A kinetic study on the supercritical decrosslinking reaction of silane-crosslinked polyethylene in a continuous process

Bum Ki Baek, Yun Ho La, Won Jun Na, Seung Hwan Lee, Soon Man Hong, Haksoo Han, Youn Woo Lee, Gi Joon Nam, Chong Min Koo

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7 Citations (Scopus)

Abstract

For the first time, a kinetic study on the supercritical decrosslinking reaction of silane-crosslinked polyethylene (S-XLPE) in a continuous process was conducted. The decrosslinking reaction in a continuous process was corresponding to the first-order reaction model in which the reaction rate was linearly proportional to the gel content. The residual gel content exponentially decreased with reaction time. Reaction constant was observed exponentially related to the reaction temperature. The continuous decrosslinking reaction revealed kinetic constants of 1.355 ± 0.103, 2.715 ± 0.177, and 4.348 ± 0.218 min-1 at 360, 380 and 390 °C, respectively and activation energy of 132.36 kJ mol-1.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalPolymer Degradation and Stability
Volume126
DOIs
Publication statusPublished - 2016 Apr 1
Externally publishedYes

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Keywords

  • Continuous decrosslinking
  • Kinetics
  • Recycling
  • Silane-crosslinked polyethylene
  • Supercritical methanol

ASJC Scopus subject areas

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

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