Oligomeric 2-oxazolines with a methacrylate end-group are versatile building blocks for the synthesis of comb and graft copolymers using the reversible addition�fragmentation chain transfer (RAFT) technique. Mainly 2-ethyl-2-oxazoline (EtOx) was applied as monomer for the cationic ring-opening polymerization (CROP) towards these macromonomers,1 but also macromonomers derived from 2-cyclo-propyl-2-oxazoline2 could be used to obtain comb-shaped poly(2-oxazoline)s (POx). The concept was further exploited by utilization of 2-n-nonyl-2-oxazoline (NonOx).3 Despite the sterically demanding substituents, the oligoNonOx could be homopolymerized via RAFT polymerization extending the series of comb-shaped POx with a methacrylate backbone towards highly hydrophobic polyNonOx.The copolymerization of oligoEtOx and oligoNonOx macromonomers offered simple access to a series of heterografted polymers with a polymethacrylate backbone and varying composition of oligomeric 2-oxazoline side chains, which were investigated by means of differential scanning calorimetry, wide-angle X-ray scattering, dynamic light scatter und cryo-transmission electron microscopy. 1 C. Weber, C. R. Becer, R. Hoogenboom, U. S. Schubert, Macromolecules, 2009  , 42, 2965-2971.2 M. M. Bloksma, C. Weber, I. Y. Perevyazko, A. Kuse, A. Baumgartel, A. Vollrath, R. Hoogenboom, U. S. Schubert, Macromolecules, 2011  , 44, 4057-4064.3 C. Weber, M. Wagner, D. Baykal, S. Hoeppener, R. M. Paulus, G. Festag, E. Altuntas, F. H. Schacher, U. S. Schubert, Macromolecules, 2013  , 46, 5107-5116.

Easy access to amphiphilic heterografted comb copolymers using poly(2-oxazoline) based macromonomers

248th National Meeting (2014)

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