GRAFTING OF ACRYLIC-ACID WITH DIETHYLENEGLYCOL DIMETHACRYLATE ONTO RADIOPEROXIDED POLYETHYLENE

Acrylic acid and diethyleneglycol-dimethacrylate are grafted onto 25 m um low-density and 130 mum high-density polyethylene previously peroxi dized by irradiation in air under the electron beams of an accelerator . Mohr's salt and methylene blue are used to prevent monomer homopolym erization. It is shown that sulfuric acid and Mohr's salt, respectivel y, enhance acrylic acid and diethylene glycol-dimethacrylate grafting. When they are combined, the influence of the monomer content on graft ing kinetics is studied. Monomer content is determined by exchange cap acity measurements.