The effect of surfactant type and concentration on the size and stability of microbubbles produced in a capillary embedded T-junction device
The effect of surfactant type and concentration on the size and stability of microbubbles produced in a capillary embedded T-junction device
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DOI：
10.1039/c4ra15167d
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发表时间：
2015-01-01
期刊：
影响因子：
3.9
通讯作者：
Stride, E.
中科院分区：
文献类型：
--
作者：
Parhizkar, M.;Edirisinghe, M.;Stride, E.
本文研究了表面活性剂对微泡形成、尺寸和稳定性的影响。选择了四种不同的表面活性剂。阴离子表面活性剂十二烷基硫酸钠（SDS）、两种非离子表面活性剂聚氧乙烯脱水山梨糖醇双棕榈酸酯（吐温40）和聚氧乙烯乙二醇40硬脂酸酯（PEG 40）以及阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）。将每种表面活性剂以2至5和10重量%的高浓度（高于临界胶束浓度）加入到50重量%甘油水溶液中。测量静态表面张力和接触角，以及溶液的粘度。虽然表面张力的值并没有显着变化，随着表面活性剂浓度的增加，其他性质的解决方案（即粘度和接触角）的影响。尺寸在50至360 mm之间变化的微泡，所有微泡的多分散指数值均为
This work presents an investigation of the effect of various surfactants on microbubble formation, size and stability in a capillary embedded T-Junction microfluidic device. Four different surfactants were chosen. An anionic surfactant, sodium dodecyl sulfate (SDS), two non-ionic surfactants, polyoxyethylene sorbitan monopalmitate (Tween 40) and polyoxyethylene glycol 40 stearate (PEG 40), and a cationic surfactant, cetyltrimethyl ammonium bromide (CTAB). Each surfactant was added to 50 wt% aqueous glycerol solution at high concentration (above the critical micelle concentration) varying from 2 to 5 and 10 wt%. Static surface tension and contact angle were measured, as well as the viscosity of the solutions. While the value of surface tension did not significantly change with increasing surfactant concentration, other properties of the solutions (i.e. viscosity and contact angle) were affected. Microbubbles with sizes varying from 50 to 360 mm all with polydispersity index values of