CYCLIZATION IN GAMMA RAY IRRADIATED HIGH DENSITY POLYETHYLENE

1957 ◽  
Vol 79 (17) ◽  
pp. 4809-4809 ◽  
Author(s):  
Malcolm Dole ◽  
D. C. Milner ◽  
T. F. Williams
Keyword(s):  
High Density Polyethylene ◽  
Gamma Ray ◽  
High Density

scholarly journals Nano-Alumina and Radiation Effect on the Mechanical Properties of High Density Polyethylene/Hydroxy Apatite Composite

2011 ◽  
Vol 471-472 ◽  
pp. 121-126
Author(s):  
N. Akmil ◽  
Luqman Chuah Abdullah ◽  
M. Ahmad ◽  
Dahlan Khairul Mohd. Zaman
Keyword(s):  
Mechanical Properties ◽  
Radiation Dose ◽  
High Density Polyethylene ◽  
Radiation Effect ◽  
Gamma Ray ◽  
High Density ◽  
Strengthening Mechanisms ◽  
Hydroxy Apatite ◽  
Nano Alumina ◽  
Hydroxyl Apatite

The effect of nano-alumina and radiation on the mechanical properties of high density polyethylene hydroxyl apatite composite was investigated. The study showed that nano alumina as filler in the composite enhanced the strength of the polymer matrix and hence improved the mechanical properties of the composite. The study also showed that the mechanical properties of the composite depended on doses of nano alumina used and radiation dose of gamma ray. The maximum radiation dose used in this experiment 100 KGy is the best dose for the composite that enhances the tensile strength, impact, modulus and flexural strength. The interface behavior and strengthening mechanisms are discussed.

Investigation of gamma ray attenuation features of bismuth oxide nano powder reinforced high-density polyethylene matrix composites

2020 ◽  
Vol 168 ◽  
pp. 108537 ◽  
Author(s):  
Alyaa H. Abdalsalam ◽  
Erdem Şakar ◽  
Kawa M. Kaky ◽  
M.H.A. Mhareb ◽  
Betul Cevi̇z Şakar ◽  
...  
Keyword(s):  
Bismuth Oxide ◽  
High Density Polyethylene ◽  
Gamma Ray ◽  
High Density ◽  
Matrix Composites ◽  
Polyethylene Matrix ◽  
Nano Powder ◽  
Gamma Ray Attenuation

High Density Polyethylene Membrane Filled with Alumina Prepared by a Gamma Ray Irradiation

2011 ◽  
Vol 11 (8) ◽  
pp. 7483-7486 ◽  
Author(s):  
Jong-Seok Park ◽  
Hae-Jun Sung ◽  
Youn-Mook Lim ◽  
Hui-Jeong Gwon ◽  
Young-Chang Nho
Keyword(s):  
High Density Polyethylene ◽  
Gamma Ray ◽  
High Density ◽  
Gamma Ray Irradiation

scholarly journals Study of some γ-ray attenuation parameters for new shielding materials composed of nano ZnO blended with high density polyethylene

2019 ◽  
Vol 34 (4) ◽  
pp. 342-352 ◽  
Author(s):  
Zainab Alsayed ◽  
Mohamed Badawi ◽  
Ramadan Awad ◽  
Abouzeid Thabet ◽  
Ahmed El-Khatib
Keyword(s):  
Attenuation Coefficient ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
Gamma Ray ◽  
Mass Attenuation Coefficient ◽  
Radiation Shielding ◽  
High Density ◽  
Linear Attenuation Coefficient ◽  
Nano Zno ◽  
Mass Attenuation

The extensive utilization of radiation is rapidly developing worldwide involving abundant fields like medical, industrial, research, and nuclear facilities. This makes the need for studying radiation shielding materials and their properties more urgent than ever. In the present study, bulk and nano ZnO were mixed by the same ratio each time (10, 20, 30, and 40 wt.%), with high-density polyethylene as a polymer matrix and characterized by X-ray diffraction. The results confirmed the good dispersion of bulk and nano ZnO particles within the polymer matrix. The prepared composite samples were used in different thicknesses as gamma ray shielding materials, and the heaviness was calculated and compared to lead. Using HPGe detector at specific energies (59.53, 356.01, 661.66, 1173.33, and 1332.50 keV) for different radioactive point sources (241Am, 133Ba, 137Cs, and 60Co), the mass attenuation coefficient for the samples was measured experimentally. Depending upon the obtained values, the linear attenuation coefficient, half-value layer, tenth value layer, heaviness and relaxation length were estimated. Using the XCOM database, the values of linear attenuation coefficient, mass attenuation coefficient, and other parameters were calculated theoretically for the bulk ZnO blended with high-density polyethylene. The obtained results were compared to the experimental values for nano and bulk ZnO blended with high density polyethylene. The radiation shielding behavior of nano ZnO blended with high density polyethylene was found to be more promising and efficient for radiation protection against gamma ray.

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