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Synthesis of end‐functionalized polymer by means of living anionic polymerization. 4. Synthesis of polyisoprene and polystyrene with epoxy termini by reaction of their anionic living polymers with 2‐bromoethyloxirane
Author(s) -
Takenaka Katsuhiko,
Hirao Akira,
Nakahama Seiichi
Publication year - 1995
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1995.210370408
Subject(s) - epoxy , polystyrene , living anionic polymerization , polymer , anionic addition polymerization , polymer chemistry , materials science , polymerization , end group , molar mass distribution , composite material
In order to synthesize ω‐epoxy‐functionalized 1,4‐polyisoprene ω‐epoxy‐ and α,ω‐diepoxy‐functionalized polystyrenes, anionic living polyisoprene and polystyrene were allowed to react with excess amounts of 2‐bromoethyloxirane in THF at −78°C. The resulting polymers were analysed by SEC, 1 H and 13 C NMR spectroscopy, and thin layer chromatography with flame ionization detection (TLC–FID). Both mono‐ and di‐epoxy terminated polymers of controlled molecular weights (2.5 × 10 3 −2.6 × 10 4 g/mol) and of narrow molecular weight distributions were obtained quantitatively with high functionalities.