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Effects of inorganic oxides on polymer binder burnout. I. Poly(vinyl butyral)

✍ Scribed by Aurobindo Nair; Robert L. White

Book ID: 102655011
Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 726 KB
Volume: 60
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19960613)60:11<1901::aid-app14>3.0.co;2-3

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✦ Synopsis

The effects of silica, mullite, a-alumina, and y-alumina on the nonoxidative thermal degradation of poly(viny1 butyral) are described. To varying degrees, all of the inorganic oxides catalyzed reactions that produced butanal. Other significant products included water, butenal, acetic acid, and alkyl aromatics. Two distinct evolution steps were detected for samples containing mullite and a-alumina, suggesting that multiple interactions existed between these oxides and the polymer. The relative amounts of volatile aromatic products evolved by heating polymer/oxide samples were greater than the amounts generated from the neat polymer. For the polymerly-alumina sample, carboxylate species were detected on oxide surfaces above 250°C, indicating that a reaction between the polymer and y-alumina occurred.

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