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Assignment of finely resolved 13 C NMR spectra of poly(vinyl acetate)
Author(s) -
Katsuraya Kaname,
Hatanaka Kenichi,
Matsuzaki Kei,
Yamaura Kazuo
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20000601)21:10<697::aid-marc697>3.0.co;2-2
Subject(s) - vinyl acetate , polymer chemistry , nmr spectra database , materials science , spectral line , chemistry , polymer science , polymer , organic chemistry , copolymer , physics , astronomy
13 C NMR spectra of two poly(vinyl acetate)s (PVAC) with different tacticities (r‐diad, 0.54 and 0.57) were measured, and their peak intensities were compared with the calculated ones. The methine carbon signals were assigned with pentads in the order of mmmm, mmmr + rmmr, rmrr + mmrr, rrrr, mmrm, rmrm, mrrr, mrrm from low field. The methylene carbon signals were assigned with tetrads (partly with hexads) as rmr, rrr(mrrrm, mrrrr, ), mmr + mrr, mrm and mmm from low field. Some assignments are different from those previously reported. The methyl carbon signals showed splittings which were partly assigned.