Summary
Ultra-high strength polyethylene fibers, with a tensile strength at break varying from 1.6 up to 3.5 GPa, were irradiated, at room temperature under vacuum by means of 60Co γ-radiation. Sol-gel analysis showed a ratio of crosslinking to main-chain scissioning of about 1. The tensile strength at break decreased upon irradiation. The decrease of tensile strength at break depended on initial fiber strength and could be attributed to main-chain scissioning. It was concluded that stressed chains break preferentially upon irradiation. “Fiber” networks exhibited a deformation ratio of 16 during stress-strain measurements.
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de Boer, J., Pennings, A.J. Crosslinking of ultra-high strength polyethylene fibers by means of γ-radiation. Polymer Bulletin 5, 317–324 (1981). https://doi.org/10.1007/BF00255124
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DOI: https://doi.org/10.1007/BF00255124