The Effect of Electron Beam Irradiation on the Electrical Conductivity Characteristics in Low Density Polyethylene Film

전자선 조사가 저밀도 폴리에틸렌 필름의 전기 전도도특성에 미치는 영향

In this paper, physical properties and electrical conductivity of electron beam irradiated low density polyethylene are studied. The specimens of thickness 100 $\mu\textrm{m}$ irradiated as each 1 Mrad, 2 Mrad, 4 Mrad, 8 Mrad, 16 Mrad and virgin are used in this experiment. FTIR analysis shows strong absorptions by methyl groups in wavenumbers 720 $cm^{-1}$ and 1463 $cm^{-1}$, and did not show any evidences of the presence of residual carbonyl groups. From the DSC analysis, the crystalline melting point of electron beam irradiated specimen is lower than that of virgin specimen. 1 Mrad irradiated sample shows the stable electrical conductivity characteristics with both temperature and electric field.