Mechanical properties and heat shrinkability of electron beam crosslinked polyethylene-octene copolymer
- Title
- Mechanical properties and heat shrinkability of electron beam crosslinked polyethylene-octene copolymer
- Author
- 장영욱
- Keywords
- electron-beam crosslinking; polyethylene-octene copolymer; mechanical properties; heat shrinkability
- Issue Date
- 2008-05
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- RADIATION PHYSICS AND CHEMISTRY, v. 77, No. 5, Page. 675-679
- Abstract
- The mechanical properties and heat shrinkability of electron beam crosslinked polyethylene-octene copolymer were studied. It was found that gel content increases with increased radiation dose. The analysis of results by the Charlesby-Pinner equation revealed that crosslinking was dominant over chain scission upon irradiation. Foriuation of a crosslinked structure in the electron beam irradiated sample was confirmed by the presence of a plateau of dynamic storage modulus above the melting point of the polymer. Wide-angle X-ray diffraction revealed that there was little change in crystallinity for the irradiated samples, indicating that radiation crosslinking occurs in the amorphous region of the polymer. The tensile modulus increases, whereas the elongation at break decreases with increased radiation dose. The heat shrinkability of the material increased with an increased radiation dose because the radiation-induced crosslinks serve as memory points during the shrinking process. (c) 2008 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0969806X07004070https://repository.hanyang.ac.kr/handle/20.500.11754/80357
- ISSN
- 0969-806X
- DOI
- 10.1016/j.radphyschem.2007.12.004
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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