An nmr study of poly(vinylidene fluoride) structure by 1h, 13c, and 19f triple resonance method

Abstract

1H, 13C, and 19F triple resonance NMR experiments on poly(vinylidene fluoride) (PVDF) in solution were carried out in order to provide a detailed primary structural analysis of PVDF. The 19F NMR signals were measured by the 1H broad-band decoupled 19F J-correlated 2D NMR and 1H舑19F J-correlated two dimensional (2D) methods, and the 13C NMR signals were measured by the 1H broad-band decoupled 19F舑13C J-correlated 2D method. On the basis of the spectral analysis, a complete primary-structural analysis of PVDF was carried out. From these results, it was demonstrated that the 1H, 13C, and 19F triple resonance NMR method is a very useful means for analysing primary-structure of fluoropolymers. © 1994, The Society of Polymer Science, Japan. All rights reserved.