Thermal degradation mechanism of low-density polyethylene plastic wastes in cyclohexane

KARADUMAN A., ŞİMŞEK E. H.

Journal of Polymers and the Environment, cilt.9, sa.2, ss.85-90, 2001 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 2
  • Basım Tarihi: 2001
  • Dergi Adı: Journal of Polymers and the Environment
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.85-90
  • Anahtar Kelimeler: Chemical recycling, Degradation mechanism, LDPE, Plastic wastes, Thermal degradation
  • Ankara Üniversitesi Adresli: Evet

Özet

The thermal LDPE degradation mechanism harnessing a high-pressure autoclave surrounded by a furnace was investigated in this work. Rates of formation of gas, liquid, and solid during degradation of PE plastic wastes in cyclohexane as solvent at 400 and 425°C have been experimentally determined. Four reaction mechanisms have been proposed and tested to estimates of gas, liquid, and solid. Proposed mechanisms are based on the assumption that the reactions are pseudo-first-order with respect to the reacting species. Pseudo-first-order rate constants for each of the indicated mechanistic steps have been calculated by nonlinear regression analysis. The best fit was obtained by model 2 (pure parallel reaction mechanism), and its activation energy was determined. © 2002 Plenum Publishing Corporation.