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Synthesis of Well‐Defined Rod‐Coil‐Rod Polyhexylisocyanate‐ block ‐polystyrene‐ block ‐polyhexylisocyanate via One‐Pot Anionic Polymerization
Author(s) -
Ahn JunHwan,
Lee JaeSuk
Publication year - 2003
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/marc.200390094
Subject(s) - copolymer , polymerization , anionic addition polymerization , living anionic polymerization , polymer chemistry , polystyrene , materials science , styrene , living polymerization , ionic polymerization , isocyanate , reversible addition−fragmentation chain transfer polymerization , radical polymerization , polymer , polyurethane , composite material
A rod‐coil‐rod block copolymer, polyhexylisocyanate‐ block ‐polystyrene‐ block ‐polyhexylisocyanate, of controlled molecular weight was synthesized quantitatively via living anionic polymerization using potassium naphthalenide in the presence of sodium tetraphenylborate. The use of K + as the counterion for the polymerization of styrene, and Na + (NaBPh 4 ) for the polymerization of isocyanate leads to the formation of a well‐controlled novel triblock copolymer.