Effect of the substituents on radical copolymerization of dialkyl fumarates with some vinyl monomers
Authors:
- 1 July 1992
- journal article
- research article
- Published by Wiley in Journal of Polymer Science Part A: Polymer Chemistry
- Vol. 30 (8) , 1559-1565
Abstract
Radical copolymerization of dialkyl fumarates (DRF) with various vinyl monomers was carried out in benzene at 60°C. The monomer reactivity ratios, r1 and r2, were determined from the comonomer‐copolymer composition curves. The relative reactivity of DRFs with various ester substituents toward a polystyryl radical was revealed to depend on both steric and polar effects of the ester groups. It has also been clarified that α‐substituents of the polymer radical have a significant role in addition of DRF, from the comparison of the monomer reactivity ratios determined in copolymerizations with monosubstituted and 1,1‐disubstituted ethylenes. The absolute cross‐propagation rate constants were also evaluated and discussed. © 1992 John Wiley & Sons, Inc.Keywords
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