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

Journal Article · Fri Dec 10 00:00:00 EST 1993 · Journal of Applied Polymer Science; (United States)

DOI:https://doi.org/10.1002/app.1993.070501015· OSTI ID:5604939

Zhao, Yong; Luo, Yunxia; Jiang, Bingzheng ^[1]

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1. Academia Sinica, Changchun (China). Changchun Inst. of Applied Chemistry

Ultrahigh molecular weight polyethylene (UHMWPE) has been irradiated (0--40 Mrad) with a Co[sup 60] source 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.

• OSTI ID: 5604939
• Journal Information: Journal of Applied Polymer Science; (United States), Vol. 50:10; ISSN 0021-8995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
POLYETHYLENES
CRYSTALLIZATION
PHYSICAL RADIATION EFFECTS
YOUNG MODULUS
MOLECULAR WEIGHT
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHASE TRANSFORMATIONS
POLYMERS
POLYOLEFINS
RADIATION EFFECTS
360605* - Materials- Radiation Effects
360603 - Materials- Properties
360602 - Other Materials- Structure & Phase Studies