473989-26-3Relevant articles and documents
Synthesis and characterization of novel methacrylate copolymers based on sulfonamide and coumarine: Monomer reactivity ratios, biological activity, thermal stability, and optical properties
Erol, Ibrahim,Sanli, Guelay,Dilek, Meltem,Ozcan, Levent
, p. 4323 - 4334 (2010)
The free radical copolymerization of 2-oxo-2-[(4-sulfamoylphenyl)amino] ethyl-2-methylpropenoate (SAEMA) with 4-methyl-2-oxo-2H-chromen-7-yl-2- methylpropenoate (MCMA) has been carried out in 1, 4-dioxane at 65 °C ± 1 °C and the copolymers were analyzed by Fourier-transform infrared,1H-NMR,13C-NMR and gel permeation chromatography.1H-NMR and elemental analysis was used to determine the molar fractions of SAEMA and MCMA in the copolymers. The monomer-reactivity ratios were calculated according to the general copolymerization equation using Kelen-Tuedos and Fineman-Ross linearization methods. The reactivity ratios indicated a tendency toward random copolymerization. The polydispersity indices of the polymers, determined with gel permeation chromatography, suggested a strong tendency for chain termination by disproportionation. The thermal behaviors of copolymers with various compositions were investigated by differential scanning calorimetry and thermogravimetric analysis. The glass-transition temperature of the copolymers increased with increasing MCMA content in the copolymers. Also, the apparent thermal decomposition activation energies were calculated by the Ozawa method with a Shimadzu TGA 60 thermogravimetric analysis thermobalance. All the products showed moderate activity against different strains of bacteria and fungi. The photochemical properties of the polymers were investigated by UV spectra.
