Learning from mother nature: exploiting a biological antioxidant for the melt stabilisation of polymers

Research output: Contribution to journalArticle

Abstract

An overview of the antioxidant role of the biologically active form of vitamin E, α-tocopherol, in polyolefins is discussed. The effect of the vitamin antioxidant on the melt and colour stability of polyethylene (PE) and polypropylene (PP) is highlighted. It is shown that tocopherol is a highly effective antioxidant that results in superior melt stabilisation of polyolefins particularly when used at much lower concentration than that needed for conventional synthetic hindered phenol processing stabilisers. As with other hindered phenols,α-tocopherol imparts also some colour to the polymer but this is shown to be reduced drastically in the presence of other antioxidants, such as phosphites, or other additives, such as polyhydric alcohols.
Original languageEnglish
Pages (from-to)107-117
Number of pages11
JournalMacromolecular Symposia
Volume176
Issue number1
DOIs
Publication statusPublished - 5 Dec 2001

Keywords

  • alpha tocopherol
  • antioxidant
  • free radical
  • autooxidation
  • food preservation
  • lipid peroxidation

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