Mohsen Abdelhady - Academia.edu (original) (raw)
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Papers by Mohsen Abdelhady
Polymer Degradation and Stability, 1993
Commercial high-density polyethylene (HDPE) samples were irradiated by y-rays with doses ranging ... more Commercial high-density polyethylene (HDPE) samples were irradiated by y-rays with doses ranging from 10 to 200 kGy. Positron annihilation lifetime measurements were performed to study the effect of y-radiation on the structure of polyethylene. The lifetime r). associated with the pick-off process, in which the positron in o-Ps annihilates an electron from the surrounding material, and its intensity I, are measured as a function of y-dose. It can be concluded that the effect of y-irradiation on polyethylene results in intensive formation of new bonds or crosslinking at doses ranging from 10 to 100 kGy. Saturation of f, for the irradiated HDPE at doses ranging from 100 to 200 kGy may indicate the achievement of a structural stability
Polymer Degradation and Stability, 1993
Commercial high-density polyethylene (HDPE) samples were irradiated by y-rays with doses ranging ... more Commercial high-density polyethylene (HDPE) samples were irradiated by y-rays with doses ranging from 10 to 200 kGy. Positron annihilation lifetime measurements were performed to study the effect of y-radiation on the structure of polyethylene. The lifetime r). associated with the pick-off process, in which the positron in o-Ps annihilates an electron from the surrounding material, and its intensity I, are measured as a function of y-dose. It can be concluded that the effect of y-irradiation on polyethylene results in intensive formation of new bonds or crosslinking at doses ranging from 10 to 100 kGy. Saturation of f, for the irradiated HDPE at doses ranging from 100 to 200 kGy may indicate the achievement of a structural stability