Mechanical and viscoelastic properties of polyethylene-based microfibrillated composites from 100% recycled resources

Mohammadreza Nofar*, Beril Saadet Yenigul, Burcu Ozdemir, Ceren Yargici Kovanci, Abbas Ghanbari, Amirjalal Jalali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In this study, recycled polyethylene (rPE) based microfibrillated composites (MFCs) were developed while incorporating recycled poly(ethylene terephthalate) (rPET) and recycled polyamide 6 (rPA) as the reinforcing fibrillar phases at a given weight ratio of 80 wt% (rPE)/20 wt% (rPET or rPA). The blends were first melt processed using a twin-screw extruder. The extrudates were then cold stretched at a drawing ratio of 2.5 to form rPET and rPA fibrillar structures. Next, the pelletized drawn samples were injection molded at the barrel temperatures below the melting temperatures of rPET and rPA. The tensile, three-point bending, impact strength, dynamic thermomechanical, and rheological properties of the fabricated MFCs were analyzed. The effects of injection molding barrel temperature (i.e., 150°C and 190°C) and extrusion melt processing temperature (i.e., 250°C and 275°C) on the generated fibrillar structure and the resultant properties were explored. A strong correlation between the fibrillar morphology and the mechanical properties with the extrusion and injection molding temperatures was observed. Moreover, the ethylene/n-butyl acrylate/glycidyl methacrylate (EnBAGMA) terpolymer and maleic anhydride grafted PE (MAH-g-PE) were, respectively, melt processed with rPE/rPET and rPE/rPA6 blends as compatibilizers. The compatibilizers refined the fibrillar structure and remarkably influenced mechanical properties, specifically the impact strength.

Original languageEnglish
Article number50793
JournalJournal of Applied Polymer Science
Volume138
Issue number32
DOIs
Publication statusPublished - 20 Aug 2021

Bibliographical note

Publisher Copyright:
© 2021 Wiley Periodicals LLC.

Keywords

  • composites
  • extrusion
  • mechanical properties
  • recycling
  • thermoplastics

Fingerprint

Dive into the research topics of 'Mechanical and viscoelastic properties of polyethylene-based microfibrillated composites from 100% recycled resources'. Together they form a unique fingerprint.

Cite this