Electrical conductivity properties of modified polyacrylonitrile/MWNTs composites

Abstract

Abstract: The PAN was synthesised by solution polymerization, modified by heat-treatment and then blended with carbon nanotube to obtain the composites. The electrical conductivity of the composites increased by two orders of magnitude more than that unmodified. Fourier transform infrared spectroscopy (FTIR), Raman spectra and X-ray spectroscopy (XPS) were used to characterize the composites. The results showed that some nitrile were changed into imino, and the chain-like structure also transformed to the cyclic structure after heat-treatment. The strong π-π system was formed between π-electrons of MWNTs and the modified PAN. The interaction between the modified polyacrylonitrile and carbon nanotubes was greatly enhanced. The electrical conductivity was highly improved.

Key words: MWNTs, polyacrylonitrile, heat-treatment modification, electrical conductivity

CLC Number:

O631.2+3

ZHANG Jian, XU Xue-cheng. Electrical conductivity properties of modified polyacrylonitrile/MWNTs composites[J]. Journal of East China Normal University(Natural Sc, 2012, 2012(5): 24-30.

References

［1］ BYRNE M T, GUN’KO Y K. Recent advances in research on carbon nanotube-polymer composites［J］. Adv Mater, 2010, 22: 1672-1688.

［2］ SPITALSKY Z, TASIS D, PAPAGELIS K, et al. Carbon nanotube-polymer composites: chemistry, processing, mechanical and electrical properties［J］. Prog Polym Sci, 2010, 35: 351-401.

［3］ SAHOO N G, RANA S, CHO J W, et al. Polymer nanocomposites based on functionalized carbon nanotubes［J］. Prog Polym Sci, 2010, 35: 837-867.

［4］ JIN H, CHAO G. Functionalization of carbon nanotubes and other nanocarbons by azide chemistry［J］. Nano-Micro Lett, 2010, 2: 213-226.

［5］ ZHANG H L, XU L H, YANG F Y, et al. The synthesis of polyacrylonitrile/carbon nanotube microspheres by aqueous polymerization under ultrasonication［J］. Carbon, 2010, 48: 688-695.

［6］ ZHOU H, TANG X Y, DONG Y M, et al. Multiwalled carbon nanotube/polyacrylonitrile composite fibers prepared by in situ polymerization［J］. J Appl Polym Sci, 2011, 120: 1385-1389.

［7］ CHENG Z P, PAN Q M, REMPEL G L. Modification of multiwall carbon nanotubes via soap-free emulsion polymerization of acrylonitrile［J］. J Polym Sci, Part A: Polym Chem, 2010, 48: 2057-2062.

［8］ GUO H N, MINUS M L, JAGANNATHAN S, et al. Polyacrylonitrile/carbon nanotube composite films［J］. ACS Appl Mater Inter, 2010, 2: 1331-1342.

［9］ JAIN R, MINUS M L, CHAE H G, et al. Processing, structure, and properties of PAN/MWNT composite fibers ［J］. Macromol Mater Eng, 2010, 295: 742-749.

［10］ WANG Y, YIN W Y. Chemical modification for PAN fibers during heat-treatment process［J］. Physics Procedia, 2011, 18: 202-205.

［11］ HAN S J, KIM B, SUH K D. Electrorheological properties of poly(acrylonitrile) microspheres coated with multiwall carbon nanotubes［J］. Mater Lett, 2007, 61: 3995-3999.

［12］ SREEKUMAR T V, CHANDRA L, SRIVASTAVA A, et al. Oxidative stabilization of polyacrylonitrile in the presence of functionalized carbon nanotubes［J］. Carbon, 2007, 45: 1105-1136.

［13］ LV M Y, GE H Y, CHEN J. Study on the structure and skin-core structure of polyacrylonitrile-based fibers during stabilization［J］. J Polym Res, 2009, 16: 513-517.

［14］ VAISMAN L, LARIN B, DAVIDI I, et al. Processing and characterization of extruded drawn MWNT-PAN composite filaments［J］. Composites Part A, 2007, 38: 1354-1362.

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