Chemical recycling of rigid-PVC by oxygen oxidation in NaOH solutions at elevated temperatures

Toshiaki Yoshioka, Keiichi Furukawa, Akitsugu Okuwaki

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Oxidative degradation of rigid-PVC pellets (R-PVC) with oxygen was carried out in 1-25 mol/kg-H2O (m) NaOH solutions, at 150-260 °C and Po2 of 1-10 MPa in order to investigate the chemical recycling of PVC materials. The apparent rate of oxidative degradation of R-PVC progressed as a zero order reaction, and the apparent activation energy was 38.5 kJ mol-1. The major products were oxalic acid, a mixture of benzenecarboxylic acids, and CO2. The tin in R-PVC was extracted completely. This paper reports the possibility of converting PVC materials into raw materials such as carboxylic acids by chemical recycling.

Original languageEnglish
Pages (from-to)285-290
Number of pages6
JournalPolymer Degradation and Stability
Volume67
Issue number2
DOIs
Publication statusPublished - 2000 Feb 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry

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