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

Q2 Physics and Astronomy Physics Open Pub Date : 2023-05-01 DOI:10.1016/j.physo.2023.100154

Rashed Almasri, Yoko Akiyama, Yuichiro Manabe, Fuminobu Sato

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引用次数: 1

Abstract

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.

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真空辐照增强3d打印PLA/MCC生物复合长丝交联的前景研究

3d打印或增材制造(AM)已经成为许多不同应用的快速制造工艺，聚乳酸(乳酸)是3d打印最常用的材料之一。由于其生物可降解性和生物相容性，PLA在实现可持续发展目标的许多应用中显示出巨大的前景，但在机械强度和耐热性方面缺乏。本研究引入微晶纤维素(MCC)纤维作为PLA的增强材料。生物复合材料丝在真空中辐照以增强交联。真空中的伽马射线辐照通过提高生物复合材料的拉伸强度和热稳定性，成功地显示出交联的迹象，表明PLA/MCC在各种应用中的增强。另一方面，热性能的变化也表明辐照会降低复合材料的可加工性，因此有必要研究力学性能与可加工性相容的条件。

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