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Redox Responsive Release of Hydrophobic Self-Healing Agents from Polyaniline Capsules
journal contribution
posted on 2015-12-16, 23:35 authored by Li-Ping Lv, Yi Zhao, Nicole Vilbrandt, Markus Gallei, Ashokanand Vimalanandan, Michael Rohwerder, Katharina Landfester, Daniel CrespyRedox-responsive nanocapsules consisting
of conductive polyaniline
and polypyrrole shells were successfully synthesized by using the
interface of miniemulsion droplets as a template for oxidative polymerizations.
The redox properties of the capsules were investigated by optical
spectroscopies, electron microscopy, and cyclic voltammetry. Self-healing
(SH) chemicals such as diglycidyl ether or dicarboxylic acid terminated
polydimethylsiloxane (PDMS-DE or PDMS-DC) were encapsulated into the
nanocapsules during the miniemulsion process and their redox-responsive
release was monitored by 1H NMR spectroscopy. The polyaniline
capsules exhibited delayed release under oxidation and rapid release
under reduction, which make them promising candidates for anticorrosion
applications.
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1 H NMR spectroscopyconductive polyanilineredox propertiesminiemulsion dropletscyclic voltammetryanticorrosion applicationsRedox Responsive Releasepolypyrrole shellsnanocapsulereleaseelectron microscopypolyaniline capsulesdiglycidyl etheroxidative polymerizationsSHdicarboxylic acidminiemulsion process
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