| Abstract: | The grafting of acrylic acid in aqueous solution to nylon 6 film has been studied in the presence of ferrous, ferric, and cupric salts. The mutual irradiation technique was adopted using a 60Co source. The anions were found to have no effect on the grafting or homopolymerization, but both of these processes were suppressed by the cations in the following order of effectiveness: Cu2+ > Fe2+ > Fe3+. The rate constant for the capture of hydroxyl radicals by acrylic acid has been determined as 6 × 109 1. mole?1 sec?1 by pulse radiolysis using the CNS? competition method. By invoking this result, mechanisms have been suggested for the process of chain termination by metal cations. |
