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Thermal degradation study of poly(ethylene-co-methyl methacrylate) nanospheres synthesized via miniemulsion polymerization

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Abstract

The thermal stability and decomposition kinetics of poly(ethylene-co-methyl methacrylate) nanospheres synthesized via miniemulsion polymerization were investigated by thermogravimetric analysis under non-isothermal condition. Decomposition patterns of the copolymer spheres were varied depending on the ethylene feed pressure. The multivariate nonlinear regression analyses were performed to establish the degradation mechanisms, kinetic model, and the corresponding kinetic triplets. The activation energy for the decomposition of copolymers was determined by Friedman and Flynn–Wall–Ozawa methods and found to be in the range of 170–240 kJ mol−1. The kinetic parameters as well as decomposition mechanism are dependent on composition of copolymer. The results revealed the changing mechanism with changed feed pressure, responsible for the decomposition of the copolymer.

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Acknowledgements

The authors wish to thank the Director, CSIR-North East Institute of Science & Technology, Jorhat, for his permission to publish the results and CSIR for financial support from CSIR-XII FYP Network Project CSC-0206. UB also wishes to thank CSIR for award of CSIR-Senior Research Fellowship.

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  1. CSIR-North East Institute of Science and Technology (NEIST), Jorhat, Assam, 785006, India

    Urmilla Baruah, Pranjal P. Dutta, Bitupan Mohan, Shashi D. Baruah & Prakash J. Saikia

  2. Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India

    Urmilla Baruah & Prakash J. Saikia

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  1. Urmilla Baruah
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Baruah, U., Dutta, P.P., Mohan, B. et al. Thermal degradation study of poly(ethylene-co-methyl methacrylate) nanospheres synthesized via miniemulsion polymerization. J Therm Anal Calorim 148, 6085–6095 (2023). https://doi.org/10.1007/s10973-023-12162-9

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