Abstract
The thermogravimetry of a mixed polymer waste stream has been studied and the weight-loss behaviour of this heterogeneous mixture has been compared with results obtained from the weight-loss curves of some individual polymers. The results suggest that the behaviour of the mixture cannot be predicted by the simple additive behaviour of the individual polymers since interactions can occur which influence the degradation weight-loss profiles. The heterogeneous polymeric waste studied was that generated from the shredding of old discarded automobiles. The results of the study indicate that while it is possible to determine what is present in a sample, the relevance of the data to a very heterogeneous waste stream is questionable.
Zusammenfassung
Die Thermogravimetrie gemischter Polymerabfallströme wurde untersucht und das Gewichtsverlustverhalten dieser heterogenen Gemische mit den Resultaten der Gewichtsverlustkurven einiger reiner Polymere verglichen. Die Ergebnisse weisen darauf hin, daß das Verhalten des Gemisches nicht anhand eines einfachen additiven Verhaltens der Polymerkomponenten vorausgesagt werden kann, da Wechselwirkungen auftreten können, welche die Gewichtsverlustporofile der Zersetzungen beeinflussen. Der untersuchte heterogene Polymerabfall wurde durch Zerkleinerung von alten ausrangierten Automobilen gewonnen. Die Resultate der Untersuchung zeigen, daß es möglich ist, zu bestimmen, was in einer Probe enthalten ist, daß jedoch die Relevanz der Daten bei einem sehr heterogenen Abfallstrom fraglich ist.
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Issued as NRCC #37562