Electron-Beam-Induced Modifications in High-Density Polyethylene |
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Authors: | H G Harish Kumar R D Mathad S Ganesh K S S Sarma C R Haramaghatti |
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Institution: | 1.Department of Physics,Gulbarga University,Gulbarga,India;2.Microtron Center,Mangalore University,Mangalore,India;3.Bhabha Atomic Research Center,Mumbai,India;4.Department of Inorganic and Physical Chemistry,Indian Institute Science,Bangalore,India |
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Abstract: | Post-irradiation studies have been carried out to elucidate the effects of electron beam irradiation on the structural, optical,
dielectric, and thermal properties of high-density polyethylene (HDPE) films. The experimental results showed that both the
optical band gap and activation energy of HDPE films decreases with an increase in the doses of electron radiation. The electrical
measurements showed that dielectric constant and the ac conductivity of HDPE increases with an increase in the dose of electron
radiation. The thermal analysis carried out using DSC and TGA revealed that the melting temperature, degree of crystallinity,
and thermal stability of the HDPE films increased, obviously, due to the predominant cross-linking reaction following high
doses of electron irradiation. |
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