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Thermal degradation of poly(vinylpyridine)s
Date
2009-04-01
Author
Elmaci, Ayşegül
Hacaloğlu, Jale
Metadata
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The thermal stability and the temperature at which maximum degradation yields are detected were quite similar for both poly(2-vinylpyridine) (P2VP) and poly(4-vinylpyridine) (P4VP). However, considerable differences among the thermal degradation products of both polymers were detected indicating a correlation between the polymer structure and the degradation mechanism. Direct pyrolysis mass spectrometry analyses revealed that P2VP degrades via a complex degradation mechanism, yielding mainly pyridine, monomer, and protonated oligomers, whereas depolymerization of P4VP takes place in accordance with the general thermal behaviour of vinyl polymers. The complex thermal degradation behaviour for P2VP is associated with the position of the nitrogen atom in the pyridine ring, with sigma-effect.
Subject Keywords
Poly(vinylpyridine)
,
Thermal degradation
,
Pyrolysis
,
Mass spectrometry
URI
https://hdl.handle.net/11511/31920
Journal
Polymer Degradation and Stability
DOI
https://doi.org/10.1016/j.polymdegradstab.2008.12.016
Collections
Graduate School of Natural and Applied Sciences, Article