Bambang Joni Pamilih, Heru Suryanto, Aminnudin, Abyan Farras Putra, Jibril Maulana
Polylactic acid is an aliphatic polyester used as an environmentally friendly packaging application. The advantages of PLA are that it is easy to decompose and renewable and is made from renewable natural resources. Therefore, the material is extruded at different barrel temperatures to determine the effect of increasing the barrel temperature. This study aims to determine the changes in the mechanical properties, morphology, and structure of the polylactic acid filament by extrusion process with different barrel temperatures in the heating zone. Recycling is done in the third extrusion with different barrel temperature zone variations. Investigation of mechanical properties was determined by static tensile test, fracture morphology analysis of tensile test using SEM. The tensile test results show a gradual increase in tensile strength at each increase in the barrel temperature zone, from 60.48 MPa to an increase of 66.71 MPa, but at high barrel temperatures, the tensile strength decreases to 60.74 MPa. Morphological analysis of the tensile test fracture samples showed morphological changes, where morphological defects in the form of fibrous, voids, and scaly appeared after increasing the barrel temperature. Therefore, the barrel temperature parameter is not recommended to exceed 200℃ during the extrusion process. © 2024 American Institute of Physics Inc.. All rights reserved.
Department of Mechanical Engineering, Faculty of Engineering, State University of Malang, Semarang Street No. 5, East Java, Malang, 65145, Indonesia