硫酸盐型孪连表面活性剂及其复配体系的泡沫性能

采用动态泡沫扫描法研究了双直链烷基硫酸盐型孪连表面活性剂水溶液的泡沫性能,并考察了添加氯化钠和疏水缔合水溶性聚丙烯酰胺(HMPAM)后对其泡沫性能的影响。结果表明,此系列孪连表面活性剂具有良好的泡沫性能;随着联接基长度的增加,表面活性剂的起泡能力略有降低,泡沫的稳定性能却明显下降;随着温度升高,泡沫半衰期显著降低;无机盐的加入使表面活性剂的起泡能力减弱,而泡沫稳定性随无机盐浓度的增加先升高后降低;HMPAM的加入明显增强了泡沫稳定性。

Study of Foaming Properties of Di-n-alkyl Disulfate Surfactants and their Mixed Systems

The foaming properties of Di-n-alkyl disulfate surfactants in aqueous solution were measured by the Foamscan, and the effect of different additives such as sodium chloride and polymers were investigated. Results show that these surfactants have excellent foam properties. Foam stability decreased significantly with the increase of spacer length. With temperature rising, half foam life period decreased remarkably. The electrolyte deduced the foaming volume, while the foam stability increased firstly with the increase of sodium chloride concentration to a certain extent and then dropped. The polymer can enhance foam stability.