Mechanical and Barrier Properties of Blended Biopolymer Nanocomposite Packaging Films with Metal Organic Frameworks


Koshki S., Deniz S.

Asiachem-19.Asian Chemical Congress, İstanbul, Turkey, 9 - 14 July 2023, pp.270

  • Publication Type: Conference Paper / Summary Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.270
  • Yıldız Technical University Affiliated: Yes

Abstract

The growing focus on seeking raw materials from renewable sources and efforts to reduce the environmental impact of plastic has created a greater demand for the development of biodegradable food packaging because they are recyclable, non-toxic, and derived from natural resources. İnnovations in food packaging with the development of composites based on biopolymers have effectively improved the quality and safety of food, which have attracted tremendous attention in the industry. In this study, the blended nanocomposite films of PLA/PCL, PHA/PBS, and PHA/PHBV with different metal organic frameworks (MOFs) by solvent-casting method have been investigated to develop them as an environmentally friendly material with improved mechanical and barrier properties, enabling their usage as replacements for traditional petroleum-based packaging materials. The morphology and stability of film samples were evaluated using thermogravimetric analysis, differential scanning calorimetry (DSC), gel permeation chromatography, X-ray diffraction, and scanning electron microscopy (SEM). Mechanical properties, water vapor permeability (WVP), and oxygen transmission rate (OTR) of blended bionanocomposite films were characterized to determine the effect of the type and concentration of MOF nanoparticles. The tensile strength, storage modulus and Tg were improved owing to the reinforcement of MOFs nanocrystals in the blended polymers/MOFs bionanocomposites. All the films prepared with MOFs gain the increase the resistance to oxygen and water vapor permeabilities.