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The Preparation and Characterization of Conducting Polymers with Electromagnetic Function

Author: CuiZhiJie
Tutor: YuLiangMin；ZhangZhiMing
School: Ocean University of China
Course: Applied Chemistry
Keywords: Polypyrrole 3,4- polyethylene dioxy thiophene (PEDOT) Polyaniline / TiO2 Chemical one-step Electromagnetic functionalized
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 75
Quote: 1
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Abstract


Conductive polymer because of the height of the main chain conjugated structure and diversification of structure, conductivity and processability characteristics adjustable by scientists widespread concern. Conductive polymer micro / nanostructures nanostructures and nanotechnology research focus, and the conductive polymer nano-materials with inorganic nanoparticles composite conducting polymer micro / nano-structured research hotspot in the field of multi-functional . Electromagnetic functionalized conductive polymer having particular physical and chemical properties and to obtain a wide range of research. In this thesis, \Preparation of the magnetic iron oxide combine to successfully synthesized conductive polymer polymer / gamma-Fe2O3 micro / nano-structure, to solve the problem of dispersibility of magnetic nanoparticles. Primarily to obtain the following results: 1 by \The nano-composites, which greatly simplifies the experimental procedure. Found in the experimental process, the doping agent TsOH / molar ratio of pyrrole (Py) has an important influence on the morphology of the product, conductivity and magnetic. The product was uniformly dispersed micro / nanospheres having an average diameter of 140-250nm. When TsOH / Py = 2, the conductivity reached maximum value 42.86S/cm. The magnetic properties of the product decreases with the increase of the quantity of TsOH when TsOH / Py = 0.1, the maximum saturation magnetization to achieve 2.0emu / g. Other acid (perfluoro octanoic acid, trifluoroacetic acid, phosphoric acid, and acetic acid) do dopant on the morphology of the product are uniformly dispersed micro / nanospheres having an average diameter of 79 to 90nm, the conductivity in the 20 to 30 S / cm between. Electrical and magnetic properties during the reaction by the amount of change of FeCl3.6H2O reactant and FeCl2.4H2O were changed product. 2. \Found oxidant oxidation FeCl3.6H2O effect best, and the amount has a great influence on the morphology of the product and its conductivity. The amount of FeCl3.6H2O 7.58 g, successfully prepared PEDOT micro / nanostructures. The same time, the effects of different surfactants on the PEDOT micro / nanostructures found cetyl trimethyl ammonium bromide (CTAB), octyl phenol polyoxyethylene (10) ether (OP-10), naphthalene sodium (NaANS) as a surfactant, the yield of the product and the conductivity are compared with no added surfactants large, and the higher conductivity reaches of 33.8,43.5,37.8 S / cm, respectively, and by CTAB changes in the amount of ball to the dome. \Using CTAB as a surfactant to obtain a high yield of high magnetic high conductivity when the target product, its electrical conductivity and the maximum magnetization of 48.7 S / cm, respectively, and 18.8 emu / g. 3 cuprous oxide octahedral morphology as a template was successfully prepared polyaniline / TiO2 (PANI/TiO2) micro / nanospheres, TiO2 nanoparticles are evenly dispersed in the polyaniline. The different TiO2 / aniline (TiO2/AN), the molar ratio of of PANI/TiO2 complex structure, morphology and electrical properties. Experimental results show that the With increase in TiO2/AN molar ratio, diameter of PANI/TiO2 composite decreases gradually when the molar ratio TiO2/AN 0.16 composites with an average diameter of 373 nm, and when TiO2/AN molar ratio to 1.6 hours, the average diameter of the composite down to 80nm. PANI/TiO2 composite micro / nanospheres conductivity first increased and then With the TiO2/AN increasing the molar ratio decreased and to 100S/cm when TiO2/AN molar ratio of 1.6, the conductivity increased by 10-4S/cm reaches the maximum value.

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