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Precise Block‐Copolymers by Efficient Coupling of End‐Functionalized Polymers Using Phosgene
Author(s) -
Cotiuga Irina,
Picchioni Francesco,
Agarwal Uday S.,
Staal Bastiaan B. P.,
Vekemans Jef A. J. M.,
Lemstra Piet J.
Publication year - 2006
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.200500744
Subject(s) - phosgene , copolymer , polymer , monomer , materials science , polymer chemistry , polymerization , anionic addition polymerization , chemistry , organic chemistry , composite material
Summary: We report the synthesis of well‐defined block copolymers by covalent coupling of hydroxy end‐functionalized polymers. Using the high volatility of the coupling agent phosgene as compared to the solvent, very high conversion (up to 96%) is obtained in a one‐pot reaction with as little as 10 −5 moles of each of the reacting polymers, even without prior purification of the as‐received reagents. This has potential as an alternative to the currently practiced method of sequential living polymerization of constituent monomers, with the added advantage of direct knowledge and control over the length distribution of each block.Coupling of end‐functionalized polymers using phosgene to form block copolymers of controlled composition.