Summary
The cross and direct polarization NMR in solid state was employed to study crosslinked polyesters. It was demonstrated that direct-polarization solid state NMR spectra provide an evidence for the presence of residual styrene. In cross-polarization solid state NMR experiment styrene is discriminated against due to its high mobility at ambient temperature.
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Zhukov, I., Grobelny, J. A possibility of direct observation of residual styrene in crosslinked polyesters by solid state13C NMR methods. Polymer Bulletin 29, 219–223 (1992). https://doi.org/10.1007/BF00558060
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DOI: https://doi.org/10.1007/BF00558060