Synthesis and Molecular-Weight Characteristics of N-Oxidized Copolymers of N-Vinylpyrrolidone and 2-Methyl-5-Vinylpyridine.

Aseries of N-oxides of N-vinylpyrrolidone and 2-methyl-5-vinylpyridine copolymers with various degrees of oxidation were prepared via oxidation of the copolymers by peracetic acid. The N-oxidation kinetic rate constants were calculated using UV spectrophotometry. The temperature dependence of the limiting N-oxidation was determined. The molecular-weight characteristics of the N-oxidized copolymers were established using C NMR methods. An approach based on direct UV spectrophotometry was proposed for practical monitoring of the reaction completion (degree of conversion). [ABSTRACT FROM AUTHOR]