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Nonlinear current-voltage characteristics of conductive polyethylene composites with carbon black filled pet microfibrils

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Abstract

Current-voltage electrical behavior of in situ microfibrillar carbon black (CB)/poly(ethylene terephthalate) (PET)/polyethylene (PE) (m-CB/PET/PE) composites with various CB concentrations at ambient temperatures was studied under a direct-current electric field. The current-voltage (I-V) curves exhibited nonlinearity beyond a critical value of voltage. The dynamic random resistor network (DRRN) model was adopted to semi-qualitatively explain the nonlinear conduction behavior of m-CB/PET/PE composites. Macroscopic nonlinearity originated from the interfacial interactions between CB/PET micro fibrils and additional conduction channels. Combined with the special conductive networks, an illustration was proposed to interpret the nonlinear I-V characteristics by a field emission or tunneling mechanism between CB particles in the CB/PET microfibers intersections.

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Authors and Affiliations

  1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China

    Qian-ying Chen, Jing Gao, Kun Dai, Huan Pang, Jia-zhuang Xu, Jian-hua Tang & Zhong-ming Li  (李忠明)

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  1. Qian-ying Chen
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  2. Jing Gao
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  3. Kun Dai
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  4. Huan Pang
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  5. Jia-zhuang Xu
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  6. Jian-hua Tang
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  7. Zhong-ming Li  (李忠明)
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Corresponding author

Correspondence to Zhong-ming Li  (李忠明).

Additional information

This work was financially supported by the National Science Fund for Distinguished Young Scholars (No. 50925311) and National Science Fund of China (Nos. 20976112, 51033004).

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Chen, Qy., Gao, J., Dai, K. et al. Nonlinear current-voltage characteristics of conductive polyethylene composites with carbon black filled pet microfibrils. Chin J Polym Sci 31, 211–217 (2013). https://doi.org/10.1007/s10118-013-1203-1

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  • DOI: https://doi.org/10.1007/s10118-013-1203-1

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