Journal
LANGMUIR
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.2c01243
Keywords
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Funding
- Republic of Turkey The Ministry of National Education
- Engineering and Physical Sciences Research Council [EP/J500525/1]
- Medical Research Council [MR/L012669/1]
- EPSRC [EP/I007695/1]
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Emulsion templating is a method for producing highly porous and interconnected polymer foams. This study introduces a system using submicrometer polymer particles to stabilize emulsions, resulting in highly interconnected large pore structures. This production method offers an interesting alternative for applications that require large pore structures.
Emulsion templating is a method that enables the production of highly porous and interconnected polymer foams called polymerized high internal phase emulsions (PolyHIPEs). Since emulsions are inherently unstable systems, they can be stabilized either by surfactants or by particles (Pickering HIPEs). Surfactant-stabilized HIPEs form materials with an interconnected porous structure, while Pickering HIPEs typically form closed pore materials. In this study, we describe a system that uses submicrometer polymer particles to stabilize the emulsions. Polymers fabricated from these Pickering emulsions exhibit, unlike traditional Pickering emulsions, highly interconnected large pore structures, and we related these structures to arrested coalescence. We describe in detail the morphological properties of this system and their dependence on different production parameters. This production method might provide an interesting alternative to polysurfactant-stabilized-HIPEs, in particular where the application necessitates large pore structures.
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