Journal of Applied Polymer Science, Vol.99, No.4, 1919-1927, 2006
4-Acetamidophenyl acrylate copolymers with acrylonitrile and N-vinyl-2-pyrrolidone: Synthesis, characterization, and reactivity ratios
4-Acetamiclophenyl acrylate (APA) was synthesized and characterized by IR, H-1 and C-13 NMR spectroscopies. Homo- and copolymers of APA with acrylonitrile (AN) and N-vinyl-2-pyrrolidone (NVP) were prepared by a free radical polymerization. All the copolymer compositions have been determined by 1H NMR technique, and the reactivity ratios of the monomer pairs have been evaluated using the linearization methods Fineman-Ross, Kelen-Tudos, and extended Kelen-Tudos. Nonlinear error-in-variable model (EVM) method was used to compare the reactivity ratios. The reactivity ratios for copoly(APA-AN) system were APA(r(1)) = 0.70 and AN(r(1)) = 0.333, and for copoly(APANVP) system the values were APA(r(1)) = 4.99 and NVP(r(1)) 0.019. Thermal stability and molecular weights of the copolymers are reported. (c) 2005 Wiley Periodicals, Inc.
Keywords:4-acetamidophenyl acrylate;acrylonitrile;N-vinyl-2-pyrrolidone;reactivity ratios;H-1 and C-13 NMR