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

T. Yoshioka, K. Furukawa, T. Sato, A. Okuwaki

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)·H2O NaOH solutions, at 130-260°C and PO2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of beozenecarboxylic acids, and CO2. We obtained 320 g of oxalic acid and 130 g of benzenecarboxylic acids (as phthalic acid) from 1 kg of F-PVC under conditions of a 15-m NaOH solution at 250°C and a PO2 of 5 MPa for 5 h.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalJournal of Applied Polymer Science
Volume70
Issue number1
DOIs
Publication statusPublished - 1998 Oct 3

Keywords

  • Base-catalysed oxygen oxidation
  • Benzenecarboxylic acids
  • Chemical recycling
  • Dehydrochlorination
  • Flexible PVC
  • NaOH solutions
  • Oxalic acid

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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