G. Kharas, J. Bates, Alex T. Boyd
Apr 27, 2017
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0
Influential Citations
6
Citations
Journal
Journal of Macromolecular Science, Part A
Abstract
ABSTRACT Novel trisubstituted ethylenes, ring-disubstituted propyl 2-cyano-3-phenyl-2-propenoates, RPhCH = C(CN)CO2C3H7 (where R is 2-bromo-4-methyl, 2-chloro-6-methyl, 3-chloro-4-methyl, 2,5-dibromo, 3,5-dibromo, 2,3-dichloro, and 2,4-dichloro) were prepared and copolymerized with styrene. The monomers were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and propyl cyanoacetate and characterized by CHN elemental analysis, IR, 1H and 13C-NMR. All the ethylenes were copolymerized with styrene in solution with radical initiation (ABCN) at 70°C. The composition of the copolymers was calculated from nitrogen analysis, and the structures were analyzed by IR, 1H and 13C-NMR, GPC, DSC, and TGA. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 200-500°C range with residue (7-12% wt.), which then decomposed in the 500-800°C range.