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Copolymerization of 2-hydroxyethyl methacrylate with alkylacrylates. Temperature dependence of monomer reactivity ratios

✍ Scribed by I.K. Varma; S. Patnaik

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 214 KB
Volume: 13
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(77)90111-2

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✦ Synopsis

Copolymerizations of 2-hydroxyethyl methacrylate (HEMA) with methyl acrylate, ethyl acrylate, n-butyl acrylate and methyl methacrylate were carried out in bulk at temperatures between 5@ and 90 ° using 0.2°,i, benzoyl peroxide as initiator. The copolymer compositions were determined by estimation of the hydroxyl group of HEMA in the copolymers by acetylation. The monomer reactivity ratios were determined by the Joshi-Joshi method. The Arrhenius parameters were calculated. The activation energy (El l-El 2) decreases as the alkyl group becomes bulkier in the acrylate.

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