聚丙烯腈改性碳纳米管复合材料的电性能

华东师范大学学报(自然科学版) ›› 2012, Vol. 2012 ›› Issue (5): 24-30.

聚丙烯腈改性碳纳米管复合材料的电性能

张健，徐学诚

华东师范大学物理系,上海 200241

收稿日期:2011-11-01 修回日期:2012-02-01 出版日期:2012-09-25 发布日期:2012-09-29

Electrical conductivity properties of modified polyacrylonitrile/MWNTs composites

ZHANG Jian, XU Xue-cheng

Department of Physics, East China Normal University, Shanghai 200241, China

Received:2011-11-01 Revised:2012-02-01 Online:2012-09-25 Published:2012-09-29

摘要/Abstract

摘要： 采用溶液聚合的方法制备聚丙烯腈，对聚丙烯腈进行热处理改性后，与碳纳米管共混制备复合材料.与未改性处理的复合材料相比，电导率提高了2个多数量级.用FTIR、Raman和XPS等方法进行研究，结果表明聚丙烯腈经热处理改性后,部分腈基(—C≡〖KG-*5/7〗≡N)转变为亚胺基（—C=〖KG-*4/7〗=N），其链状结构向环状结构转化，MWNTs上的π电子与改性后聚丙烯腈的π电子之间形成强的π-π共轭，增强了改性聚丙烯腈与碳纳米管之间的相互作用，提高了复合材料的导电性能.

关键词: 多壁碳纳米管, 聚丙烯腈, 热处理改性, 电性能

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

中图分类号:

O631.2+3

张健，徐学诚. 聚丙烯腈改性碳纳米管复合材料的电性能[J]. 华东师范大学学报(自然科学版), 2012, 2012(5): 24-30.

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.

参考文献

［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.

[1]	石国娴, 徐学诚. 卤素掺杂对多壁碳纳米管导电性能的影响[J]. 华东师范大学学报(自然科学版), 2013, 2013(6): 120-126.
[2]	智慧，徐学诚. 热温改性P(MMA-St)/MWNTs复合材料导电性能研究[J]. 华东师范大学学报(自然科学版), 2013, 2013(1): 121-127, 138.
[3]	智慧，徐学诚. P(MMA-St)/MWNTs复合材料导电性能研究[J]. 华东师范大学学报(自然科学版), 2012, 2012(4): 43-49, 60.
[4]	吴玲娟;叶葏;韩菲菲;梁旦;高建生;盛玮;徐学诚. MWNTs/掺溴聚苯胺复合材料导电性能研究[J]. 华东师范大学学报(自然科学版), 2010, 2010(5): 110-117.
[5]	韩菲菲;梁旦;王红敏;唐国强;徐学诚 . 聚噻吩及聚3-辛基噻吩结构与导电性能研究 [J]. 华东师范大学学报(自然科学版), 2009, 2009(2): 129-135.
[6]	唐国强;梁旦;韩菲菲;王红敏;晋圣松;徐学诚. 多壁碳纳米管掺溴及表面高分子修饰的研究[J]. 华东师范大学学报(自然科学版), 2008, 2008(5): 84-89.
[7]	边成香;徐学诚;杨国光 . 导电复合材料磺化聚苯乙炔/多壁碳纳米管研究 [J]. 华东师范大学学报(自然科学版), 2007, 2007(3): 127-134.