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Keywords:

  • reversible addition-fragmentation chain transfer;
  • living radical polymerization;
  • kinetics (polym.);
  • reactivity ratios;
  • glycidyl methacrylate;
  • N,N-dimethylaminoethyl methacrylate

Abstract

In this work, copolymerization of two functional monomers, glycidyl methacrylate (GMA) and N,N-dimethylaminoethyl methacrylate (DMAEMA), was firstly carried out via reversible addition-fragmentation chain transfer (RAFT) polymerization successfully. The copolymerization kinetics was investigated under the molar ratio of n[GMA+DMAEMA]0/n[AIBN]0/n[CPDN]0=300/1/3 at 60°C. The copolymerization showed typical "living" features such as first-order polymerization kinetics, linear increase of molecular weight with monomer conversion and narrow molecular weight distribution. The reactivity ratios of GMA and DMAEMA were calculated by the extended Kelen-Tüdös linearization methods. The epoxy group of the copolymer PGMA-co-PDMAEMA remained intact under the conditions of RAFT copolymerization and could easily be post-modified by ethylenediamine. Moreover, the modified copolymer could be used as a gene carrier.