| 一体式陶瓷外膜直接乳化法制备单分散水包油乳液 |
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| 引用本文： | 吴俊,景文珩,邢卫红,徐南平. 一体式陶瓷外膜直接乳化法制备单分散水包油乳液[J]. 化工学报, 2005, 56(7): 1284-1287 |
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| 作者姓名： | 吴俊 景文珩 邢卫红 徐南平 |
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| 作者单位： | 南京工业大学膜科学技术研究所，江苏 南京 210009 |
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| 基金项目： | 国家自然科学基金项目（20125618）;国家重点基础研究发展规划项目（2003CB615V00V）. |
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| 摘 要： | 膜乳化法是靠膜两侧的压差使分散相通过微孔膜，以小液滴的形式分散在连续相中而形成乳状液的方法．与转一定体系、高压均化等传统制乳方法相比，膜乳化法所制得的乳液具有液滴尺寸均一、节能、剪应力小等特点，可应用于食品、医药、聚合物工业等领域．过去的十几年中，尽管在膜乳化方面进行了大量的工作，过程参数对乳滴尺寸的影响并未完全研究清楚．甚至在一些研究中，仅仅把平均乳滴直径作为分布参数．
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| 关 键 词： | 膜乳化 单分散W/O乳液 陶瓷膜 |
| 文章编号： | 0438-1157（2005）07-1284-04 |
| 收稿时间： | 2004-09-13 |
| 修稿时间： | 2004-09-13 |
Preparation of monodispersed oil-in-water emulsions by ceramic external membrane emulsification technique |
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| WU Jun,Jing Wenheng,Xing Weihong,XU Nanping. Preparation of monodispersed oil-in-water emulsions by ceramic external membrane emulsification technique[J]. Journal of Chemical Industry and Engineering(China), 2005, 56(7): 1284-1287 |
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| Authors: | WU Jun Jing Wenheng Xing Weihong XU Nanping |
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| Abstract: | In the present work, oil-in-water emulsions were prepared with toluene-water as working system, sodium lauryl sulfate as emulsifier,and α-Al2O3 ceramic membrane with pore size of 1.5 μm as emulsifying medium in a new submerged emulsification apparatus. The effects of stirring speed,transmembrane pressure and emulsifier concentration on the droplet size of emulsions and its distribution as well as the dispersed phase flux were studied. The experimental results showed that monodispersed oil-in-water emulsions could be obtained with the ceramic membrane emulsification system. With the increase of stirring speed and emulsifier concentration, mean droplet size and the span of the droplet size distribution decreased, and the dispersed phase flux hardly changed at the same time.However,mean droplet size and the span of the droplet size distribution increased, and the dispersed phase flux increased significantly with the increase of transmembrane pressure. A linear relationship between the dispersed phase flux and transmembrane pressure at low pressures was obtained. |
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| Keywords: | emulsification oil-in-water emulsions ceramic membrane |
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