PMID- 12623680
OWN - NLM
STAT- MEDLINE
DCOM- 20030326
LR  - 20131121
IS  - 0265-203X (Print)
IS  - 0265-203X (Linking)
VI  - 19
IP  - 12
DP  - 2002 Dec
TI  - Effect of ionizing radiation on the physicochemical and mechanical properties of 
      commercial monolayer flexible plastics packaging materials.
PG  - 1190-9
AB  - The effect of gamma-radiation doses (5, 10, 30 kGy) on the mechanical properties, 
      gas and water vapour permeability, infrared (IR) spectra, and overall migration 
      into aqueous and alternative fatty food simulants of commercial monolayer 
      flexible packaging films ethylene vinyl acetate (EVA), high-density polyethylene 
      (HDPE), polystyrene (PS), bi-axially oriented polypropylene (BOPP), low-density 
      polyethylene (LDPE) and Ionomer was studied. For comparison purposes, respective 
      non-irradiated (control) films were also studied. The results showed that 
      radiation doses of 5, 10 and 30 kGy did not induce any statistically significant 
      changes in the permeability of all studied films to gases (oxygen and carbon 
      dioxide) and water vapour. Likewise, IR spectra of all studied films showed no 
      significant differences after all absorbed doses. The mechanical properties 
      (tensile strength, percentage elongation at break and Young's modulus) of all 
      studied films remained unaffected after absorbed doses of 5 and 10 kGy. In 
      contrast, the tensile strength of HDPE, BOPP and Ionomer films irradiated at a 
      dose of 30kGy decreased. In addition, the percentage elongation at break of LDPE 
      and Ionomer films irradiated at a dose of 30 kGy decreased while Young's modulus 
      of all samples remained unaffected. All mechanical properties of PS and EVA films 
      remained unaffected after radiation at 30 kGy. Radiation (all absorbed doses) 
      resulted in no statistically significant differences in overall migration values 
      into distilled water for all studied films. For 3% aqueous acetic acid, absorbed 
      doses of 5 and 10 kGy did not affect overall migration values of all investigated 
      samples with the exception of the Ionomer film, for which the overall migration 
      value decreased at 10 kGy. An absorbed dose of 30 kGy caused an increase in BOPP 
      overall migration values and a decrease in Ionomer overall migration values. In 
      contrast, a dose of 30 kGy induced no changes in overall migration values of EVA, 
      HDPE, LDPE and PS films into the same simulant. There were no statistically 
      significant differences in overall migration values of EVA, PS and LDPE films 
      into iso-octane for all absorbed doses. In contrast, a dose of 30 kGy resulted in 
      an increase in overall migration values of BOPP and a respective decrease in HDPE 
      and Ionomer films.
FAU - Goulas, A E
AU  - Goulas AE
AD  - Department of Materials Science and Technology, University of Ioannina, GR-45110 
      Ioannina, Greece. aegoulas@cc.uoi.gr
FAU - Riganakos, K A
AU  - Riganakos KA
FAU - Badeka, A
AU  - Badeka A
FAU - Kontominas, M G
AU  - Kontominas MG
LA  - eng
PT  - Journal Article
PL  - England
TA  - Food Addit Contam
JT  - Food additives and contaminants
JID - 8500474
RN  - 0 (Plastics)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Dose-Response Relationship, Radiation
MH  - Food Contamination/*analysis
MH  - *Food Irradiation
MH  - *Food Packaging
MH  - *Gamma Rays
MH  - Humans
MH  - Permeability/radiation effects
MH  - Plastics/*radiation effects
MH  - Radiation Dosage
MH  - Spectrophotometry, Infrared
MH  - Tensile Strength/radiation effects
MH  - Water/chemistry
EDAT- 2003/03/08 04:00
MHDA- 2003/03/27 05:00
CRDT- 2003/03/08 04:00
PHST- 2003/03/08 04:00 [pubmed]
PHST- 2003/03/27 05:00 [medline]
PHST- 2003/03/08 04:00 [entrez]
AID - 6EF828BFTFKKXMQ9 [pii]
AID - 10.1080/0265203021000012402 [doi]
PST - ppublish
SO  - Food Addit Contam. 2002 Dec;19(12):1190-9. doi: 10.1080/0265203021000012402.