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Sequencing of N ‐vinyl‐2‐pyrrolidone/glycidyl methacrylate copolymers by one‐dimensional and two‐dimensional nuclear magnetic resonance spectroscopy
Author(s) -
Brar A. S.,
Kumar Rajeev
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10186
Subject(s) - copolymer , glycidyl methacrylate , spectroscopy , monomer , nuclear magnetic resonance spectroscopy , polymer chemistry , methacrylate , materials science , heteronuclear molecule , nmr spectra database , nuclear overhauser effect , two dimensional nuclear magnetic resonance spectroscopy , polymerization , reactivity (psychology) , spectral line , chemistry , analytical chemistry (journal) , stereochemistry , polymer , organic chemistry , physics , medicine , alternative medicine , pathology , quantum mechanics , astronomy
Copolymers of N ‐vinyl‐2‐pyrrolidone (V) and glycidyl methacrylate (G) monomers of different compositions were prepared by free‐radical solution polymerization. The copolymer composition of these copolymers was determined with 1 H‐NMR spectra. The reactivity ratios calculated from the Kelen–Tudos and nonlinear least‐square error‐in‐variable methods were r V = 0.03 ± 0.01 and r G = 5.05 ± 0.84 and r V = 0.02 and r G = 4.72, respectively. The triad sequence distribution in terms of V and G centered triads was determined from 13 C{ 1 H}‐NMR spectroscopy. The complete spectral assignment of 13 C{ 1 H}‐ and 1 H‐NMR spectra was performed with the help of distortionless enhancement by polarization transfer and two‐dimensional 13 C– 1 H heteronuclear single quantum coherence. The 1 H– 1 H couplings were explained with total correlation spectroscopy and nuclear Overhauser enhancement spectroscopy spectra. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 50–60, 2002; DOI 10.1002/app.10186