Characterization and Analysis of Commercial Polyethylene Bags as a Prior Step to their Mechanical Recycling: A case Study in Granada, Spain

Abstract

Increasing world plastic production generates million tonnes of waste. Flexible packaging bags specially suppose a challenge in mechanical recycling because of their singular properties. This research aims to provide a physicalchemical characterization of commercial polyethylene bags in order to facilitate a future improvement or adaptation of recycling processes to them. Firstly, properties such as dimensions and density were measured in regular and garbage bags samples purchased in different establishments of Granada (Spain). Then, a chemical classification in three groups (HDPE, LDPE, mixture) was achieved according to Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC) tests. Finally, ash content was also determined.