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Synthesis and styrene copolymerization of novel trisubstituted ethylenes: 11. Halogen ring-substituted propyl 2-cyano-3-phenyl-2-propenoates.
- Source :
- Journal of Macromolecular Science: Pure & Applied Chemistry; 2018, Vol. 55 Issue 10, p709-717, 9p, 2 Diagrams, 2 Charts, 6 Graphs
- Publication Year :
- 2018
-
Abstract
- Novel trisubstituted ethylenes, ring-substituted propyl 2-cyano-3-phenyl-2-propenoates, RPhCH=C(CN)CO<subscript>2</subscript>C<subscript>3</subscript>H<subscript>7</subscript> (where R is 4-chloro-3-fluoro, 2-fluoro-5-iodo, 2-fluoro-6-iodo, 2-trifluoromethyl, 3-trifluoromethyl, 4-trifluoromethyl, 2-trifluoromethoxy, 3-trifluoromethoxy, and 4-trifluoromethoxy) were prepared and copolymerized with styrene. The ethylenes were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and propyl cyanoacetate and characterized by CHN analysis, FTIR, <superscript>1</superscript>H and <superscript>13</superscript>C 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 FTIR, <superscript>1</superscript>H and <superscript>13</superscript>C NMR. Decomposition of the copolymers in nitrogen (TGA) occurred in two steps, first in the 250-500 °C range with residue (0.5-3.1% wt.), which then decomposed in the 500-700 °C range. [ABSTRACT FROM AUTHOR]
- Subjects :
- STYRENE
COPOLYMERIZATION
ALKENES
FOURIER transform infrared spectroscopy
COPOLYMERS
Subjects
Details
- Language :
- English
- ISSN :
- 10601325
- Volume :
- 55
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of Macromolecular Science: Pure & Applied Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 134346366
- Full Text :
- https://doi.org/10.1080/10601325.2018.1526639