NUKLEONIKA 2007, 52(2):77-81
Mahmood Borhani1, Ghazanfar Mirjalili2,3, Farhood Ziaie3,4, Mohammad A. Bolorizadeh1
1 Physics Department, Shahid Bahonar University, P. O. Box 76169-133, Kerman, Iran
2 Physics Department, Yazd University, P. O. Box 89195-741, Yazd, Iran
3 Yazd Radiation Processing Center, Yazd, Iran
4 Material and Ion Beam Application Division, Nuclear Research Center for Agriculture and Medicine, P. O. Box 31485-498, Karaj, Iran
A series of low-density polyethylene (LDPE) blends with different amounts of poly(ethylene-vinyl acetate) (EVA) was prepared
and irradiated with 10 MeV electron beam in the range of 50-380 kGy at room temperature in air. Some electrical properties
of the blends such as surface and volume resistance, breakdown voltage, permittivity and loss factor were studied as a function
of the EVA content and the radiation dose. It was revealed that the surface resistance and volume resistivity of the blends reach
a maximum at a 170 kGy dose of radiation and 30 wt% of EVA. There is no considerable change at breakdown voltage permittivity
and loss factor of the irradiated samples; however, the permittivity and the loss factor of the blends increase significantly
with increasing amount of EVA contents.