Preparation and kinetic characterization of copolymers of acrylamide and poly(ethylene glycol) (meth)acrylate macromonomers

Novel comb copolymers were prepared by the free-radical copolymerization of acrylamide (AM) and poly(ethylene glycol) (PEG) macromonomers in aqueous solution using potassium persulfate as an initiator. The reactivity ratios of acrylamide (M1) toward macromonomers (M2), r1 = Kp11Kp12, were estimated at low conversion by using 1H nuclear magnetic resonance (n.m.r.) spectroscopy and high performance liquid chromatography (h.p.l.c.) techniques. The …