Mechanism of Supplemental Activator and Reducing Agent Atom Transfer Radical Polymerization Mediated by Inorganic Sulfites: Experimental Measurements and Kinetic Simulations.

ABSTRACT: The mechanism of atom transfer radical polymerization (ATRP) mediated by sodium dithionite (Na₂S₂O₄), with Cu^IIBr₂/Me₆TREN as catalyst (Me₆TREN: tris[2-(dimethylamino)ethyl]amine)) in ethanol/water mixtures, was investigated experimentally and by kinetic simulations. A kinetic model was proposed and the rate coefficients of the relevant reactions were measured. The kinetic model was validated by the agreement between experimental and simulated results. The results indicated that the polymerization followed the SARA ATRP mechanism, with a SO₂^•- radical anion derived from Na₂S₂O₄, acting as both supplemental activator (SA) of alkyl halides and reducing agent (RA

SUBMITTER: Krys P 

PROVIDER: S-EPMC5814143 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature