Superhydrophobic conducting polymers with switchable water and oil repellency by voltage and ion exchange?
RSC Advances Pub Date: 2013-11-27 DOI: 10.1039/C3RA44960B
Abstract
In order to elaborate superhydrophobic polymers with switchable water and oil-repellency, copolymers are prepared by electrodeposition. A fluorinated monomer (EDOT-F8) is used to reach superhydrophobic properties and a monomer containing an ammonium function (EDOT-N+) to induce changes in the surface wettability by ion exchange. We also study the change in the surface wettability by dedoping at a different voltage. Surprisingly, an increase in the water and oil repellency was observed by introduction of hydrophilic monomers (EDOT-N+), which is due to a modification in the surface morphology and more precisely to the presence of small spherical particles containing thin fibrils on their surface (multi-scale roughness). The dedoping and the ion exchange (ClO4? by BF4?, Tf2N? or C8F17SO3?) especially modify the oil-repellency. Here, the highest oleophobic properties are obtained with the inorganic ions (ClO4? and BF4?).
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Journal Name：RSC Advances
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CAS no.: 89640-58-4
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