Investigation of Physio-Mechanical Properties of Recycled PET Derived from Post-Consumer Soda and Water Bottles for Sustainable 3D Printing via Fused Deposition Modeling
摘要
This research investigated the viability of utilizing recycled polyethylene terephthalate (RPET) derived from post-consumer PET soda bottles (RPET-SF) and PET water bottles (RPET-WF) as a 3D printing material. The physical and mechanical properties of RPET-SF and RPET-WF samples were examined across varying temperature conditions and compared with those of virgin PET (VPET) samples. The findings indicated that RPET-SF samples exhibited the lowest density, hardness, and average surface roughness values. However, tensile tests revealed that RPET-SF printed at 250 °C demonstrated the highest tensile strength (TS). Specifically, RPET-SF displayed a tensile modulus (E), yield strength (σy), and ultimate tensile strength (UTS) of 1250.8 ± 70 MPa, 23.31 ± 1.5 MPa, and 34.08 ± 3 MPa, respectively. These values were 37.8%, 19.3%, and 56.62% higher than those of VPET samples. Additionally, RPET-SF printed at 260 °C exhibited the maximum flexural strength of 44.78 ± 2.33 MPa. In conclusion, the obtained data suggest that recycled PET can be effectively employed as a 3D printing material, and this study provides valuable insights for achieving enhanced mechanical performance with recycled PET.