Living polymerization of methyl methacrylate by novel samarium-based trifunctional initiator

Authors
Narita, M Nomurat, R Tomita, I Endo, T
Citation
M. Narita et al., Living polymerization of methyl methacrylate by novel samarium-based trifunctional initiator, POLYM BULL, 45(3), 2000, pp. 231-236
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER BULLETIN
ISSN journal
01700839 → ACNP
Volume
45
Issue
3
Year of publication
2000
Pages
231 - 236
Database
ISI
SICI code
0170-0839(200010)45:3<231:LPOMMB>2.0.ZU;2-C
Abstract
A novel trifunctional samarium enolate, prepared in situ by the reduction o f 1,3,5-tris(2-bromoisobutyroyloxymethyl)benzene with SmI2, has proven to i nitiate the polymerization of methyl methacrylate (MMA). Characterization o f the polymer by H-1 NMR and GPC clearly supported the formation of a star- shaped tri-armed poly(MMA). The resulting star-shaped poly(MMA) possessed n arrow molecular weight distribution, and its molecular weight agreed well w ith the theoretical value, which reveals the quantitative initiation effici ency.