Chemical modification of poly(vinyl chloride) using sodium trisulfide

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3 Citations (Scopus)

Abstract

Chemically modifying after-life PVC may be a useful way of reducing plastic waste. In this work, we modified PVC using a solution of Na2S3 in ethylene glycol, diethylene glycol, and triethylene glycol at temperatures of 150–190 °C. Substitution ratios as high as 89 % were observed, especially at high temperatures. Against our expectations, only monosulfide bridges were present in the modified PVC; polysulfides were absent. This can be explained by the fission of S32− into highly reactive anion radicals. Using a lower-polarity solvent (triethylene glycol) accelerated the dechlorination but also enhanced elimination.

Original languageEnglish
Article number88
JournalJournal of Polymer Research
Volume22
Issue number5
DOIs
Publication statusPublished - 2015 May 1

Keywords

  • Crosslinking
  • Elimination
  • Solvent polarity
  • Substitution
  • Sulfur radical anion

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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