Formation of monomer residues in PS, PC, PA-6 and PVC upon γ-irradiation

Gun Young Park, Seung Yong Cho, Dae Hoon Jeon, In Shin Kwak, Kwang Ho Lee, H. J. Park

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Food packaging polymers, polystyrene (PS), polycarbonate (PC), polyamide-6 (PA-6), and polyvinylchloride (PVC), were irradiated with dose in the range 5-200 kGy. The quantities of corresponding monomer residues (styrene monomer, bisphenol-A, ε-caprolactam, vinyl chloride) released from target materials were analyzed using a SIM mode of GC/MSD. Styrene monomer in PS showed a slight increase from 740 to 777 ppm at 5-30 kGy and then decreased as the dose increased from 30 to 200 kGy. Bisphenol-A in PC was dose independent at the low doses, 5, 10 and 30 kGy, but its level increased from 173 to 473 ppm at 30 kGy and thereafter remained unchanged through 200 kGy. ε-Caprolactam in PA-6 was also dose independent, in the range of 5-200 kGy, but its level (122-164 ppm) was found to be higher than those (71 ppm) of non-irradiated sample. As for PVC, the quantity of vinyl chloride tended to increase from 8 to 18 ppm at 5-200 kGy.

Original languageEnglish
Pages (from-to)1055-1059
Number of pages5
JournalRadiation Physics and Chemistry
Volume75
Issue number9
DOIs
Publication statusPublished - 2006 Sep

Keywords

  • Bisphenol-A
  • Irradiation
  • Monomer residues
  • PA-6
  • PC
  • PS
  • PVC
  • Styrene monomer
  • Vinyl chloride
  • ε-Caprolactam

ASJC Scopus subject areas

  • Radiation

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