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Effect of irradiation on crystallinity and mechanical properties of ultrahigh molecular weight polyethylene

机译：Effect of irradiation on crystallinity and mechanical properties of ultrahigh molecular weight polyethylene

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AbstractUltrahigh molecular weight polyethylene (UHMWPE) has been irradiated (0–40 Mrad) with a Co60source at room temperature under vacuum. The crystallinity has been investigated by differential scanning calorimetry (DSC) and small‐angle X‐ray scattering (SAXS). The mechanical properties have been determined at room temperature. A significant increase of heat of fusion can be seen at low irradiation doses, which is attributed to crystallization, caused by chain scission during the process of irradiation. It is also observed that the thickness of the lamellae changes with irradiation dose. The Young's modulus has been improved significantly after irradiation at low doses. © 1993 John WileySon

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