Abstract
13C NMR spectra of poly(t-butyl methacrylate)s (PBMA) prepared with butyllithium (n-BuLi) were studied. Methylene carbon resonances appeared as five overlapped peaks, which were interpreted as a combination of hexad stereosequence distributions. The stereosequence distribution of PBMA prepared with n-BuLi at −78°C obeyed the first order Markov chain model even polymerized in tetrahydrofuran (THF). Syndiotactic PBMA was obtained with azobisisobutyronitrile (AIBN) as the initiator, and the stereosequence distribution of this polymer agreed well with Bernoullian statistics.
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Suzuki, T., Yamada, O., Watanabe, Y. et al. Stereosequence Distributions of Poly(t-butyl methacrylate)s Prepared with Butyllithium. Polym J 14, 343–346 (1982). https://doi.org/10.1295/polymj.14.343
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DOI: https://doi.org/10.1295/polymj.14.343