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Citation: LIU Hong-Jing, HE Gao-Hong, LIN Chang, ZHAO Wei, XIAO ng-Kui. Controlling Water Transport in W/O/W Multiple Emulsion[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 935-939. doi: 10.3866/PKU.WHXB20070628 shu

Controlling Water Transport in W/O/W Multiple Emulsion

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 Date: 1 December 2006
Available Online: 29 April 2007

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.
- W/O/W multiple emulsion; Water transport; Chemical potential; Stability; DSC
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