Thermal degradation of poly(vinylpyridine)s

Date

2009-04-01

Author

Elmaci, Ayşegül
Hacaloğlu, Jale

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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

Collections

Graduate School of Natural and Applied Sciences, Article