Synthesis and electrical properties of polyaniline/iota-carrageenan biocomposites

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• 作者：Alejandro Vega-Rios ; Jorge L. Olmedo-Mart&iacute ; nez ; B&aacute ; rbara Far&iacute ; as-Mancilla ; Claudia A. Hern&aacute ; ndez-Escobar ; E. Armando Zaragoza-Contreras ; ^{armando.zaragoza@cimav.edu.mx" class="auth_mail}
• 关键词：Biocomposite ; Carrageenan ; Electro-activity ; Polyaniline
• 刊名：Carbohydrate Polymers
• 出版年：22 September 2014
• 年：2014
• 卷：110
• 期：Complete
• 页码：78-86
• 全文大小：2065 K

文摘

Polyaniline/iota-carrageenan (喂-CGN) biocomposites were synthesized <em>via in situem> methodology using ammonium persulfate as the oxidizing agent. Both ionic (band at 1131 cm⁻¹) and hydrogen bond (bands at 2500 and 3500 cm⁻¹) interactions between polyaniline and 喂-CGN were determined by infrared spectroscopy. Such intermolecular interactions provided the biocomposites with a cross-linked structure that provided the materials with hydrogel behavior. Biocomposite electro-conductivity, determined by the 4-probe technique, was in the range of semiconductors (10⁻³ to 10⁻² S cm⁻¹); whereas electro-activity, assessed by cyclic voltammetry, showed the oxidation–reduction transitions typical of polyaniline. Based on the properties of polyaniline and 喂-CGN, some applications for the new materials in the field of biosensor design, electrochemical capacitors, or tissue engineering scaffolds are possible. It is worth saying that both electro-conductive and electro-active properties of polyaniline/喂-CGN biocomposites are reported here for the first time.