NMR Investigation of Phenolphthalein Polyether ether ketone(Ⅰ)──The Chain Structure and Assignments of 1H, 13C NMR Lines of PEK-C

Abstract

Abstract: Amorphous samples of polyether ketone with cardo(PEK- C)have been studied in the solution state by ¹³C,¹H high-resolution NMR.The ¹H and ¹³C 1D NMR spectra were assigned using two dimensional chemical shift correlated spectroscopy.2D homonuclear correlated(COSY)and heteronuclear correlated (HETCOR)spectroscopy present important information.In this work, the structural units of PEK-Cwas determined by NMR.For some peaks, these assignments are confirmed by two dimensional long-range heteronuclear correlation experiments, Alittle modification is made on the original ¹³C peak assignments for the main chain.The symmetry and the isotacticity of the chain structure for PEK -Care obvious on NMR data.

Key words: Polyether ketone with cardo, Chain structure, 1D NMR, 2D NMR

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ZHANG Jian-Guo, PEI Feng-Kui. NMR Investigation of Phenolphthalein Polyether ether ketone(Ⅰ)──The Chain Structure and Assignments of ¹H, ¹³C NMR Lines of PEK-C[J]. Chem. J. Chinese Universities, 1996, 17(9): 1487.

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NMR Investigation of Phenolphthalein Polyether ether ketone(Ⅰ)──The Chain Structure and Assignments of ¹H, ¹³C NMR Lines of PEK-C

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