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Polyisoprene and polybutadiene samples, prepared from the respective monomers using lanthanide‐based catalysts, have been analyzed in terms of microstructure, glass transition temperatures and stabilities to thermo‐oxidative degradation. Quantitative determination of 1,4‐cis/trans, 1,2‐ and 3,4‐contents have been made from the IR spectra of the polymers. Attempts to use 1H and 13C NMR and Raman spectroscopy to analyze the microstructure of the materials has at best proved only partially successful. TGA and IR spectroscopy have been used to study the influence of catalyst residue on the thermo‐oxidative degradation of the polymers.
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Iovu et al. (1996) studied this question.
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