The effect of gamma and electron beam irradiation on the thermal and mechanical properties of injection-moulded high crystallinity poly(propylene)

The effect of gamma and electron beam irradiation on the thermal and mechanical properties of injection-moulded high crystallinity poly(propylene)

In the present study, the effect of gamma and electron beam (EB) irradiation on the thermal and mechanical properties of high crystalline polypropylene (HPP) was studied. To study the structural modifications of HPP polymer which could occur following these treatments at different doses (20, 40, 60,...

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Veröffentlicht in:Polymer composites 2008-08, Vol.29 (8), p.883-889
Hauptverfasser: Hassan, Medhat M., El-kelesh, Nabil A., Dessouki, Ahmed M.
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Applied sciences
Exact sciences and technology
Physical properties
Polymer industry, paints, wood
Properties and testing
Radiation influence
Technology of polymers
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container_end_page 889
container_issue 8
container_start_page 883
container_title Polymer composites
container_volume 29
creator Hassan, Medhat M.
El-kelesh, Nabil A.
Dessouki, Ahmed M.
description In the present study, the effect of gamma and electron beam (EB) irradiation on the thermal and mechanical properties of high crystalline polypropylene (HPP) was studied. To study the structural modifications of HPP polymer which could occur following these treatments at different doses (20, 40, 60, 80, 100, and 120 kGy) were applied to all samples. Nonirradiated HPP were used as control samples, differential scanning calorimetry analysis, thermogravimetric analysis, and Mechanical tests were carried out to evaluate the effect of both irradiation treatments (EB and gamma irradiation) on HPP samples. Irradiated samples of HPP decreases melting temperature (Tm) of matrix in EB more than in gamma rays up to 5°C. The changes of mechanical properties exhibit different radiation stability towards 60Co‐gamma radiation and EB radiation. This difference reflects much higher penetration of the gamma radiation through the polymeric material as a function of sample thickness. The degradation on polymer properties caused by gamma irradiation was more than that caused by EB irradiation. Next, we compared the effects of gamma and EB irradiation to determine which of these two processes better maintained the integrity of the irradiated product. POLYM. COMPOS., 2008. © 2008 Society of Plastics Engineers.
doi_str_mv 10.1002/pc.20464
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subjects Applied sciences
Exact sciences and technology
Physical properties
Polymer industry, paints, wood
Properties and testing
Radiation influence
Technology of polymers
title The effect of gamma and electron beam irradiation on the thermal and mechanical properties of injection-moulded high crystallinity poly(propylene)
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