Food Packaging Materials for Irradiation

Reasons for Odor Formation in Plastic Materials

“…18 The low doses of -irradiation (5-10 kGy) did not significantly affect the bisphenol-A level in polycarbonate film. 18 But its level increased to 473 mg/g when the PC film was exposed to 30 kGy, and it did not change when higher doses were used (60, 100, and 200 kGy). 18 The increase in bisphenol-A level in PC film exposed to 30 kGy could be attributed to the predominant crosslinking effect of small doses of -irradiation (5-10 kGy) and the pronounced scission of the main chain at higher doses (30-200 kGy) by the cleavage of the weak carbonyl bond between the phenyl rings.…”

“…18 But its level increased to 473 mg/g when the PC film was exposed to 30 kGy, and it did not change when higher doses were used (60, 100, and 200 kGy). 18 The increase in bisphenol-A level in PC film exposed to 30 kGy could be attributed to the predominant crosslinking effect of small doses of -irradiation (5-10 kGy) and the pronounced scission of the main chain at higher doses (30-200 kGy) by the cleavage of the weak carbonyl bond between the phenyl rings. 18 The amount of vinyl chloride extracted from PVC significantly increased from 8 to 18 ppm as the dose of irradiation increased to 200 kGy.…”

“…17 Polyamide-6, a food packaging polymer, was irradiated with a dose ranging 5-200 kGy. 18 The dose of -irradiation significantly increased the formation of -caprolactam in PA-6, ranging between 122 and 164 ppm in the dose range 5-200 kGy. 18 The low doses of -irradiation (5-10 kGy) did not significantly affect the bisphenol-A level in polycarbonate film.…”

“…18 The dose of -irradiation significantly increased the formation of -caprolactam in PA-6, ranging between 122 and 164 ppm in the dose range 5-200 kGy. 18 The low doses of -irradiation (5-10 kGy) did not significantly affect the bisphenol-A level in polycarbonate film. 18 But its level increased to 473 mg/g when the PC film was exposed to 30 kGy, and it did not change when higher doses were used (60, 100, and 200 kGy).…”

“…18 The increase in bisphenol-A level in PC film exposed to 30 kGy could be attributed to the predominant crosslinking effect of small doses of -irradiation (5-10 kGy) and the pronounced scission of the main chain at higher doses (30-200 kGy) by the cleavage of the weak carbonyl bond between the phenyl rings. 18 The amount of vinyl chloride extracted from PVC significantly increased from 8 to 18 ppm as the dose of irradiation increased to 200 kGy. 18 The dose-dependent formation of vinyl chloride in PVC could be due to the extensive main chain scission effect with increasing irradiation dose.…”