Joke Vandenbergh, Thales de Moraes Ogawa and Thomas Junkers Precision synthesis of acrylate multiblock copolymers from consecutive microreactor RAFT polymerizations Journal of Polymer Science Part A: Polymer Chemistry 51
Well-defined acrylate reversible addition fragmentation chain transfer (RAFT) polymers and multiblock-copolymers are synthesized in a continuous-flow microreactor. Using this technique, highly reproducible and fast polymerizations yield quantitatively functionalized PnBuA with a molar mass of 2000 g mol-1. This material is employed as a macro-RAFT agent for subsequent block-copolymerizations with different acrylate monomers. A multiblock-copolymer (Mn = 31,000 g mol-1, PDI = 1.46) consisting of 5 consecutive acrylate blocks is synthesized, demonstrating the benefits of flow microreactor technology compared to batch procedures.
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