 (Tween 20), and polysorbate 80 (Tween 80), have been compared as a function of experimental conditions using the gas‐sparging method. The influence of surfactant concentration relative to the critical micelle concentration (CMC) and three process parameters—frit porosity, gas flow rate, and preset volume of foam (or bubbling time)—was studied by means of a 2^4–1 factorial design. Three foaming properties were considered: foam capacity, foam stability, and maximal foam density. At the CMC, SLES, SDS, Tween 20, and Brij L23 were indistinguishable, all having very high foaming capacity and stability, regardless of process conditions. At 0.1 CMC, differences among them were highlighted especially at the lowest frit porosity coupled to the highest gas flow rate. Those conditions are thus recommended when a rapid screening of surfactant foaming performances is needed.

中文翻译：

气体喷射法筛选表面活性剂起泡性能：最佳方案的设计

比较了五种模型表面活性剂的发泡性能，即月桂基硫酸钠（SLES），十二烷基硫酸钠（SDS），聚氧乙烯23月桂基醚（Brij L23），聚山梨酯20（Tween 20）和聚山梨酯80（Tween 80）。使用气体喷射方法的实验条件的函数。表面活性剂浓度相对于临界胶束浓度（CMC）和三个工艺参数（玻璃料孔隙率，气体流速和泡沫的预定体积（或起泡时间））的影响已通过2 ^4–1的方法进行了研究。析因设计。考虑了三种发泡特性：泡沫容量，泡沫稳定性和最大泡沫密度。在CMC上，无论工艺条件如何，SLES，SDS，Tween 20和Brij L23都无法区分，它们都具有非常高的发泡能力和稳定性。在0.1 CMC时，它们之间的差异特别突出，特别是在最低的玻璃料孔隙率和最高的气体流速之间。因此，当需要快速筛选表面活性剂发泡性能时，建议使用这些条件。

更新日期：2019-11-29

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