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Synthesis of Amphiphilic ABC Triblock Copolymers with PEO as the Middle Block
Author(s) -
Mahajan Surbhi,
Cho ByoungKi,
Allgaier Jürgen,
Fetters Lewis J.,
Coates Geoffrey W.,
Wiesner Ulrich
Publication year - 2004
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.200400383
Subject(s) - copolymer , polymer chemistry , amphiphile , ethylene oxide , anionic addition polymerization , gel permeation chromatography , atom transfer radical polymerization , polymerization , chemistry , materials science , organic chemistry , polymer
Summary: Stepwise anionic polymerization, catalytic hydrogenation, and atom transfer radical polymerization were performed to synthesize an amphiphilic ABC triblock copolymer, poly(ethylene‐ alt ‐propylene)‐ block ‐poly(ethylene oxide)‐ block ‐poly(hexyl methacrylate) (PEP‐ b ‐PEO‐ b ‐PHMA), with hydrophilic PEO as the middle block. The resulting block copolymers have well‐defined molecular weights and narrow molecular weight distributions as revealed by 1 H NMR spectroscopy and gel permeation chromatography.GPC chromatograms of an ABC triblock copolymer, PEP‐ b ‐PEO‐ b ‐PHMA, and its intermediate precursors exhibiting narrow polydispersities.