Novel copolymers of vinyl acetate. 2. Oxy ring-substituted ethyl 2-cyano-3-phenyl-2-propenoates
Year: 2021
Type: preprint
Abstract: Novel copolymers of vinyl acetate and oxy ring-substituted ethyl 2-cyano-3-phenyl-2-propenoates, RPhCH=C(CN)CO2C2H5 (where R is 2-methoxy, 3-methoxy, 4-methoxy, 2-ethoxy, 4-ethoxy, 4-propoxy, 4-butoxy, 2,3-dimethoxy, 2,4-dimethoxy, 2,5-dimethoxy, 3,4-dimethoxy, 2,3,4-trimethoxy, 2,4,5-trimethoxy, 2,4,6-trimethoxy, 3,4,5-trimethoxy) were prepared in solution with radical initiation at 70C. The propenoates were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and ethyl cyanoacetate, and characterized by CHN analysis, IR, 1H and 13C-NMR. The compositions of the copolymers were calculated from nitrogen analysis and the structures were analyzed by IR, 1H and 13C-NMR. Thermal behavior of the copolymers was studied by DSC (Tg) and TGA. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 160-350ºC range with residue (2.2-25.3 wt%), which then decomposed in the 500-650ºC range.
Source: ChemRxiv
Authors: Lisa Barilla, Terry L. Bogatay, Joy A. Davis, James R. Fienberg, Christopher E. Jensen, Karen S. Johnson, Poonam K. Kahlon, Meeah Loveless, Karim N. Sajwani, Maria A. Tsarpralis, Amy T. Stevens, Peter Tessalee, Christopher M. Varona, Thanarat Viriyakul, Elizabeth A. Wadey, Michael L. Wills, Emily E. Wroblewski, Gregory B Kharas
Institution: DePaul University
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4200303007