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Synthesis and Characterization and Applications of Functionalized Electromagnetic Polyaniline Composites

Author: LiHaiYin
Tutor: YangChunMing
School: Hunan Normal University
Course: Polymer Chemistry and Physics
Keywords: Polyaniline Electromagnetic functionalized Electromagnetic Loss Absorbing materials Magnetic separation
CLC: O633.2
Type: Master's thesis
Year: 2008
Downloads: 213
Quote: 2
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Abstract


The conductive polymer of the functional means is formed by some of the functional group-containing material and the conductive polymer composite of the structure type or complex-type functional material, such as the absorbing material, the membrane separation material and fine catalytic material. Polyaniline due to their preparation is simple, the environmental stability and good electrical conductivity and adjustable, is typically a dielectric loss material, through the optimization of the component designed to prepare a new absorbing materials. The requirements of the new absorbing materials have \New polyaniline-based composite absorber, become a research focus in recent years due to the above advantages. In this paper, the function of doping and composite prepared electromagnetic functionalized polyaniline composites, the electrical conductivity, magnetic susceptibility, dielectric loss and magnetic loss. By FT-IR, UV-Vis, TGA, XRD and SEM testing methods to characterize the product of their electrical conductivity, magnetic, electromagnetic microwave absorption properties. Following major elements: (1) the use of solid-phase reaction synthesis of ferrocene acid doped polyaniline, its structural characterization by FT-IR, UV-Vis, SEM characterization of its morphology, the size of the electrical conductivity and magnetic susceptibility measurements, research ferrocene acid and ferrous sulfate synergy solve ferrocene sulfonate liquid phase dopant not strong acidic. The results show that the composite material has both excellent conductivity and has a certain magnetic susceptibility. (2) emulsion and solid-phase synthesis of ferrous sulfate doped polyaniline. By FT-IR, UV-Vis, TGA, XRD and SEM means to characterize the structure and performance of the product, and the measurement of electrical conductivity, magnetic susceptibility and electromagnetic parameters. The results showed that the the Fe 2 ions with polyaniline molecular chain between the existence of a strong ligand / doped interaction. (3) using the emulsion / microemulsion method the synthetic Fe 3 O 4 / poly (styrene - vinyl benzene sulfonate) copolymer and Fe 3 O 4 / poly (styrene - vinyl benzene sulfonate) / polyaniline composite microspheres were characterized with FT-IR, SEM, XRD, VSM and HPLC and other means structure and performance. The results showed that, the composite has a certain film formation and electromagnetic absorbing performance, and provides a reference pathway for polyaniline complexes machining applications. (4) Template Synthesis of Fe 3 O 4 / polyaniline hollow sphere complexes absorbing materials using FT-IR, UV-Vis, VSM, TGA, XRD and SEM characterization of its structure and performance, and to study the electromagnetic microwave absorbing properties. The results proved that the nano four iron oxide present in the composite hollow spheres; electromagnetic parameters of the results showed that the material in the magnetic fluid content has good electromagnetic absorbing performance of their applications as radar stealth materials provides a theoretical basis.

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Miscellaneous Chain Polymers > Nitrogen-containing polymer chain
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