Summary
The configuration of citraconic anhydride units in p-chlorostyrene/citraconic anhydride copolymers prepared in methyl ethyl ketone at 50.0±0.1°C and the corresponding copolymer compositions and comonomer unit sequence distributions were determined over a range of comonomer feed mole fractions using 13C NMR spectroscopy. It was found that the ratio of Z (zusammen) to E (entgegen) configurations of citraconic anhydride units in these semi-alternating copolymers showed an overall tendency to increase with the degree of alternation of the monomer units.
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Brown, P.G., Fujimori, K. Determination of the configuration of citraconic anhydride units in copolymers of p-chlorostyrene with citraconic anhydride via 13C NMR spectroscopy. Polymer Bulletin 30, 641–645 (1993). https://doi.org/10.1007/BF00300031
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DOI: https://doi.org/10.1007/BF00300031