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Polypyrrole synthesis via carboxymethylcellulose-iron complexes

Bioresources, 2010-11, Vol.5 (4), p.2348-2361 [Peer Reviewed Journal]

ISSN: 1930-2126 ;EISSN: 1930-2126 ;DOI: 10.15376/biores.5.4.2348-2361

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  • Title:
    Polypyrrole synthesis via carboxymethylcellulose-iron complexes
  • Author: Sasso, Claudia ; Beneventi, Davide ; Zeno, Elisa ; Chaussy, Didier ; Petit-Conil, Michel ; Nortier, Patrice ; Belgacem, Naceur
  • Subjects: Carboxymethyl cellulose ; Complexes ; Iron speciation ; Polypyrrole
  • Is Part Of: Bioresources, 2010-11, Vol.5 (4), p.2348-2361
  • Description: Polypyrrole (PPy) was chemically synthesised at two pH levels (pH = 2 and unadjusted pH, i.e. 6.6) using pre-formed carboxymethylcellulose-iron (CMC-Fe) complexes. The CMC-Fe complexes were prepared at a fixed CMC concentration, i.e. 5.5x10-5 mol/L, and with an increasing FeCl3 amount (from 4x10-3 to 5x10-2 mol/L). The quantity of iron bound to CMC was determined by the inductively coupled plasma (ICP-MS) method. In order to understand the interactions between CMC and iron, speciation of the systems was simulated by Phreeqc software. SEM analysis showed that, in some conditions (particularly at pH = 2), Py polymerised within the CMC-Fe complexes, forming particles with size ranging between 300 and 600 nm. In order to evaluate polymer electric conductivity, films were prepared by direct casting of the PPy-CMC-Fe dispersions with and without addition of film-forming CMC, and bulky PPy-CMC-Fe pellets were obtained by compression. Despite the different arrangement PPy-CMC-Fe particles in dry films, the amount of iron bound to CMC during the formation of CMC-Fe complexes was found to be the dominant parameter affecting polymer conductivity.
  • Publisher: North Carolina State University
  • Language: English
  • Identifier: ISSN: 1930-2126
    EISSN: 1930-2126
    DOI: 10.15376/biores.5.4.2348-2361
  • Source: GFMER Free Medical Journals
    ROAD: Directory of Open Access Scholarly Resources
    DOAJ Directory of Open Access Journals
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