A study on the prospects of vacuum gamma irradiation to enhance crosslinking for 3D-Printing PLA/MCC biocomposite filaments

3D-printing or Additive Manufacturing (AM) has been growing as a rapid manufacturing process for many different applications, with Poly (Lactic Acid) as one of the most used materials for 3D-printing. PLA shows great promise for many applications to achieve the goals of the SDGs due to its biodegrad...

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Bibliographic Details
Published inPhysics open Vol. 15; p. 100154
Main Authors Almasri, Rashed, Akiyama, Yoko, Manabe, Yuichiro, Sato, Fuminobu
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2023
Elsevier
Subjects
Biocomposite
Gamma-ray irradiation
Microcrystalline cellulose
Poly(lactic acid)
Tensile strength
Thermal stability
Poly(lactic acid)
Gamma-ray irradiation
Biocomposite
Microcrystalline cellulose
Tensile strength
Thermal stability
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Summary:3D-printing or Additive Manufacturing (AM) has been growing as a rapid manufacturing process for many different applications, with Poly (Lactic Acid) as one of the most used materials for 3D-printing. PLA shows great promise for many applications to achieve the goals of the SDGs due to its biodegradability and biocompatibility but lacks when it comes to mechanical strength and thermal resistance. In this study, microcrystalline cellulose (MCC) fibers were introduced as a reinforcement to PLA. The biocomposite filaments were irradiated in a vacuum to enhance the crosslinking. Gamma-ray irradiation in a vacuum has successfully shown signs of crosslinking by increasing the tensile strength and thermal stability of the biocomposite, indicating an enhancement for PLA/MCC for various applications. On the other hand, changes in thermal properties also indicated that irradiation may reduce the processability of the composite, so it is necessary to study the conditions under which the mechanical properties and processability are compatible. •PLA pellets were mixed with MCC at 3 wt% and extruded as 3D-printing filaments.•The filaments were γ-ray irradiated up to 50 kGy in vacuum.•Mechanical testing showed increase in strength by irradiation.•DSC showed improvements in thermal stability by irradiation.•FT/IR spectra showed no obvious change in chemical structure by irradiation.
ISSN:2666-0326
2666-0326
DOI:10.1016/j.physo.2023.100154