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- Title
Anionic Polymerization Behavior of α-Methylene- N-methylpyrrolidone.
- Authors
Ishizone, Takashi; Kitazawa, Keita; Suzuki, Takashi; Kawauchi, Susumu
- Abstract
Anionic polymerization of α-methylene- N-methylpyrrolidone ( MMP) was carried out in THF at −78∼0 °C with diphenylmethylpotassium (Ph2CHK) and with diphenylmethyllithium (Ph2CHLi) in the presence of Lewis acidic diethylzinc (Et2Zn). Poly( MMP)s possessing predicted molecular weights based on the molar ratios between monomer and initiators and narrow molecular weight distributions ( Mw/ Mn < 1.1) were obtained in quantitative yields. It was demonstrated that the propagating chain end of poly( MMP) was stable at −30 °C to form the polymers with well-defined chain structures. From the polymerizations at the various temperatures ranging from −50 to −30 °C, the apparent rate constant and the activation energy of the polymerization were estimated as follows: ln k
- Publication
Macromolecular Symposia, 2013, Vol 323, Issue 1, p86
- ISSN
1022-1360
- Publication type
Article
- DOI
10.1002/masy.201100095