Block Copolymers of Poly(2-oxazoline)s and Poly(meth)acrylates: A Crossover between Cationic Ring-Opening Polymerization (CROP) and Reversible Addition鈥揊ragmentation Chain Transfer (RAFT)

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• 作者：Andreas Krieg ; Christine Weber ; Richard Hoogenboom ; C. Remzi Becer ; Ulrich S. Schubert
• 刊名：ACS Macro Letters
• 出版年：2012
• 出版时间：June 19, 2012
• 年：2012
• 卷：1
• 期：6
• 页码：776-779
• 全文大小：243K
• 年卷期：v.1,no.6(June 19, 2012)
• ISSN：2161-1653

文摘

To combine the advantages of poly(2-oxazoline)s (POx) and controlled radical polymerization (CRP) techniques, the cationic ring-opening polymerization (CROP) of 2-methyl-2-oxazoline (MeOx), 2-ethyl-2-oxazoline (EtOx), and 2-n-nonyl-2-oxazoline (NonOx) were terminated with a carboxylic acid functionalized chain transfer agent (CTA). The obtained PEtOx with a high degree of functionalization (DF) was used as macro-CTA for the reversible addition鈥揻ragmentation chain transfer (RAFT) polymerization of various vinylic monomers (styrene (St), methyl acrylate (MA), tert-butyl acrylate (tBuA), acrylic acid (AA), N,N-dimethyl acrylamide (DMAAm), and N,N-dimethylaminoethylacrylate (DMAEA)) resulting in well-defined block copolymers. Thus, in this work we report a versatile route to combine poly(2-oxazoline)s prepared via CROP with RAFT polymerization for the synthesis of novel block copolymers.