Identification of antioxidants in polymeric insulating materials by terahertz absorption spectroscopy

Takuya Kozai, Takuya Kaneko, Naoshi Hirai, Yoshimichi Ohki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

For the purpose of using organic polymeric materials for electrical insulation, various additives such as antioxidants are added to prevent degradation or oxidative decomposition of the polymers. Therefore, it is desirable that we can identify antioxidants added in polymers by instrument analyses. In this research, terahertz absorption spectroscopy was conducted for nine kinds of antioxidants. The spectroscopy was also conducted for sheets of low-density polyethylene, to which each antioxidant had been added with different contents. As a result, it has become clear that each antioxidant has its own specific spectrum. In addition, for most antioxidants, the absorption intensity is proportional to the content of antioxidant added in LDPE. However, several absorption peaks change their spectral shapes when the antioxidant is in LDPE.

Original languageEnglish
Pages (from-to)284-290
Number of pages7
JournalPolymer Degradation and Stability
Volume147
DOIs
Publication statusPublished - 2018 Jan 1

Fingerprint

Terahertz spectroscopy
Insulating materials
antioxidants
Antioxidants
Absorption spectroscopy
insulation
absorption spectroscopy
Polymers
Low density polyethylenes
Polyethylene
electrical insulation
polymers
Insulation
polyethylenes
Spectroscopy
degradation
Decomposition
decomposition
Degradation

Keywords

  • Antioxidant
  • Insulating polymer
  • Polyethylene
  • Radical scavenger
  • Spectroscopy
  • Terahertz wave

ASJC Scopus subject areas

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

Cite this

Identification of antioxidants in polymeric insulating materials by terahertz absorption spectroscopy. / Kozai, Takuya; Kaneko, Takuya; Hirai, Naoshi; Ohki, Yoshimichi.

In: Polymer Degradation and Stability, Vol. 147, 01.01.2018, p. 284-290.

Research output: Contribution to journalArticle

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