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Living coordination polymerization of end‐allenyloxy poly(ethylene glycol) macromonomer by a π‐allylnickel catalyst
Author(s) -
Taguchi Masanori,
Tomita Ikuyoshi,
Yoshida Yasuhiko,
Endo Takeshi
Publication year - 2000
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20000601)201:10<1025::aid-macp1025>3.0.co;2-l
Subject(s) - macromonomer , copolymer , polymer chemistry , polymerization , ethylene oxide , ethylene glycol , living polymerization , polymer , coordination polymerization , end group , chemistry , materials science , anionic addition polymerization , radical polymerization , organic chemistry
The living coordination polymerization of end‐allenyloxy poly(ethylene oxide)s ( 2A – 2C ) was carried out by [(η 3 ‐allyl)NiOCOCF 3 ] 2 ( 1 ) in the presence of PPh 3 to produce narrowly dispersed polyallenes bearing poly(ethylene oxide) side chains. For instance, the polymerization of 2B (M n = 590, [ 2 ]/[ 1 ] = 100) proceeded smoothly to give a polymer (M n = 39 800, M w /M n = 1.13) in high yield. The molecular weight of poly( 2 ) could be controlled by the ratio of 2 to 1 and by the molecular weight of 2 . The block copolymers of 2B with various alkoxyallenes ( 3A – 3C ) or with 1‐phenylethyl isonitrile ( 3D ) were also obtained by the two‐stage copolymerization process (i. e., the polymerization of 2 , followed by that of 3A – 3D ). The resulting block copolymers were found to serve as polymeric surfactants in the polymer blend systems of PSt and PMMA.