title: Synthesis and electrical properties of polyaniline/iota-carrageenan biocomposites.
abstract: Polyaniline/iota-carrageenan (ι-CGN) biocomposites were synthesized via in situ 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 ι-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 ι-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/ι-CGN biocomposites are reported here for the first time.
authors.affiliation: Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua, Chih., Mexico.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Vega-Rios
authors.affiliation: Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua, Chih., Mexico.
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Olmedo-Martínez
authors.affiliation: Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua, Chih., Mexico.
authors.forename: Bárbara
authors.initials: B
authors.lastname: Farías-Mancilla
authors.affiliation: Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua, Chih., Mexico.
authors.forename: Claudia A
authors.initials: CA
authors.lastname: Hernández-Escobar
authors.affiliation: Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua, Chih., Mexico. Electronic address: armando.zaragoza@cimav.edu.mx.
authors.forename: E Armando
authors.initials: EA
authors.lastname: Zaragoza-Contreras
mesh_terms: D000814:Aniline Compounds / Q000138:chemical synthesis* / Q000378:metabolism; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000378:metabolism; D002351:Carrageenan / Q000138:chemical synthesis* / Q000378:metabolism; D004553:Electric Conductivity
chemical_list: D000814:Aniline Compounds; D001672:Biocompatible Materials; C416807:polyaniline; D002351:Carrageenan
keywords: Biocomposite; Carrageenan; Electro-activity; Polyaniline