مقاله Effects of gelator 12-hydroxystearic acid (12-HSA) on ionic liquid based Pickering emulsions : تی پی بین

خلاصه مقاله

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.

نویسندگان

Jin Zou [ School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, United States ]

Denzil S. Frost [ School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, United States ]

Lenore L. Dai [ School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, United States ]

کلمات کلیدی

Gelator 12 hydroxystearic acid Ionic liquid Pickering emulsions Interfacial gelation

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Colloids and Surfaces A: Physicochemical and Engineering Aspects

Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications ofcolloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.Criteria for publication in Colloids and Surfaces A are novelty, quality and current interest. Manuscripts which only make routine use of or minor extensions to well established methodologies (e.g. fitting adsorption data to a Langmuir or Freundlich isotherm) are no appropriate for the journal.

حوزه های تحت پوشش : Physicochemical , food, energy, minerals processing, pharmaceuticals , environment