MINIEMULSION FORMATION BY TRANSITIONAL INVERSION
作者:
Matilde MIÑANA-PEREZ,
Caroline GUTRON,
Carine ZUNDEL,
JoséM. ANDEREZ,
JeanL. SALAGER,
期刊:
Journal of Dispersion Science and Technology
(Taylor Available online 1999)
卷期:
Volume 20,
issue 3
页码: 893-905
ISSN:0193-2691
年代: 1999
DOI:10.1080/01932699908943826
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Very fine emulsions with droplet size in the sub-micron range, often called miniemulsions, are prepared by the moderate (magnetic) stirring of a system undergoing a dynamic transitional inversion driven by a continuous change in physicochemical formulation (here temperature). Near optimum formulation for three-phase systems, the ultralow interfacial tension favors the drop breaking rate, and fine emulsions can be made. However, this region is also known for its rapid coalescence rate. Thus, a high enough stability can be attained only by shifting the formulation away from optimum as soon as the emulsion is made. Moreover, a rapid change in formulation through the three-phase region also results in a separation phenomenon that can be harnessed to produce ultra fine droplets.
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