Abstract
Copolymers of N-vinylformamide (NVF) with acrylamide (AM), sodium acrylate (NA), and n-butylacrylate (BA) have been prepared by free-radical polymerization in homogeneous solutions. Copolymer compositions were obtained by 13 C NMR. Reactivity ratios and microstructures of the resulting copolymers were determined. The reactivity ratios calculated by the method of Kelen-Tudos for NVF (M 1 )/AM (M 2 ) were r 1 = 0.046 and r 2 = 0.51; for NVF (M 1 )/Na (M 2 ), r 1 = 0.22 and r 2 = 0.52; and for NVF (M 1 )/BA (M 2 ), r 1 = 0.071 and r 2 = 0.55
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