Abstract
Atom transfer radical polymerization (ATRP) of acrylamide was carried out in a glycerol-water (1 : 1 v/v) medium with 2-halopropionamide initiators, CuX (X = Cl, Br)/N,N,N',N'NN-hexamethyltriethylenetetraamine (HMTETA) catalyst, CuX 2 /HMTETA (20 mol% of CuX/HMTETA) and excess alkali halide (ca. 0.2-1 M) additives. The first-order kinetic plots for the disappearance of monomer were linear when either LiCI (0.2 or 1 M) (or both LiCl (1 M) and CuCl 2 / HMTETA (20 mol% of CuCl/HMTETA) were added into the system, to start with. However, in all the cases molecular weights do not increase with conversion. This signifies the uncontrolled nature of polymerization. These results suggest that CuX 2 /HMTETA is a poor deactivator as far as the ATRP of acrylamide is concerned.
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