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Ultrahigh Molecular mass Polyethylene/ Carbon Nanotube CompositesCrystallization and melting properties

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Abstract

Ultrahigh molecular mass polyethylene (UHMMPE) is filled with carbon nano-tubes (CNTs) by solution in the presence of maleic anhydride grafted styrene-(ethylene-co-butylene)-styrene copolymer (MA-SEBS) as a compatibilizer. The UHMMPE/CNT composites crystallized from melt were prepared at a cooling rate of 20°C min-1. The melting and crystallization behaviors of UHMMPE/ CNT composites were investigated by differential scanning calorimetry. The results showed that onset melting temperature (T m) and degree of crystallinity (X c) of UHMMPE/CNT composites crystallized from solution are higher than those from melt due to the larger crystalline lamellar thickness. The onset crystallization temperature (T c) of UHMMPE/CNT composites tends to shift to higher temperature region with increasing CNT content in the composites. Tm and Tc of UHMMPE phase in UHMMPE/CNT composites decrease with the addition of MA-SEBS. Moreover, the crystallization rate of UHMMPE phase in UHMMPE/CNT composite is increased due to the introduction of CNTs. MA-SEBS acts as compatilizer, enhances the dispersion of CNTs in the UHMMPE matrix. Thereby, the crystallization rate of UHMMPE phase in UHMMPE/CNT composite is further increased with the addition of MA-SEBS.

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Authors and Affiliations

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan, 430074, China

    X. L. Xie, K. Aloys, X. P. Zhou & F. D. Zeng

Authors
  1. X. L. Xie
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  2. K. Aloys
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  3. X. P. Zhou
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  4. F. D. Zeng
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Xie, X.L., Aloys, K., Zhou, X.P. et al. Ultrahigh Molecular mass Polyethylene/ Carbon Nanotube CompositesCrystallization and melting properties. Journal of Thermal Analysis and Calorimetry 74, 317–323 (2003). https://doi.org/10.1023/A:1026362727368

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