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Home  >  Journal list  >  Polymer Journal  >  Vol.14  No.5 (1982)  >  pp.343-346

Polymer Journal
<<Previous article Vol.14  No.5 (1982)   pp.343 - 346 Next article>>

Stereosequence Distributions of Poly(t-butyl methacrylate)s Prepared with Butyllithium

Toshimitsu Suzuki1), Osamu Yamada1), Yoshihisa Watanabe1) and Yoshinobu Takegami1)
1) Department of Hydrocarbon Chemistry, Faculty of Engineering, Kyoto University

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.


Keyword:
13C NMR/ Poly(t-butyl methacrylate)/ Microtacticity/ Anionic Polymerization/ Butyllithium

Published online: March 03, 2006
© Copyright, 2006 by The Society of Polymer Science, Japan

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