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Citation: ZHANG Fu-Gui, ZHAO Jian-Xi, JIANG Jia-Xing, WAN Dong-Hua. Centrifuge-Conductance Method for Quick Evaluation of O/W Emulsion Stability[J]. Chinese Journal of Applied Chemistry, ;2007, 24(8): 957-960. shu

Centrifuge-Conductance Method for Quick Evaluation of O/W Emulsion Stability

1.
Department of Applied Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002

Corresponding author: ZHAO Jian-Xi,
Received Date: 3 October 2006
Available Online: 15 December 2006
Fund Project: 国家自然科学基金(20373012) (20373012)福建省教育厅科技项目(JB05022)资助项目 (JB05022)

The sedimentation/demixing speed model of emulsion in gravitational field or centrifugal field was set up.The relationship between the conductivity and centrifugal time was obtained by accelerating the speed of sedimentation/demixing via centrifuging.The stable time (t_c) of emulsion in centrifugal field could be achieved and the stable time (t_g) of emulsion in gravitational field could also be calculated by means of the model.The centrifuge-conductance method has been developed to quickly evaluate the stability of O/W emulsion in this paper.For instance,the tc of emulsion A composed of 4% Pluronic F68,1.2% lecithin,8% mannite and 10% IPM was 22 min when the centrifugal speed was 8 000 r/min.According to the model,the t_g was 69 d and the Centrifugal demixing constant (K_A) was 48%.These data demonstrate that a stable O/W emulsion can be formed using the above mentioned formulation.
- centrifuge-conductance method,
- emulsion,
- centrifugal demixing constant,
- stability
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