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An Easy Way Toward ε ‐Caprolactone Macromonomers by Microwave Irradiation Using Early Lanthanide Halides as Catalysts
Author(s) -
BarbierBaudry Denise,
Brachais ClaireHélène,
Cretu Adina,
Loupy André,
Stuerga Didier
Publication year - 2002
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 - 10.1002/1521-3927(20020201)23:3<200::aid-marc200>3.0.co;2-g
Subject(s) - lanthanide , dispersity , catalysis , caprolactone , halide , polymer chemistry , materials science , microwave irradiation , diethylene glycol , polymer , chemistry , organic chemistry , polymerization , ethylene glycol , ion
Poly( ε ‐caprolactone) macromonomers were synthesized under microwave irradiation from commercial caprolactone, using commercial hydrated lanthanide halides as catalysts. The molecular weight of the polymers was in the range 3 000–5 000. Higher molecular weights (5 000–20 000) and lower polydispersity indices were obtained with THF adducts of the lanthanide halides as catalysts and also by applying longer reaction times or using diethylene glycol as a coupling reagent.