Synthesis And Electrochemical Research Of Surface Functional Polymer Microspheres

With the deepening of polymer microspheres, researchers is growing concern the electrochemical properties that coating of conductive polymer microspheres as a model, because of the unique nature surface functionalization of the polymer microsphere ,which will used as high functional materials ,have wide space.In this paper, emulsion polymerization were used for preparing polystyrene microspheres which diameter were about 1μm. polystyrene and acrylic acid has been microspheres particle size of about 265nm by emulsion copolymermerization, and infrared spectroscopy (FTIR) characterization confirmed that the surface of microspheres contains carboxyl, scanning electron microscopy (SEM) can be seen uniform size microspheres with good dispersion.After the surface of microsphere adsorbed aniline hydrochloride, polyaniline coated polystyrene by using chemical polymerization that obtained core-shell structure, the microspheres which had different concentrations showed different electrode in the cyclic voltammetry process. This realized that low concentrations major showed diffusion and high concentrationmainly as the main adsorption.Since hemin have similar nature with hemoglobin, it easily combined with CO. because the surface of microspheres contained carboxyl which combined hemin through hydrogen bonding, chemical bonding to the surface of microspheres, the electrochemical workstation study shows that hemin microspheres have current response of the CO gas. The microspheres of coating hemin was found that were suitable for model of electrochemical studies in experiment, then combined with UV spectra (UV-Vis) calculated the electrochemical reaction of height on the surface of microspheres, it was 1.43nm.Because the surface of microspheres contained carboxyl, microspheres easily combine with metal ions and oxidant added to its solution, has been the CeO2 surface with nano-particles, a single-phase crystalline CeO2 was obtained by X-ray diffraction (XRD) and the high-resolution transmission electron microscopy (HRTEM ).After the microsphere that surface adsorbed metal ion was modified on conductive glass. After the surface of ITO treated with high temperature, the porous oxide was obtained, and the size of the hole was close to the diameter of microspheres.