Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/3949
Title: Thermal decomposition kinetics of polypyrrole and its star shaped copolymer
Authors: Ak, Metin
Cilgi, Gulbanu Koyundereli
Kuru, Ferah Dİba
Cetisli, Halil
Keywords: Activation energy
FWO
Model-free methods
Star-shaped polymers
Thermal analysis
TGA
DSC
Decomposition ratios
Model-free method
Star-shaped copolymer
Structure decomposition
Thermal behaviors
Thermal decomposition kinetics
Publisher: Springer Nature
Abstract: Thermal behavior of 2,4,6-tris(4-(1H-pyrrol-1-yl)phenoxy)-1,3,5-triazine monomer, polypyrrole, and their star shaped copolymer, were investigated using TG and DTA methods. It was found that Tria melts at 517 K and after than it starts to decompose. Decomposition proceeded in two stages which were corresponding to removal of branched groups and remaining core structure degradation, respectively. Polypyrrole and copolymer showed similar thermal behaviors. These compounds decomposed in three stages which are removal of solvent, removal of dopant anion and rest of structure decomposition. The calculation of activation energies of all reactions were realized using model-free (KAS and FWO) methods. The graphs were prepared which show the alteration of activation energy with decomposition ratio. Thermal analysis results showed that dopant anion and solvent removal activation energy values for copolymer are lower than polypyrrole. Star shaped loose-packed novel structure greatly facilitates solvent and dopant anion removal from copolymer. It can be concluded also that thermal analysis can be used as predict package structure of conducting polymers.
URI: https://hdl.handle.net/11499/3949
ISSN: 1388-6150
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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