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Mechanism of the polymerization of trifluoroacetaldehyde initiated by azobisisobutyronitrile

✍ Scribed by Busfield, W. K. ;Humphrey, R. W.

Book ID: 104535481
Publisher: Wiley (John Wiley & Sons)
Year: 1970
Tongue: English
Weight: 588 KB
Volume: 8
Category: Article
ISSN: 0449-296X
DOI: 10.1002/pol.1970.150081017

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✦ Synopsis

Abstract

The polymerization of fluoral initiated by the photolyzed decomposition of azobisisobutyronitrile at low temperature has been studied. Up to 2% conversion, the effect of radical scavengers and the order with respect to initiator and light intensity indicate that the reaction occurs by a conventional radical polymerization mechanism. At about 2% conversion autoacceleration sets in and the rates become irreproducible. This is explained by typical occlusion phenomena. Tracer studies show that polymer prepared at high conversion contains initiator fragments indicating that primary propagation is by monomer addition to radicals. The reaction mechanism is discussed.

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