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Electropolymrization and physicochemical properties of polypyrrole p ‐toluenesulfonate
Author(s) -
Heo Gweon,
Lee Dong Hoon,
Kim Keu Hong
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070540703
Subject(s) - thermogravimetric analysis , polypyrrole , cyclic voltammetry , sulfonate , acetonitrile , differential scanning calorimetry , electrolyte , tetraethylammonium , chemistry , polymer chemistry , electrochemistry , polymer , analytical chemistry (journal) , materials science , polymerization , organic chemistry , electrode , thermodynamics , physics , sodium , potassium
Polypyrrole p ‐toluenesulfonate (PPTS) polymers were synthesized by the electrochemical technique from 0.2M pyrrole in 0:100, 1:99, 5:95, and 10:90 water/acetonitrile solutions containing 0.1M tetraethylammonium p ‐toluene sulfonate (TEATS) as a supporting electrolyte. Following the cyclic voltammetry measurements, the number of electrons involved in the reaction was determined to be unity. The results of thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) showed that the weight loss was most reapid in the temperature range from 533 K to 768 K, and the maximum value of the reaction rate was 0.27 mg/min at 651 K. From the temperature dependence of the electrical condutivity and electron spin responance (ESR) measurement, a small pallaron hopping conduction was suggested for PPTS polymers. © 1994 John Wiley & Sons, Inc.