Thermal decomposition of low-density polyethylene in the presence of chlorine-containing polymers

M. Blazso, B. Zelei, E. Jakab

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The thermal decomposition of low-density polyethylene was studied on samples containing a few per cent of poly(vinyl chloride), poly(vinylbenzyl chloride) or poly(chlorostyrene), using thermogravimetry/mass spectrometry, pyrolysis-gas chromatography/mass spectrometry between 400 and 1000 °C, and FT-IR analysis of the pyrolysis tars. Reactive species evolving from the chlorine-containing polymers during their thermal degradation affect the decomposition reactions of polyethylene. Hydrogen chloride, formed from chloropolymers prior to the beginning of the PE thermal decomposition, promotes the initiating steps of thermal degradation and inhibits β-scission of macroradicals. Chlorine evolves at a relatively higher temperature, and enhances dehydrogenation reactions leading to aromatic products.

Original languageEnglish
Pages (from-to)221-235
Number of pages15
JournalJournal of Analytical and Applied Pyrolysis
Volume35
Issue number2
DOIs
Publication statusPublished - 1995

Fingerprint

Chlorine containing polymers
Low density polyethylenes
Polyethylene
Pyrolysis
Mass spectrometry
Vinyl Chloride
Tars
Hydrochloric Acid
Chlorine
Tar
Dehydrogenation
Gas chromatography
Thermogravimetric analysis
Polyethylenes
Chlorides
Decomposition
Hydrogen

Keywords

  • Chlorine-containing polymers
  • Fourier transform-infrared spectrophotometry
  • Low-density polyethylene
  • Pyrolysis-gas chromatography/mass spectrometry
  • Thermal decomposition
  • Thermogravimetry/mass spectrometry

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

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AU - Blazso, M.

AU - Zelei, B.

AU - Jakab, E.

PY - 1995

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N2 - The thermal decomposition of low-density polyethylene was studied on samples containing a few per cent of poly(vinyl chloride), poly(vinylbenzyl chloride) or poly(chlorostyrene), using thermogravimetry/mass spectrometry, pyrolysis-gas chromatography/mass spectrometry between 400 and 1000 °C, and FT-IR analysis of the pyrolysis tars. Reactive species evolving from the chlorine-containing polymers during their thermal degradation affect the decomposition reactions of polyethylene. Hydrogen chloride, formed from chloropolymers prior to the beginning of the PE thermal decomposition, promotes the initiating steps of thermal degradation and inhibits β-scission of macroradicals. Chlorine evolves at a relatively higher temperature, and enhances dehydrogenation reactions leading to aromatic products.

AB - The thermal decomposition of low-density polyethylene was studied on samples containing a few per cent of poly(vinyl chloride), poly(vinylbenzyl chloride) or poly(chlorostyrene), using thermogravimetry/mass spectrometry, pyrolysis-gas chromatography/mass spectrometry between 400 and 1000 °C, and FT-IR analysis of the pyrolysis tars. Reactive species evolving from the chlorine-containing polymers during their thermal degradation affect the decomposition reactions of polyethylene. Hydrogen chloride, formed from chloropolymers prior to the beginning of the PE thermal decomposition, promotes the initiating steps of thermal degradation and inhibits β-scission of macroradicals. Chlorine evolves at a relatively higher temperature, and enhances dehydrogenation reactions leading to aromatic products.

KW - Chlorine-containing polymers

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