Abstract
The preirradiation method of radiation grafting has been employed to produce polyethylene (PE) films as hydrophilic materials. The effects of radiation dose, atmosphere of preirradiation and monomer concentration on the grafting of methacrylic acid and its salts (NH 4,K) on low density polyethylene have been studied. The degree of grafting increases with the dose of preirradiation, time and concentration of both acid and salt form of monomer. Irradiation in air leads to a higher degree of grafting than in N 2 or in vacuum. Hydrophilic properties of grafted polyethylene film expressed as an electric resistance have been found to depend on the degree of grafting and the type of monomers used. The PE film with 90–95% grafting of methacrylic acid has been found to have electric resistance lower than 1 10 2 mΩ·cm 2. The same conditions of grafting for the salt form give the film an electric resistance higher than 1 10 6 mΩ·cm 2.
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Schedule a callMore From: International Journal of Radiation Applications & Instrumentation. Part C, Radiation Physics & Chemistry
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