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IJCT Vol.12(2) [March 2005] >


Title: Light induced electropolymerization of aniline
Authors: Das, Ishwar
Gupta, Sujeet Kumar
Lall, R S
Keywords: Electropolymerization
aniline
TG
XRD
mass spectra
Issue Date: Mar-2005
Publisher: CSIR
IPC CodeC07C211/46; C08F2/58
Abstract: Electropolymerization of aniline has been carried out in the presence of light. The kinetics of polymer growth has been studied in terms of weight of the aggregate as a function of time in the absence and presence of ZnSO4 and found that zinc sulphate inhibited the polymer growth by incorporating itself in the polymer network. An empirical equation w = cemt was obeyed in acid-aniline system while a different equation w12 = m1t + c was obeyed when zinc sulphate was admixed. It indicated that a different mechanism is operative for the polymerization of aniline in the presence of zinc sulphate in acid-aniline system. TG studies reveal that zinc sulphate increases the stability of the polymer. The aggregates were characterized by IR, FAB mass, TG and XRD studies. Analysis of mass spectra shows the possibility of cross linked fragments in the polymer. Oscillatory characteristics have been studied in HCl-aniline system and its dependence on light of different wavelengths, zinc sulphate, applied potential, aniline, HCl and acetonitrile concentrations has also been studied. Polymerization was found to be reduced by 70% in complete darkness.
Page(s): 198-204
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.12(2) [March 2005]

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