Pyrolysis modeling of PVC and PMMA using a distributed reactivity model

Abhishek Bhargava, Patrick Van Hees, Berit Andersson

Research output: Contribution to journalArticlepeer-review

24 Citations (SciVal)

Abstract

The thermal decomposition kinetics of poly(vinyl chloride) (PVC) and poly(methyl methacrylate) (PMMA) was studied by thermogravimetry using non isothermal experiments. A detailed kinetic analysis was done using the isoconversional methods (model-free) (including Friedman, Kissinger-Akhaira-Sunose (KAS) and Kissinger methods) and distributed reactivity model (model-fitting). The overall aim was to retrieve kinetic parameters of the model describing the differential thermogravimetric (DTG) curve. For distributed reactivity models, both double and multi-Gaussian methods were used to explain the thermal decomposition process in these polymers. Apparent kinetic parameters were retrieved using optimization calculations with a newly developed computer code using MATLAB® involving pattern search algorithm. Modeling results were compared with the experimental data obtained in a simultaneous thermal analyzer (STA). Agreement between experimental tests and simulations showed good results for fire modeling applications for these polymers.

Original languageEnglish
Pages (from-to)199-211
Number of pages13
JournalPolymer Degradation and Stability
Volume129
DOIs
Publication statusPublished - 2016 Jul 1

Subject classification (UKÄ)

  • Textile, Rubber and Polymeric Materials

Keywords

  • Distributed activation energy model (DAEM)
  • Fire behavior
  • Pyrolysis modeling
  • Thermal degradation

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