Title

WATER-SOLUBLE COPOLYMERS .48. REACTIVITY RATIOS OF N-VINYLFORMAMIDE WITH ACRYLAMIDE, SODIUM ACRYLATE, AND N-BUTYL ACRYLATE

Document Type

Article

Publication Date

9-13-1993

Department

Polymers and High Performance Materials

Abstract

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.

Publication Title

MACROMOLECULES

Volume

26

Issue

19

First Page

5249

Last Page

5252