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| 陶瓷膜乳化法制备油包水乳状液的初步研究 |
| A Priliminary Study on Preparation of W/O Emnlsions by Ceramic Membrane Emulsification Technology |
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| DOI：10.3969/j.issn.1671-5322.2004.04.001 |
| 中文关键词: 陶瓷膜 膜乳化 W/O乳状液 表面活性剂 界面张力 |
| 英文关键词: ceramic membrane membrane emulsification W/O emulsions surfactant interfacial tension |
| 基金项目: |
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| 中文摘要: |
| 以亲水性氧化锆膜为乳化媒介,煤油为连续相,纯净水为分散相,在有表面活性剂存在的条件下,采用一体式陶瓷外膜乳化装置直接制备W/O乳液.比较了不同种类表面活性剂对乳化效果的影响;研究了表面活性剂对界面张力的影响.结果表明:用亲水性陶瓷外膜直接乳化法制得的W/O乳液均一、稳定;在转速为490 rpm,操作压力为0.1 MPa,表面活性剂浓度为1×10-4 mol/L的条件下,在分散水相中加入阳离子表面活性剂CTAB制备W/O乳液效果最好,乳液粒径在1～2 μm左右,阴离子表面活性剂SDS制乳效果其次,非离子表面活性剂OP最差;当水中加入的表面活性剂CTAB、SDS、OP浓度皆为1×10-4 mol/L时,对应的水-煤油界面张力分别降至12.03 m N/m、23.28 m N/m、24.64 m N/m. |
| 英文摘要: |
| W/O emulsions have been prepared with kerosene as the continuous phase, water as the dispersed phase, ZrO2 ceramic membrane as the emulsifying medium by using submerged ceramic membrane emulsification apparatus. This paper studies effects of the type of emulsifier on emulsification results and the effects of emulsifier on interfacial tension. The experimental results show that monodispersed water-in-oil emulsions can be obtained with hydrophilic ceramic microporous membrane emulsification system. When stirring speed is 490rpm, transmembrane pressure is 0.1MPa, the concentration of emulsifier is 1×10-4 mol/L, the emulsification results with CTAB is superior to SDS and OP is the worst of the three. The droplet size is about 1～2 μm by using CTAB as emulsifier. When the concentrations of CTAB, SDS and OP are all 1×10-4 mol/L, the interfacial tensions are decreased to 5.78 m N/m, 23.28 m N/m, 24.64 m N/m respectively. |
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