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Synthesis of star‐shaped poly(vinyl ethers) with many arms by living cationic polymerization
Author(s) -
Kanaoka Shokyoku,
Fujita Yohtaro,
Higashimura Toshinobu
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(20000301)21:5<218::aid-marc218>3.0.co;2-k
Subject(s) - living cationic polymerization , vinyl ether , cationic polymerization , polymer chemistry , polymer , ether , polymerization , star polymer , adduct , vinyl polymer , chemistry , materials science , organic chemistry , copolymer
Star‐shaped polymers of isobutyl vinyl ether (IBVE) with many arms (“crew cut” type) have been synthesized by living cationic polymerization using the HCl‐IBVE adduct/ZnCl 2 initiating system. A short living polymer ( DP n ⪇ 30) of IBVE is allowed to react with a large amount of divinyl ether ([divinyl ether] 0 /[P*] = 10–15) to give soluble star polymers whose number of arms ranged from 40 to 120. The diameter of such “crew cut” star polymers reached ca. 20 nm.