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A kinetic analysis of thermal decomposition of polyaniline and its composites with rare earth oxides

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Abstract

The decomposition kinetics of the pure polyaniline (PANI), PANI/CeO2 composites, and PANI/Dy2O3 composites were investigated using thermogravimetry (TG) technique under air atmosphere. Two isoconversional methods and multiple linear regression method were used for the evaluation of kinetic parameters from the TG data of different heating rates. The estimation of activation energy values shows that the addition of CeO2 significantly enhances the thermal stability of PANI matrix, while the presence of Dy2O3 slightly reduces the thermal stability of the final composites. The kinetic analysis results show that the kinetic model for the decomposition process for PANI is D3 and for the two kinds of composites is F1–D1.

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Acknowledgements

The authors gratefully acknowledge the National Natural Science Foundation of China under the Grant No. 20903017, the Program for Liaoning Excellent Talents in University (No. LJQ2013051) and the Science and Technology Foundation of Dalian under the Grant No. 2010J21DW010 for financial support to this work.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People’s Republic of China

    Shihui Zhang & Shaoxu Wang

  2. Thermochemisty Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, People’s Republic of China

    Zhicheng Tan

  3. College of Environmental Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People’s Republic of China

    Shaoxu Wang, Zihang Huang & Yini Li

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  1. Shihui Zhang
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  2. Shaoxu Wang
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  3. Zihang Huang
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  4. Yini Li
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  5. Zhicheng Tan
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Correspondence to Shaoxu Wang.

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Zhang, S., Wang, S., Huang, Z. et al. A kinetic analysis of thermal decomposition of polyaniline and its composites with rare earth oxides. J Therm Anal Calorim 119, 1853–1860 (2015). https://doi.org/10.1007/s10973-014-4309-y

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  • DOI: https://doi.org/10.1007/s10973-014-4309-y

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