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- Title
Polypyrrole-modified starch films: structural, thermal, morphological and electrical characterization.
- Authors
Vasques, Caroline T.; Domenech, Susana C.; Barreto, Pedro L. M.; Soldi, Valdir
- Abstract
Starch films were obtained by incorporating sorbitol and FeCl3.6H2O by casting. The films were exposed to pyrrole vapors to promote polymerization. PPy/starch films were characterized by rheology, elemental analysis, electrical dc conductivity measurements, X-Ray diffraction, thermogravimetry, SEM and FTIR. Optimal synthesis conditions were obtained with starch films containing 5 % w/w of FeCl3.6H2O and 10 h of exposure to pyrrole vapors. The method allowed obtaining smooth, homogeneous films, with electrical conductivity values up to ca. 3.5 × 10-6 S.cm-1. The results suggest that a complex of starch and ferric chloride is formed properties of which are not influenced by the presence of polypyrrole. No chemical interactions were observed between polypyrrole and starch in the film.
- Subjects
POLYMERIZATION; PYRROLES; STARCH; FERRIC chloride; THIN films; ELECTRIC conductivity; CHEMICAL reactions; THERMAL analysis
- Publication
e-Polymers, 2010, p1
- ISSN
1618-7229
- Publication type
Article