Naslov
PREPARATION AND CHARACTERIZATION OF PP AND PE COMPOSITE FILMS CONTAINING ROSEMARY EXTRACT

Autori
Jakić, Miće ; Naletilić, Iva ; Skroza, Danijela

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts, 22 th International Conference on Materials, Tribology & Recycling MATRIB 2022 / Bušić, Matija ; Leder Horina, Jasna ; Tropša, Vlado - Varaždin : University North-University Center Varaždin Center for Digital Printing, 2022, 29-29

Skup
22nd International Conference on Materials (MATRIB 2022)

Mjesto i datum
Vela Luka, Hrvatska, 30.06.2022. - 03.07.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
polyethylene, polypropylene, food packaging

Sažetak
Different polymers like polyethylene (PE) and polypropylene (PP), have been utilized for food packaging due to its low cost and good barrier properties. In order to obtain active food packaging, into PE and PP films many functional additives like antioxidant and antimicrobial agents have been added. These agents may migrate from the packaging to the food product or to the surrounding headspace, and can extend the shelf life of food, improving its safety and quality properties. For this purpose, natural compounds instead of synthetic additives could be used. Among plants reported to have anti-oxidative activity, rosemary extract (ER) is widely used in many food applications. The main objective of this work was to prepare the PE/ER and PP/ER composite films with 10 mass.% of ES via hot melt extrusion after which they are hot-pressed. In order to determine the interactions of polymer and extract in the composite the Fourier transform infrared spectroscopy (FT-IR) was utilized. Differential scanning calorimetry (DSC) was used to detect influence of ER on the thermal characteristics of polymer matrix. FT-IR spectra were recorded on Perkin Elmer Spectrum Two spectrometer by the ATR technique (diamond, 45° angle) in the measurement range of 4000–450 cm-1 (10 scans, resolution 4 cm-1). The DSC curves were recorded by the Mettler Toledo DSC 823e in the nitrogen atmosphere (30 cm3min-1) at a rate of 10 °Cmin-1 from 25 to 220 °C. Based on the characteristic PE and PP absorption bands, their intensity, shape and position it can be concluded that ER addition had no effect on the structure of polymer matrix. DSC curves revealed that characteristic melting and crystallization transition of polymer matrix practically remained unchanged upon ER addition. Hence, the main goal of this work was achieved.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

Napomena
Glavni autori: Miće Jakić, Iva Naletilić

POVEZANOST RADA