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Precise Synthesis of Star‐Branched Polymers by Means of Living Anionic Polymerization Using 1,1‐Bis(3‐chloromethylphenyl)ethylene
Author(s) -
Hirao Akira,
Higashihara Tomoya
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200451106
Subject(s) - ethylene , polystyrene , polymer , living anionic polymerization , polymer chemistry , anionic addition polymerization , materials science , polymerization , star polymer , polymer science , chemistry , organic chemistry , catalysis , composite material
The syntheses of three‐ and four‐arm star‐branched polymers by a new convenient methodology using 1,1‐bis(3‐chloromethylphenyl)ethylene are described. The methodology involves only two sets of reactions: an addition reaction of living anionic polymer to 1,1‐bis(3‐chloromethylphenyl)ethylene and a linking reaction of the intermediate polymer anion with ω‐4‐bromobutyl‐functionalized polymer. All combinations of well‐defined three‐ and four‐arm stars comprised of polystyrene and polyisoprene segments were successfully synthesized by this methodology.