Study on the Properties of MWNTs/Polyethylene Nanocomposites by In Situ Polymerization

Abstract:

Multi–walled carbon nanotubes (MWNTs)/polyethylene (PE) nanocomposites were prepared via in situ polymerization with MWNTs supported Cp2ZrCl2 catalyst. XPS and FESEM results imply that Cp2ZrCl2 catalyst has been immobilized in the surface of the MWNTs supports by a MAO bridge. The efficient dispersion of MWNTs in PE matrix and the strong compressive forces associated with PE on the MWNTs were demonstrated by TEM, FESEM and Raman spectra. With introducing 0.2 wt.-% MWNTs, both the tensile strength and elongation of MWNTs/PE nanocomposite increased by factors of 1.6 (from 29 MPa to 45 MPa) and 1.5 (from 909% to 1360%) comparing with the pure PE, respectively. Morphology observation of fractured surface, in accordance with the Raman results, revealed that the PE firmly adheres to the nanotubes, which is responsible for the significant improvement of the mechanical properties of nanocomposites. Thermal stabilities of the nanocomposites were significantly improved. In addition, the MWNTs/PE nanocomposites show very high UV shielding properties, which could increase photooxidative stability of the PE.

• Periodical: Applied Mechanics and Materials (Volume 192)
• Pages: 289-292
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.192.289
• Online since: July 2012
• Authors: Shi Yun Li, De Sheng Hu
• Keywords: In Situ Polymerization, Multi-Walled Carbon Nanotube (MWCNT), Nanocomposite, Polyethylene, Property

References

[1] P.M. Ajayan, O. Stephan, C. Colliex, D. Trauth, Science 1994, 265, 1212.

[2] P.J.F. Harris. Int. Mater. Rev. 2004, 49, 31.

[3] A. Star, J. Stoddart, D. Steuerman, M. Diehl, A. Boukai, E. Wong, X. Yang, S. Chung, S. Choi, J.R. Heath, Angew. Chem. Int. Ed. 2001, 40, 1721.

DOI: 10.1002/1521-3773(20010504)40:9<1721::aid-anie17210>3.0.co;2-f

[4] S. Ruan, P. Gao, X. Yang, T. Yu, Polymer 2003, 44, 5643.

[5] X. Tong, C. Liu, H. Cheng, H. Zhao, F. Yang, X. Zhang, J. Appl. Polym. Sci. 2004, 92, 3697.

[6] D. Bondual, M. Mainil, M. Alexandre, F. Monteverde, P. Dubois, Chem. Commun 2005, 781–782.

[7] K. Wiemann, W. Kaminsky, F.H. Gojny, K. Schulte, Macromol. Chem. Phys. 2005, 206, 1472.

[8] X.C. Dong, L. Wang, T. X. Sun, J. F. Zhou, Q. Yang, J. Mol. Cat. A: Chem. 2006, 255, 10.

[9] W. Kaminsky, K. Wiemann, Composite Interfaces 2006, 13, 365.

[10] W. Kaminsky, A. Funck, K. Wiemann, Macromol. Symp. 2006, 239, 1.

[11] A. Funck, W. Kaminsky, Compos. Sci. Technol. 2007, 67, 906.

[12] S.Y. Li, H. Chen, W.G. Bi, J.J. Zhou, Y.H. Wang, J.Z. Li, W.X. Cheng, M.Y. Li, L. Li, T. Tang, J. Polym. Sci. Part. A: Polym. Chem. 2007, 45, 5459.

DOI: 10.1002/pola.22290

[13] K. Li, S. Saigal, Mater. Sci. Eng. A 2007, 457, 44–57.

[14] O. Breuer, U. Sundararaj, Polym. Comp. 2004, 25, 630.

[15] C.B. Liu, T. Tang, B.T. Huang, J. Polym. Sci. Part. A: Polym. Chem. 2002, 40, 1892.

[16] L.M. Wei, T. Tang, B.T. Huang, J. Polym. Sci. Part. A: Polym. Chem. 2003, 42, 941.

[17] Y.P. Sun, K. Fu, Y. Lin, W. Huang, Acc. Chem. Res. 2002, 35, 1096.