Recyclable Polymer Matrix Nanocomposites for Sustainable Packaging Solutions

Abstract

This study explores the potential of recyclable polymer matrix nanocomposites for sustainable packaging solutions. Nanocomposites were created by combining different polymer matrices (PET, PLA, HDPE, PP) with various types of nanofillers (Clay, Graphene, Cellulose, Nanoclay), and the nanofiller content varied from 2% to 5%. Graphene-based nanocomposites demonstrated exceptional tensile strength (55 MPa) and Young's modulus (4.0 GPa) in comparison to alternative formulations, as indicated by mechanical properties analysis. Graphene nanocomposites demonstrated the most effective barrier properties, with the lowest oxygen permeability (1.0 cm^3/m^2·day·atm) and water vapor transmission rate (2.3 g/m^2·day). The analysis revealed that cellulose nanocomposites exhibited the highest glass transition temperature (72°C) and melting temperature (185°C) in terms of their thermal properties. The findings highlight the wide range of benefits that recyclable polymer matrix nanocomposites can bring to sustainable packaging applications. These include improved mechanical strength, enhanced barrier performance, and increased thermal stability. This underscores their versatility and potential in this field. Additional research is necessary to enhance synthesis methods, investigate new nanofiller materials, and assess long-term performance in real-world packaging scenarios.