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Polypyrrole films formation by square waves in NaClO 4 aqueous medium: Consecutive potential steps study
Author(s) -
Fernándezotero T.,
De Larreta E.,
Tejada R.
Publication year - 1988
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19880200160
Subject(s) - polypyrrole , anode , polarization (electrochemistry) , materials science , electrochromism , electrosynthesis , aqueous solution , conductive polymer , electrode , polymer , polymerization , electrochemistry , chemical engineering , composite material , chemistry , organic chemistry , engineering
The electrosynthesis of polypyrrole films was devised by consecutive potential steps. The time of each anodic and cathodic step, the number of consecutive steps, and the anodic potential of polarization influence the structure of the obtained polymer film, its adherence to the metal electrode and its electrochromic answer. Larger anodic polarization times (per step) give a polymer film formed by dendrites. Shorter anodic polarization times (per step) give smooth and adherent films. Darker colours were obtained when the number of polymerization potential steps increases.