Kinetics of the dehydrochlorination of poly(vinyl chloride) in the presence of NaOH and various diols as solvents

Tomohito Kameda, Katsuaki Imai, Guido Grause, Tadaaki Mizoguchi, Toshiaki Yoshioka

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The dehydrochlorination of PVC in the presence of NaOH was investigated in different diols. Diethylene glycol (DEG), triethylene glycol (TEG), and propylene glycol (PG) were found to be effective in accelerating the dechlorination of PVC. The dehydrochlorination was promoted in the order TEG > DEG > PG, which was in agreement with the compatibility between PET and the diol. Compatibility resulted in an improved penetration of the PVC particle by the solvent, leading to the acceleration of the dehydrochlorination. The dehydrochlorination of PVC in NaOH/diol followed first-order kinetics, confirming the progress of the reaction under chemical reaction control. The apparent activation energies were 82 kJ mol-1, 109 kJ mol-1, and 151 kJ mol-1 for TEG, DEG, and PG, respectively. The lower the activation energy became the faster the dehydrochlorination of PVC proceeded.

Original languageEnglish
Pages (from-to)1595-1597
Number of pages3
JournalPolymer Degradation and Stability
Volume94
Issue number9
DOIs
Publication statusPublished - 2009 Sep

Keywords

  • Apparent activation energy
  • Dechlorination
  • Diol
  • Poly(vinyl chloride)

ASJC Scopus subject areas

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

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