EFFECTS OF IRRADIATION AND ROLLING ON THE TENSILE BEHAVIOR OF POLYETHYLENE

Journal Article · Wed Mar 01 04:00:00 EST 1961 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1961.1205015305· OSTI ID:4040674

Tsunekawa, Y; Oyane, M; Kojima, K

Tensile properties of low-pressure polyethylene subjected to both irradiation and rolling were studied. Co/sup 6//sup 0/ was used as the gamma source. The anisotropic properties induced by rolling and irradiation were measured by testing the tensile behavior of specimens cut at 0 deg , 45 deg , and 90 deg to the direction of rolling. The yield strengths of specimens cut parallel to the direction of rolling increased with increasing reduction in thickness, but the yield strengths of those cut at 45 deg and 90 deg were scarcely affected. The yield strergths of specimens that were irradiated, or irradiated and rolled, increased with increasing irradiation doses, reaching maxima at definite irradiation doses, and then decreased with increasing irradiation, regardless of whether the specimens were irradiated after rolling or rolled after irradiation. The final elongations of the specimens that were irradiated after rolling and cut parailel to the direction of rolling decreased slowly with increasing irradiation, but those of the specimens cut at right angles to the direction of rolling decreased very rapidly. In contrast, the final elongations of all specimens that were rolled after irradiation decreased very slowly regardless of the cutting direction. It may be concluded from the experimental results that the tensile properties of polyethylene irradiated after rolling are more anisotropic than those of the polyethylene rolled after irradiation. (auth)

• Research Organization: Osaka Univ.
• NSA Number: NSA-15-022799
• OSTI ID: 4040674
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 50
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANISOTROPY
COBALT 60
DISTRIBUTION
EXPANSION
GAMMA RADIATION
GAMMA SOURCES
IRRADIATION
METALS, CERAMICS, AND OTHER MATERIALS
POLYETHYLENES
RADIATION DOSES
RADIATION EFFECTS
ROLLING
TENSILE PROPERTIES
TESTING
THICKNESS