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Pure polylactic acid is widely used for packaging, but it has limitation due to its oxygen barrier property. We investigated oxygen scavenging active packaging by incorporating synthetic antioxidant butylated hydroxyl toluene (BHT) into matrix composite film (plasticized polylactic acid-natrium montmorillonite/NaMMT) using direct casting. The 2.2-Diphenyl-1-picrylhydrazyl (DPPH) or antiradical activity was used to investigate oxygen scavenging of butylated hydroxytoluene in PLA active composite film during 15 storage days at 30oC. Oxygen permeability was calculated by using ASTM F3136-15 method. BHT oxidation rate of the active film composite film was 0.043 times per day. The BHT was estimated fully deteriorate after 108 storage days. The research revealed that the oxygen barrier property improved by 2.3 times compared to the passive polylactic composite film. BHT concentration between 5-10% was enough to significantly reduce oxygen permeability value. Oxygen permeability value and antiradical activity deterioration was significant correlated at 97 to 99 percents.
Lastriyanto, Anang; Yuniarto, Kurniawan; Muvianto, Cahyo Mustiko Okta; and Kurniawan, Hary -.
"Antioxidant Deterioration in Active Composite Film during Storage,"
Journal of Applied Packaging Research: Vol. 13:
2, Article 5.
Available at: https://scholarworks.rit.edu/japr/vol13/iss2/5