Jump to main content
Jump to site search


Stirring rate provides dramatic acceleration of the ultrafast interfacial SET-LRP in biphasic acetonitrile-water mixtures

Abstract

The influence of stirring rate on the SET-LRP of methyl acrylate and n-butyl acrylate catalyzed with Cu(0) wire in methanol and with Cu(0) generated by the reduction of Cu(II)Br2 with NaBH4 by two different methodologies in biphasic acetonitrile-water mixtures was investigated. In all cases tris(2-dimethylaminoethyl)amine (Me6-TREN) was used as ligand and the polymerizations were carried out at 25 °C. No effect of the stirring rate on the rate of SET-LRP was observed in methanol when Cu(0) wire was used as a catalyst and the reaction mixture exhibited a single homogeneous phase. However, a dramatic acceleration of the already ultrafast interfacial SET-LRP was observed in biphasic acetonitrile-water mixtures for both methodologies employed for the generation of Cu(0) directly in the reaction mixture. No increase in the dispersity of the resulting polymers was observed when the rate of the reaction was increased by stirring. This is contrary to rate of polymerization increased by catalyst concentration. Mechanistic hypothesis for this increase in rate of SET-LRP in biphasic acetonitrile-water systems was advanced. This catalytic-like effect of the stirring rate is expected to be of interest for both laboratory and technological applications.

Back to tab navigation
Please wait while Download options loads

Publication details

The article was accepted on 15 May 2017 and first published on 16 May 2017


Article type: Paper
DOI: 10.1039/C7PY00659D
Citation: Polym. Chem., 2017, Accepted Manuscript
  •   Request permissions

    Stirring rate provides dramatic acceleration of the ultrafast interfacial SET-LRP in biphasic acetonitrile-water mixtures

    R. L. Jezorek, M. Enayati, R. Smail, J. Lejnieks, S. Grama, M. Monteiro and V. Percec, Polym. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7PY00659D

Search articles by author