Novel carboxyl functional spherical electromagnetic polypyrrole nanocomposite polymer particles with good magnetic and conducting properties
作者： Hasan Ahmad , Mohammad A Ali , Mohammad M Rahman , Mohammad A Alam , Klaus Tauer
DOI: 10.1002/PI.5169
关键词:
摘要: Magnetic conducting nanoparticles with reactive functional groups are attractive materials for applications in electromagnetic interference shielding, magneto-optical storage, biomedical sensing, gas and humidity sensors, flexible electronics etc. The objective of this work was to prepare carboxyl functionalized polypyrrole (PPy) nanocomposite particles having good magnetic properties. Electromagnetic PPy nanostructures, abbreviated as PPy/γ-Fe2O3, were first prepared by a chemical one-step method. In reaction process FeCl3 is used an oxidant the polymerization pyrrole source Fe3+ formation γ-Fe2O3. γ-Fe2O3 also aided initial presence Fe2+, p-toluenesulfonic acid (p-TSA) acted dopant. effects different stabilizers on stability morphology PPy/γ-Fe2O3 evaluated. citric acid/sodium dodecyl sulfate during oxidative produced relatively stable colloidal emulsion. PPy/γ-Fe2O3/poly(methylmethacrylate-methacrylic acid) (PPy/γ-Fe2O3/P(MMA-MAA)) polymer then seeded copolymerization MMA MAA seed particles. structure nanocomposites confirmed instrumental techniques such Fourier transform IR spectroscopy, UV−visible electron micrographs, XRD X-ray photoelectron spectroscopy. electrical properties investigated. should be useful immobilization drugs or biomolecules design electrically stimulated drug delivery systems modulating activities nerve, cardiac, skeletal muscle bone cells. © 2016 Society Chemical Industry
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