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• W2767598679 abstract "Porous spheres of the conducting polymer polyaniline (PANI) and its derivatives are promising materials for use as functional encapsulants for payload delivery and catalyst supports. Stable water-in-oil-in water (W/O/W) double emulsions can be used to obtain this morphology, but typically require multiple surfactants and stabilizers. A single surfactant system that uses a small amphiphilic molecule is desirable, as it can simplify the method, improve its efficiency, and reduce its cost.Granular poly(o-toluidine) (POT) was transformed into porous microspheres when ammonium hydroxide was added to an aqueous acidic dispersion containing the preformed polymer and amphiphilic o-toluidine (OT). The OT, POT, and ammonium hydroxide concentrations were varied to understand the formation mechanism. Conditions were optimized to obtain a narrowed size distribution.The rapid change from acidic to alkaline surroundings produces a W/O/W double emulsion from POT and OT over a relatively narrow concentration range. Spheres form when POT dissolves in immiscible OT droplets, and entrapped water droplets form the pores. OT serves as the single amphiphilic surfactant and dissolved POT serves as a hydrophobic co-stabilizer. o-Toluidine, m-toluidine, or p-toluidine could be used as the single surfactant to obtain porous spheres from preformed POT, PANI and poly(m-toluidine)." @default.
• W2767598679 created "2017-11-17" @default.
• W2767598679 creator A5000640352 @default.
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• W2767598679 date "2018-03-01" @default.
• W2767598679 modified "2023-10-15" @default.
• W2767598679 title "Porous microspheres of polyaniline, poly(o-toluidine), and poly(m-toluidine) prepared from double emulsions stabilized by toluidine isomers as the single surfactant" @default.
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• W2767598679 doi "https://doi.org/10.1016/j.jcis.2017.11.029" @default.
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• W2767598679 hasPublicationYear "2018" @default.
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