Reversible addition fragmentation chain transfer polymerization of 3-[tris(trimethylsilyloxy) silyl] propyl methacrylate

Sureyya Saricilar, Robert Knott, Christopher Barner-Kowollik, Thomas P. Davis, Johan P.A. Heuts

Research output: Contribution to journalArticleResearchpeer-review

44 Citations (Scopus)

Abstract

Reversible addition fragmentation chain transfer (RAFT) bulk polymerizations of 3-[tris(trimethylsilyloxy)silyl] propyl methacrylate (TRIS) have been carried out at 60°C, employing cumyl dithiobenzoate (CDB) and 2-cyanoprop-2-yl dithiobenzoate (CPDB) as mediating agents at concentrations ranging from 5.0 × 10-3 to 2.0 × 10-2 mol l-1. The monomer conversion vs. time evolution was followed via dilatometry and 1H NMR spectroscopy. The CDB mediated polymerization displays RAFT agent concentration dependent inhibition and rate retardation phenomena, whereas the CPDB mediated polymerization process is less susceptible to rate retardation and inhibition effects. The different behavior of CDB and CPDB in TRIS polymerization is most likely due to the increased stability of the intermediate macroRAFT radicals in the CDB mediated process. The generated RAFT polymers were analyzed via size exclusion chromatography indicating linear macromolecular growth with respect to monomer conversion and low polydispersities (PDI < 1.15) up to high monomer to polymer conversion (>90%).

Original languageEnglish
Pages (from-to)5169-5176
Number of pages8
JournalPolymer
Volume44
Issue number18
DOIs
Publication statusPublished - 7 Aug 2003
Externally publishedYes

Keywords

  • Living radical polymerization
  • Polymerization kinetics
  • Reversible addition fragmentation chain transfer (RAFT)

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