2023
DOI: 10.1016/j.jmapro.2023.05.099
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Mechanical, physical, and degradation properties of 3D printed PLA + Mg composites

Milad Zeynivandnejad,
Mohsen Moradi,
Alireza Sadeghi
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Cited by 6 publications
(5 citation statements)
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“…We propose two possible explanations for it, which are not necessarily exclusive: Ga/OA NPs enhance the degradation of PLA. This is expected as a result of the higher thermal conductivity of the metallic liquid Ga core [ 27 ], leading to a higher temperature in the vicinity of Ga/OA NPs and catalytic activity of the gallium oxide/hydroxide surface layer, which could accelerate the hydrolytic degradation of PLA as with ZnO, CaO or silicate nanofillers [ 47 , 97 , 98 ], with the additional possible enhancement by a local change in pH due to the dissolution of Ga, as in the case of Mg [ 99 ]. Weak interactions between Ga/OA NPs and PLA enable the easy separation of these two nanocomposite components, especially when additional stronger interactions with water and other liquid broth components are possible.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…We propose two possible explanations for it, which are not necessarily exclusive: Ga/OA NPs enhance the degradation of PLA. This is expected as a result of the higher thermal conductivity of the metallic liquid Ga core [ 27 ], leading to a higher temperature in the vicinity of Ga/OA NPs and catalytic activity of the gallium oxide/hydroxide surface layer, which could accelerate the hydrolytic degradation of PLA as with ZnO, CaO or silicate nanofillers [ 47 , 97 , 98 ], with the additional possible enhancement by a local change in pH due to the dissolution of Ga, as in the case of Mg [ 99 ]. Weak interactions between Ga/OA NPs and PLA enable the easy separation of these two nanocomposite components, especially when additional stronger interactions with water and other liquid broth components are possible.…”
Section: Discussionmentioning
confidence: 99%
“…Ga/OA NPs enhance the degradation of PLA. This is expected as a result of the higher thermal conductivity of the metallic liquid Ga core [ 27 ], leading to a higher temperature in the vicinity of Ga/OA NPs and catalytic activity of the gallium oxide/hydroxide surface layer, which could accelerate the hydrolytic degradation of PLA as with ZnO, CaO or silicate nanofillers [ 47 , 97 , 98 ], with the additional possible enhancement by a local change in pH due to the dissolution of Ga, as in the case of Mg [ 99 ].…”
Section: Discussionmentioning
confidence: 99%
“…The in vitro qualitative study developed on MC7s epithelial line showed improvements in terms of cell adhesion under magnesium alloy reinforcement. Also based on 3D manufacturing technology, it is important to highlight the article developed by Zeynivandnejad, M. et al [ 112 ], in which the importance of the proposed printing direction (0, ±45, 45 and 90°) on the final properties of the material (up to 1 wt.% reinforcement) was analyzed. By DSC analysis, again a slight increase in the Tg value with the presence of magnesium was demonstrated, while in mechanical terms, in the 0° direction, i.e., parallel to the test direction, the samples showed higher strength.…”
Section: Bioabsorbable Composite Materials Based On Polymeric Matrix ...mentioning
confidence: 99%
“…PLA filaments with particle reinforcement are a new trend in the development of these composites. The physical, mechanical and degradation properties of the PLA matrix with magnesium (Mg) particles were investigated recently [11,12]. The study showed that the addition of Mg particles in PLA promotes the entanglement of polymer chains, lowers the mobility of PLA molecular chains and raises the peak temperature (glass transition temperature) [11].…”
Section: Introductionmentioning
confidence: 99%
“…Studying 3D printing parameters shows that when the filling orientation or nozzle motion pattern direction changes (from 0 to 90 degrees) from the tensile direction, the tensile strength decreases in the PLA specimen and all composite systems [12].…”
Section: Introductionmentioning
confidence: 99%