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Toughening high performance ultrahigh molecular weight polyethylene using multiwalled carbon nanotubes |
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| Authors: | S.L. RuanP. Gao X.G. YangT.X. Yu |
| Affiliation: | a Department of Mechanical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China b Department of Chemical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China |
| Abstract: | We report experimental observations on the drastically enhanced toughness in the high-strength and high-modulus ultrahigh molecular weight polyethylene (UHMWPE) films due to the addition of 1 wt% multiwalled carbon nanotubes (MWCNTs). A combination of tensile and Raman spectroscopic measurements showed that the presence of MWCNTs in the composites can lead to a ∼150% increase in strain energy density in comparison with the pure UHMWPE film at similar draw ratios. This is accompanied with an increase of ∼140% in ductility and up to 25% in tensile strength. We attribute the above observations to the chain mobility enhancement in UHMWPE induced by the MWCNTs. |
| Keywords: | High-strength and High-stiffness UHMWPE films MWCNT/UHMWPE composite films Micro-raman spectroscopy |
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