烷基糖苷的泡沫扫描研究

Foaming Scan of Alkyl Glycoside

摘要:

采用泡沫扫描方法全面研究了APG浓度、N2流量和盐含量对APG泡沫性能影响。结果表明，在1000s内所有样品泡沫高度不变，稳泡性很好，除ρ（APG）=0.25cmc泡沫时间为149s外，其余浓度发泡时间都在144?s之间，随表面活性剂浓度增加，泡沫相对电导、泡沫最大密度和泡沫稳定指数值都增加。N2流量对体系发泡性能影响较大，最佳N2流量为40mL/min。随盐含量增加发泡时间稍微有所减少而泡沫稳定指数增加。在稳泡阶段，随时间延长和N2流量增加，泡沫数量越来越少，泡沫单个面积越来越大。盐含量高时泡沫数量较多。随表面活性剂浓度增加，泡沫数量增加，但泡沫总面积和平均面积减小。

Abstract:

An extensive study of the foaming properties of APG influenced by APG’s concentration，N2 flow rate and salt concentration were investigated using the Foam Scan. The results showed that all the APGs had good foam stabilities in 1000s. In addition of c(APG) = 0.25cmc of foaming time was 149s,the remaining concentration of foaming time were at the range of 144 ?2s.The foam relative conductivity, foam maximum density and foam stability index continu-ally increased with increasing the surfactant concentration. N2 flow rate had comparatively effect and there was an op-timal N2 flow rate of 40mL/min. Foaming time slightly reduced but foam stability index increased with the increase of salt concentration.During the foaming stability investigation, the number of foams were fewer and fewer while single foam area changed more larger with increasing time and N2 flow rate. More the number of foam had been found in high salt concentration than low salt concentration. With the increase of surfactant concentration, the quantity of foam in-creased but the total area and average size of the bubble decreased.