物理化学学报 >> 2007, Vol. 23 >> Issue (06): 935 -939 .doi: 10.3866/PKU.WHXB20070628

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W/O/W多重乳液中水传递的控制

刘红晶; 贺高红; 林畅; 赵薇; 肖公奎   

  1. 大连理工大学化工学院, 精细化工国家重点实验室, 膜科学与技术研究开发中心, 辽宁 大连 116012

  • 收稿日期:2006-12-01 修回日期:2007-02-05 发布日期:2007-06-04
  • 通讯作者: 贺高红 E-mail:hgaohong@dlut.edu.cn

Controlling Water Transport in W/O/W Multiple Emulsion

LIU Hong-Jing; HE Gao-Hong; LIN Chang; ZHAO Wei; XIAO Gong-Kui   

  1. State Key Laboratory of Fine Chemicals, Research & Development Center of Membrane Science & Technology, School of Chemical Engineering, Dalian University of Technology, Dalian 116012, Liaoning Province, P. R. China

  • Received:2006-12-01 Revised:2007-02-05 Published:2007-06-04
  • Contact: HE Gao-Hong E-mail:hgaohong@dlut.edu.cn

摘要:

建立了简化的W/O/W(水/油/水)多重乳液乳珠模型——统计平均半径模型, 预测出当W/O/W多重乳液内水相水滴之间以及内外水相之间均达到水传递平衡时的内外水相中盐的浓度, 从而实现对水传递的控制, 以维持W/O/W多重乳液的稳定. 按理论预测制备出了不同稳定态的W/O/W多重乳液, 利用差分扫描量热仪(DSC)检测了多重乳液中水的传递过程, 确定体系在实验状态下的稳定程度, 实验结果与理论预测基本吻合.

关键词: W/O/W多重乳液, 水传递, 化学势, 稳定性, DSC

Abstract:

A simplified W/O/W (water/oil/water) multiple emulsion model-statistic mean radius model was established in order to keep the stability of multiple emulsions by controlling their water transport. Salt concentrations in the internal and external phases were predicted by this model so that water transport equilibrium among droplets in oil phase and between the internal and external phases was attained by tailoring the solvent chemical potential of the multiple emulsion. Differential scanning calorimetry (DSC) was used to test the extent of water transport for multiple emulsions experienced a circle of freezing and thawing process. The testing results agreed well with our theoretic prediction for the stability of multiple emulsions. Therefore, it was feasible to maintain W/O/W multiple emulsions’ stability by controlling their water transport process.

Key words: W/O/W multiple emulsion, Water transport, Chemical potential, Stability, DSC

MSC2000: 

  • O648