Ultrafast PhotoRAFT Block Copolymerization of Isoprene and Styrene Facilitated through Continuous-Flow Operation

Felix Lauterbach, Maarten Rubens, Volker Abetz, Tanja Junkers

Research output: Contribution to journalArticleResearchpeer-review

23 Citations (Scopus)

Abstract

Polymers made from isoprene and styrene resemble an important class of synthetic macromolecules found in a wide range of everyday commodity products. Their synthesis is usually limited to radical emulsion or anionic polymerization. Herein, we report on ultrafast photoiniferter reversible addition-fragmentation chain transfer (RAFT) polymerization of isoprene and styrene in a continuous-flow microreactor. The cooperative action of a high photoinitiation efficiency and use of elevated temperatures considerably reduces the reaction times to less than half an hour to give high monomer conversions, allowing for the first time polyisoprene to be yielded from controlled radical polymerization in high definition and reasonable reaction times. High chain-end fidelities are maintained and block copolymers were prepared including a polystyrene-block-polyisoprene-block-polystyrene (PS-b-PI-b-PS) triblock copolymer.

Original languageEnglish
Pages (from-to)14260-14264
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number43
DOIs
Publication statusPublished - 22 Oct 2018

Keywords

  • continuous flow
  • isoprene
  • photoiniferter
  • RAFT polymerization
  • styrene

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