Journal of East China Normal University(Natural Sc ›› 2013, Vol. 2013 ›› Issue (1): 121-127, 138.

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Study on the conductivity of P(MMA-St)/MWNTs composites after temperature modification

ZHI Hui, XU Xue-cheng   

  1. Department of Physics, East China Normal University, Shanghai 200241, China
  • Received:2012-03-01 Revised:2012-06-01 Online:2013-01-25 Published:2013-01-18

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Abstract: Methyl methacrylate-styrene copolymer/multiwalled carbon nanotubes (P(MMA-St)/MWNTs) composites were prepared via situ emulsion polymerization and the influence of temperature modification on the conductivity of the composites was studied. The results indicated that the conductivity of the composite in the threshold value was increased by 2 orders of magnitude after temperature modification at 200 ℃ for 1 h. The relationship between the structure, interaction and properties of the composites were initiated by FTIR, XPS and XRD. After temperature modification some ester and acid in the PMMA change into anhydride. The change can prolong the effective conjugation and enhance the interaction between copolymers and MWNTs that the conductivity of composites improved.

Key words: P(MMA-St), MWNTs, temperature modification, conductivity

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