Thermal decomposition of polystyrene-b-poly(2-vinylpyridine) coordinated to co nanoparticles |
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Authors: | Ay egü l Elmaci, Jale Hacaloglu, Ceyhan Kayran, Georgios Sakellariou,Nikos Hadjichristidis |
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Affiliation: | aChemistry Department, Middle East Technical University, Ankara 06531, Turkey;bChemistry Department, University of Athens, Athens 15771, Greece |
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Abstract: | Direct pyrolysis mass spectrometry analyses of polystyrene-block-poly(2-vinylpyridne), PS-b-P2VP, indicated that the thermal degradation of each component occurred independently through the decomposition pathways proposed for the corresponding homopolymers; depolymerization for PS and depolymerization and loss of protonated oligomers for P2VP by a more complex degradation mechanism. On the other hand, upon coordination to cobalt nanoparticles, thermal decomposition of the P2VP blocks was initiated by loss of pyridine units, leaving an unsaturated and/or crosslinked polymer backbone that degraded at relatively high temperatures. |
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Keywords: | Metal nanoparticles coordinated to block polymers Metal polystyrene-b-poly(2-vinylpyridine) Thermal degradation Pyrolysis mass spectrometry |
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