如何生成水包油和油包水的胶囊

和厚度可控的平膜？  

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参考文献：Tuneable thickness barriers for composite o/w and w/o capsules, films, and their decoration with particles. D. Z. Gunes; M. Pouzot; M. Rouvet; S. Ulrich; R. Mezzenga; Soft Matter, 2011, 7, 9206; DOI: 10.1039/c1sm05997a.

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In this paper, a generation method of oil in water and water in oil capsules and flat membranes of controlled thickness is presented. This method is based on the interfacial complexation between chitosan and anionic phosphatidic fatty acids (PFacidYN). Thanks to surface tension measurements using an automatic drop tensiometer (TRACKER™ by TECLIS), it has been shown that the simultaneous presence of both species at the interface has a striking effect on the value of surface tension, which drops below 3 mN/m within a time of the order of 3 min. This is 20 times more rapid than for PFacidYN alone, and for the case of the chitosan alone, surface tension does not reach values below 20 mN/m, which demonstrates a rapid formation of the first layers of the interfacial membrane. Finally, examples of membranes decorated with uncharged polystyrene particles (diameter of 3µm) are presented, opening thus the road to various application.

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TECLIS 产品： TRACKER™ 界面流变仪

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关键词：Microfluidic, oil in water/water in oil capsules, membranes, complexation,  interfacial tension, shear rheology, adsorbed microparticles.