Abstract
In the 1H NMR spectroscopy of styrene—methyl methacrylate copolymers, relative intensity values are influenced by the effect of magnetic saturation if the effective H1 field is larger than 50 db. However, the spectra in the saturation-free condition are poor in signal-to-noise ratios. Multiscanned spectra were observed in the saturation-free condition, and the numerical data of the relative intensities from multiscanned spectra show that the copolymerization process obeys a simple Markovian process in the selection of monomer species, while it does a Bernoullian trial in the tactic placement.
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Chûjô, R., Matsuo, H. & Inoue, Y. Proton NMR Study of Copolymer Composition in Styrene—Methyl Methacrylate System under Magnetic Saturation-Free Condition. Polym J 9, 569–572 (1977). https://doi.org/10.1295/polymj.9.569
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DOI: https://doi.org/10.1295/polymj.9.569
