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  • effects of gelator 12-hydroxystearic acid (12-hsa) on ionic liquid based pickering emulsions

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     we have examined the perturbation effects of 12-hydoxystearic acid (hsa) on ionic liquid (il)-based pickering emulsions. the 12-hsa gelled pure 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][pf6]) ionic liquid and polydimethylsiloxane (pdms) oil effectively by the formation of entangled networks of thin fibers but not the water phase. in il-in-water pickering emulsions, the 12-hsa gelled the il–water interfaces rather than the entire il droplets since the 12-hsa partitioned into the water phase. in addition, we found that the morphology of interfacial gelation could be altered by manipulating cooling rate which provided a new way of controlling the solid particle transport into the dispersed phase. the 12-hsa effectively stabilized oil-in-il pickering emulsions by increasing the elastic modulus of the bulk phase and consequently overcoming the buoyancy force of the bridged droplets. these results indicate that phenomena unique to il based pickering emulsions can be tuned by the addition of an organogelator.

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