BOWL-SHAPED POLY(3,4-ETHYLENEDIOXYTHIOPHENE)/γ-Fe_2O_3 COMPOSITES WITH ELECROMAGNETIC FUNCTION

• 作 者: 张志明 Yue Wang Qiong Li Liang-min Yu Jadranka Travas-Sejdic Li-juan Zhang
• 机 构: Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,College of Chemistry
• 出 处: Chinese Journal of Polymer Science
• 发表日期: 2013年03期
• 关键词: PEDOT polymerization shaped oxidant ammonia conducting monomer magnetization sph

In this paper, electromagnetic poly(3,4-ethylenedioxythiophene)/γ-Fe2O3 (PEDOT/γ-Fe2O3 ) micro-bowls, 1 2 μm in diameter, were prepared by a simple environment-friendly process. In this method, the aqueous solution of cetyltrimethylammonium bromide (CTAB) instead of any organic solvent was used. FeCl3 acted as a source of Fe Ⅲ for the formation of γ-Fe2O3 and as an oxidant for the polymerization of 3,4-ethylenedioxythiophene (EDOT). The bowl-shaped morphology of PEDOT/γ-Fe2O3 composites was strongly influenced by the concentration of CTAB, FeCl2 , ammonia solution and the reaction temperature. The saturation magnetization of PEDOT/γ-Fe2O3 micro-bowls increased with the increase of FeCl2 concentration and reached 6.20 Am2 /kg at the FeCl2 concentration of 0.30 mol/L. The conductivity of the PEDOT/γ-Fe2O3 composites was in the range of 101 S/cm. The electrical and magnetic sources of PEDOT/γ-Fe2O3 micro-bowls were confirmed by SEM-EDX, TEM, XRD and XPS spectra. And the possible formation mechanism of PEDOT//γ-Fe2O3 was proposed.

In this paper, electromagnetic poly (3,4-ethylenedioxythiophene) / γ-Fe2O3 (PEDOT / γ-Fe2O3) micro-bowls, 1 2 μm in diameter, were prepared by a simple environment- solution of cetyltrimethylammonium bromide (CTAB) instead of any organic solvent was used. FeCl3 acted as a source of Fe III for the formation of γ-Fe2O3 and as an oxidant for the polymerization of 3,4-ethylenedioxythiophene (EDOT). The bowl- The morphology of PEDOT / γ-Fe2O3 composites was strongly influenced by the concentration of CTAB, FeCl2, ammonia solution and the reaction temperature. The saturation magnetization of PEDOT / γ-Fe2O3 micro-bowls increased with the increase of FeCl2 concentration and reached 6.20 Am2 / kg at the FeCl2 concentration of 0.30 mol / L The conductivity of the PEDOT / γ-Fe2O3 composites was in the range of 101 S / cm. The electrical and magnetic sources of PEDOT / γ-Fe2O3 micro-bowls were confirmed by SEM -EDX, TEM, XRD and XPS spectra. And the possible formation mechanism of PEDOT // γ-Fe2O3 was proposed.