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Synthesis of Amphiphilic ABC Triblock Copolymers with PEO as the Middle Block

✍ Scribed by Surbhi Mahajan; Byoung-Ki Cho; Jürgen Allgaier; Lewis J. Fetters; Geoffrey W. Coates; Ulrich Wiesner

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
127 KB
Volume
25
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

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.

magnified imageGPC chromatograms of an ABC triblock copolymer, PEP‐b‐PEO‐b‐PHMA, and its intermediate precursors exhibiting narrow polydispersities.

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