Water-Soluble Copolymers .48. Reactivity Ratios of N-Vinylformamide with Acrylamide, Sodium Acrylate, and N-Butyl Acrylate
Polymers and High Performance Materials
Copolymers of N-vinylformamide (NVF) with acrylamide (AM), sodium acrylate (NA), and n-butyl acrylate (BA) have been prepared by free-radical polymerization in homogeneous solutions. Copolymer compositions were obtained by C-13 NMR. Reactivity ratios and microstructures of the resulting copolymers were determined. The reactivity ratios calculated by the method of Kelen-Tudos for NVF (M1)/AM (M2) were r1 = 0.046 and r2 = 0.51; for NVF (M1)/Na (M2), r1 = 0.22 and r2 = 0.52; and for NVF (M1)/BA (M2), r1 = 0.071 and r2 = 0.55. Microstructural data calculated by the method of Igarashi indicated that all three copolymer series exhibit high degrees of alternation.
Kathmann, E. E.,
McCormick, C. L.
(1993). Water-Soluble Copolymers .48. Reactivity Ratios of N-Vinylformamide with Acrylamide, Sodium Acrylate, and N-Butyl Acrylate. Macromolecules, 26(19), 5249-5252.
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