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Thermal decomposition of poly(ethylene terephthalate)/mesoporous molecular sieve composites

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Abstract

The nonisothermal and isothermal degradation processes of poly(ethylene terephthalate)/mesoporous molecular sieve (PET/MMS) composites synthesized by insitu polymerization were studied by using thermogravimetric analysis in nitrogen. The nonisothermal degradation of the composite is found to be the first-order reaction. An isoconversional procedure developed by Ozawa is used to calculate the apparent activation energy (E), which is an average value of about 260 kJ/mol with the weight conversion from 0% to 30%, and is higher than that of neat PET. Isothermal degradation results are confirmed with the nonisothermal process, in which PET/MMS showed higher thermal stability than neat PET. The polymer in mesoporous channels has more stability due to the protection of the inorganic pore-wall. These results indicate that mesoporous MMS in PET/MMS composites improve the stability of the polymer.

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Authors and Affiliations

  1. Key Lab of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, China

    Run Mingtao, Zhang Dayu, Wu Sizhu & Wu Gang

  2. College of Chemistry & Environmental Science, Hebei University, Baoding, 071002, China

    Run Mingtao

Authors
  1. Run Mingtao
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  2. Zhang Dayu
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  3. Wu Sizhu
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  4. Wu Gang
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Corresponding authors

Correspondence to Run Mingtao or Wu Gang.

Additional information

Translated from Polymer Materials Science and Engineering, 2006, 22(1): 64–67 [译自: 高分子材料与工程]

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Run, M., Zhang, D., Wu, S. et al. Thermal decomposition of poly(ethylene terephthalate)/mesoporous molecular sieve composites. Front. Chem. Eng. China 1, 50–54 (2007). https://doi.org/10.1007/s11705-007-0010-z

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  • DOI: https://doi.org/10.1007/s11705-007-0010-z

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