Complete assignment of 1H and 13C MM spectra of methacrylonitrile/methylmethacrylate copolymers

Methacrylonitrile/methylmethacrylate (A/M) copolymers were prepared by bulk polymerization. The C-13 DEPT-135 (distortionless enhancement by polarization transfer) spectrum was used to differentiate between the carbon resonance signals of methyl, methoxy, and methylene units in the copolymers (A/M). Comonomer reactivity ratios were determined using Kelen-Tudos and non-linear error in variable methods. 2D heteronuclear single quantum correlation (HSQC) and total correlated spectroscopy (TOCSY) spectra were used to resolve the complex H-1 NMR spectrum.