Copolymers of N-vinylcarbazole (M1) and N,N-dimethylaminoethyl acrylate (M2) were prepared by free radical polymerization in toluene or DMF solution at 60°C, using 2,2 0 -azobisisobutyronitrile (AIBN) as initiator. The reactivity ratios of both the monomers were determined by the extended Kelen–Tüdös method and found to be r1 0.52 ^ 0.05, r2 0.56 ^ 0.05 (in toluene) and r1 0.44 ^ 0.04, r2 0.18 ^ 0.03 (in DMF). Copolymers prepared in toluene were also characterized by UV and 1H-NMR sepctroscopy, viscosity and number- average molecular weight measurements and glass transition temperature determinations. The solvent effect on copolymer composition and microstructure is discussed.
Посилання на статтю:
Synthesis and characterization of copolymers of N-vinylcarbazole and N,N-dimethylaminoethyl acrylate / I. Sideridou-Karayannidou, G. Seretoudi // Polymer. – 1999. – N 40. – P. 4915–4922.