摘要
以石油醚为油相,以聚异丁烯单丁二酰亚胺(T151)、聚异丁烯多丁二酰亚胺(T155)为表面活性剂,制备了W/O(W代表水相,O代表油相,下同)单重乳液和W/O/W多重乳液,并进行了乳状液膜稳定性的研究。以破乳率、泄漏率和表观溶胀率为衡量指标,考察了表面活性剂种类和用量、油水比(油相体积与内水相体积的比)、乳水比(W/O单重乳液的体积与外水相体积的比)、制乳转速等参数对乳状液膜稳定性的影响。结果表明,表面活性剂的用量、油水比、乳水比和制乳转速均存在最佳值,即:(a)T151体积分数6%,油水比1∶1,一次制乳转速3 000 r/min,乳水比为1∶6,二次制乳转速300 r/min;(b)T155体积分数4%,油水比1∶1,一次制乳转速4 000 r/min,乳水比为1∶8,二次制乳转速400 r/min,此时的W/O/W多重乳液乳状液膜最稳定。
Emulsion liquid membrane （ELM） was prepared with petroleum ether as oil phase,T151 and T155 as emulsifiers in this study. Reserch is focused on the stability of the ELM in terms of the stability of Water/Oil （W/O） and Water/Oil/Water （W/O/W） emulsion membranes,which can be judged by rates of demulsion,leakage and swell ing. The effects of surfactant,oil/water ratio,emulsion/water ratio,and the stability of speed of stirring on ELM were studied. The data showed that ELM can be most stable in some critical conditions,e, g. （a） the dosage of surfactant T151 in oil phase at 6%,oil/water ratio at 1 ： 1, speed of primary stirring at 3 000 r/min,emulsion-water ratio at 1 ： 6, the speed of secondary stirring at 300 r/min and （b） the dosage of surfactant T155 in oil phase at 40/00 ,oil/water ratio at 1 ： 1, the speed of primary stirring at 4 000 r/min,emulsion/water ratio at 1 ： 8,the speed of secondary stirring at 400 r/min.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2008年第8期19-23,共5页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.20670122)
关键词
乳状液膜
稳定性
石油醚
破乳
泄漏
溶胀
emulsion liquid membrane
stability
petroleum ethe
demulsification
leakage
swelling
