Several alternating and semi-alternating copolymers were analysed by quaternary 13C n.m.r. spectroscopy. The aromatic 'next to polymer chain’ carbon (C7) of donor monomer (1) units is sensitive to the unit 1-centred triad sequence distribution. The acceptor monomer is referred to as 0. The chemical shifts of the non-alternating (111), semi-alternating (011 þ 110) and alternating (010) triad sub-peaks were assigned in ppm in Table 1.
Посилання на статтю:
Polymer Communication Determination of triad sequence distribution of copolymers of maleic anhydride and its derivates with donor monomers by 13C n.m.r. spectroscopy / Nguyen T. Hieu Ha // Polymer. – 1999. – N 40. – P. 1081–1086.