GIDA İLE TEMAS EDEN POLİVİNİL KLORÜR BAZLI STREÇ FİLMLERDEKİ MİGRASYONUN POLİLAKTİK ASİT KATMANI İLE ENGELLENMESİ

Abstract

Bu çalışmada, Polivinil klorür (PVC) filmlerden geçen kalıntıların engellenmesi için biyobozunur polilaktik asit (PLA) kaplamaların etkinlikleri araştırılmıştır. Kloroform içerisinde ağırlıkça %5, 10, 15 ve 20 konsantrasyonlarda hazırlanan PLA filmler, sıcak preste (130 °C, 5 dk., 5 t) PVC film yüzeylerine ısıl olarak yapıştırılmıştır. Hazırlanan bu iki katlı filmlerde fiziksel, mekanik, FTIR ve migrasyon analizleri gerçekleştirilmiştir. PLA kaplama ile birlikte filmlerin kalınlıklar artmış, mekanik özellikleri azalmış ve renk değerlerinde bazı değişikler meydana gelmiştir. Sıcak pres sonucu filmlerin her iki yüzeyinde de yapısal bir değişiklik olmadığı FTIR ile tespit edilmiştir. Toplam migrasyon analizlerinden sulu gıda benzerlerini ile yapılan testlerde migrasyon gözlenmezken, yağlı gıda benzerlerinde migrasyon tespit edilmiştir. GC-MS ile yapılan spesifik migrasyon analizinde ise di-2-etilhekzil ftalat (DEHP) migrasyonu PLA kaplama ile birlikte %50 oranında azalmıştır. PVC streç filmlerin PLA ile kaplanmasının migrasyonu azaltmak için umut verici bir uygulama olabileceği sonucuna varılmıştır.

Keywords

• PVC
• PLA
• Film
• Kaplama
• Migrasyon
• Fonksiyonel bariyer

Project Number

182N29

PREVENTING OF MIGRATION IN FOOD CONTACT POLYVINYL CHLORIDE-BASED STRETCH FILMS WITH POLYLACTIC ACID LAYER

Abstract

In this study, the effectiveness of biodegradable polylactic acid (PLA) coatings for the prevention of residues migrating through polyvinyl chloride (PVC) films was investigated. PLA films prepared in chloroform at concentrations of 5, 10, 15 and 20 wt% were heat sealed to PVC film surfaces in a hot press (130 °C, 5 min, 5 tons). Physical, mechanical, FTIR and migration analyses were performed on these two-layer films. With PLA coating, the thickness of the films increased, mechanical properties decreased and some changes in color values occurred. It was determined by FTIR that there was no structural change on both surfaces of the films as a result of hot pressing. From the overall migration analysis, no migration was observed in the tests with aqueous food simulants, while migration was detected in fatty food simulants. In the specific migration analysis by GC-MS, di-2-ethylhexyl phthalate (DEHP) migration decreased by 50% with PLA coating. It is concluded that PLA coating of PVC stretch films may be a promising application to reduce migration.

Keywords

• PVC
• PLA
• film
• coating
• migration
• functional barrier

Supporting Institution

This research was financially supported by Bursa Technical University Scientific Research Projects Office with a project number of 182N29.

Project Number

182N29

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