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Assignment of 13C nuclear magnetic resonance spectra of poly(methacrylonitrile)

✍ Scribed by Tokiji Kawamura; Naoki Toshima; Kei Matsuzaki

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
164 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

^13^C Nuclear magnetic resonance (NMR) spectra of atactic and syndiotactic‐rich poly(methacrylonitrile) (PMAN) were determined. In addition, 2D (^1^H‐^13^C COSY)COSY = COrrelated SpectroscopY.

NMR spectra of α‐methyl and methylene regions of atactic PMAN were measured. Values of tetrads and pentads were calculated from triads obtained from α‐methyl carbon absorptions of the samples. By comparing calculated values with the observed ones, and by taking 2D NMR spectra into consideration, both α‐methyl carbon and proton absorptions were assigned by pentads, and methylene carbon absorptions by tetrads (partly by hexads).

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