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Thermal degradation kinetics of poly(O,O-diethyl-O-allylthiophosphate-co-acrylonitrile) in nitrogen

Authors

  • Yuanlin Ren,

    Corresponding author
    1. School of Textiles, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
    2. Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
    • School of Textiles, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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  • Bowen Cheng,

    1. Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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  • Aibing Jiang,

    1. Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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  • Youcai Lu,

    1. Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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  • Ling Xu

    1. Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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Abstract

The nonisothermal degradation kinetics of the copolymer poly(O,O-diethyl-O-allylthiophosphate-co-acrylonitrile), which was synthesized with O,O-diethyl-O-allylthiophosphate and acrylonitrile, were studied by thermogravimetry/derivative thermogravimetry techniques. The kinetic parameters, including the activation energy and the pre-exponential factor of the copolymer degradation process, were calculated by the Kissinger and Flynn–Wall–Ozawa methods. The thermal degradation mechanism of the copolymer was also studied with the Satava–Sestak method. The results show that the activation energies were 138.17 kJ/mol with the Kissinger method and 141.63 kJ/mol with the Flynn–Wall–Ozawa method. The degradation of the copolymer followed a kinetic model of a phase boundary reaction and the kinetic equation could be expressed as G(α) = 1 − (1 − α)4 [where G(α) is the integral function of conversion and α is the extent of conversion of the reactant decomposed at time t]. The reaction order was 4. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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