Chemical modification of poly(vinyl chloride) using sodium trisulfide

Tomohito Kameda; Makoto Yoshihara; Guido Grause; Toshiaki Yoshioka

doi:10.1007/s10965-015-0718-2

Chemical modification of poly(vinyl chloride) using sodium trisulfide

Tomohito Kameda, Makoto Yoshihara, Guido Grause, Toshiaki Yoshioka

Research output: Contribution to journal › Article

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 language	English
Article number	88
Journal	Journal of Polymer Research
Volume	22
Issue number	5
DOIs	https://doi.org/10.1007/s10965-015-0718-2
Publication status	Published - 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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Kameda, T., Yoshihara, M., Grause, G., & Yoshioka, T. (2015). Chemical modification of poly(vinyl chloride) using sodium trisulfide. Journal of Polymer Research, 22(5), [88]. https://doi.org/10.1007/s10965-015-0718-2

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