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Kinetic study of the polymerization of ethyl acrylate in an aqueous nitric acid medium

✍ Scribed by G. V. Ramana Reddy; J. Arun; Jayakishore Panda

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 122 KB
Volume: 99
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.22459

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✦ Synopsis

Abstract

A kinetic study of the aqueous polymerization of ethyl acrylate (EA) was carried out at 30°C in a dilute nitric acid medium with ammonium ceric nitrate (ACN)–n‐propanol (__n__PA) and ACN–ethanol as redox initiator systems. The ceric‐ion consumption was first‐order with respect to the ceric‐ion concentration with both initiator systems. The formation of complexes between Ce(IV) and reducing agents was observed. The orders with respect to the Ce(IV), reducing agents, and monomer were evaluated for aqueous polymerizations of EA initiated by Ce(IV)–__n__PA and Ce(IV)–ethanol redox initiator systems. The overall activation energy for the aqueous polymerization of EA was evaluated in the temperature region of 27–40°C with both initiator systems. A kinetic mechanism for the aqueous polymerization of EA initiated by redox initiator systems is presented. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 218–224, 2006

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