Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 42, Issue 10, Pages 2313-2320Publisher
WILEY-BLACKWELL
DOI: 10.1002/pola.20067
Keywords
atom transfer radical polymerization (ATRP); ring-opening polymerization (ROP); miktoarm star polymers
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A novel miktofunctional initiator (1), 2-hydroxyethyl 3-[(2-bromopropanoyl)oxyl-2-{[(2-bromopropanoyl)oxylmethyll-2-methyl-propanoate, possessing one initiating site for ring-opening polymerization (ROP) and two initiating sites for atom transfer radical polymerization (ATRP), was synthesized in a three-step reaction sequence. This initiator was first used in the ROP of E-caprolactone, and this led to a corresponding polymer with secondary bromide end groups. The obtained poly(E-caprolactone) (PCL) was then used as a macroinitiator for the ATRP of tert-butyl acrylate methyl methaerylate, and this resulted in AB(2)-type PCL-[poly(tert-butyl acrylate)](2) or PCL-[poly(methyl methacrylate)], miktoarm star polymers with controlled molecular weights and low polydispersities (weight-average molecular weight/number-average molecular weight < 1.23) via the ROP-ATRP sequence. (c) 2004 Wiley Periodicals, Inc.
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