Thermal/oxidative degradation and stabilization of polyethylene glycol

Seongok Han, Chongyoup Kim, Dongsook Kwon

Research output: Contribution to journalArticlepeer-review

238 Citations (Scopus)

Abstract

Thermal degradation and stabilization of polyethylene glycol (PEG) with a molecular weight of 6000 have been investigated in order to develop PEG as a thermal energy storage material. Low molecular weight esters including formic esters were produced as the main products of the thermal degradation of PEG at 80 C in air. No degradation was observed for PEG aged in a vacuum. The mechanism of thermal degradation is found to be the random chain scission of the main chain. Thermal degradation could be suppressed by adding 2,2′-methylene-bis(4-methyl-6-tert-butylphenol) (MBMTBP) as an antioxidant. In the stabilizing process. MBMTBP itself is transformed to dimers or trimers.

Original languageEnglish
Pages (from-to)317-323
Number of pages7
JournalPolymer
Volume38
Issue number2
DOIs
Publication statusPublished - 1997
Externally publishedYes

Keywords

  • Degradation mechanism
  • PEG 6000
  • Phase change material

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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