The  1 H and  13 C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt | Zendy

Komber Hartmut | Zendy

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The 1 H and 13 C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt

Author(s) -

Komber Hartmut

Publication year - 1995

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.1995.021960222

Subject(s) - maleic anhydride , copolymer , sodium salt , polymer chemistry , chemistry , salt (chemistry) , polymer , carbon 13 nmr , nmr spectra database , diastereomer , maleic acid , proton nmr , spectral line , organic chemistry , inorganic chemistry , physics , astronomy

The 1 H and 13 C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt were reinvestigated with regard to the signals depending on the configuration of the succinyl unit. From these assignments a 85/15 ratio of threo ‐and erythro ‐ succinyl configurations was determined. Threo ‐ and erythro ‐units are statistically distributed. Furthermore, signal splittings were observed due to microtacticity. Explanations are given for the signal fine structure. The polymer chain is atactic but a small degree of stereoregularity can be proved. T 1 values and nuclear Overhauser effect (NOE) factors were determined; they correspond to investigations on other polymers.

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