Influence of size and crystallinity of nanohydroxyapatite (nHA) particles on the properties of Polylactic Acid/nHA nanocomposite scaffolds produced by 3D printing

Rodovalho, Arthur João Reis Lima; Barbosa, Willams Teles; Vieira, Jaqueline Leite; Oliva, Caio Athayde de; Gonçalves, Ana Paula Bispo; Cardoso, Pollyana da Silva Melo; Modolon, Henrique Borba; Montedo, Oscar Rubem Klegues; Arcaro, Sabrina; Hodel, Katharine Valéria Saraiva; Soares, Milena Botelho Pereira; Ajayan, Pulickel M.; Barbosa, Josiane Dantas Viana

doi:10.1016/j.jmrt.2024.04.048

Journal of Materials Research and Technology

2024

DOI: 10.1016/j.jmrt.2024.04.048

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Influence of size and crystallinity of nanohydroxyapatite (nHA) particles on the properties of Polylactic Acid/nHA nanocomposite scaffolds produced by 3D printing

Arthur João Reis Lima Rodovalho,

Willams Teles Barbosa,

Jaqueline Leite Vieira

et al.

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2024

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Cited by 2 publications

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Mechanical properties and microstructure of hemp hurd reinforced polylactide biocomposites for 3D printing

Xiao,

Chevali,

Song

et al. 2024

Polymer Composites

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Polylactide (PLA) biocomposite filaments containing hemp hurd (HH) of variable particle size were evaluated in comparison with injection‐molded counterparts using single/twin screw extrusion in this study. HH particle size (35, 50, and 160 μm) was parametrically investigated for its efficacy within PLA/HH biocomposites and fused filament fabrication (FFF)‐printed parts by assessing its effect on performance through rheological, microstructural, mechanical, and surface finish analyses. In addition, melt flow indexing, rheometry, scanning electron microscopy, mechanical testing, and x‐ray computed tomography were utilized to analyze microstructure, mechanical performance, and surface roughness. With an increase in particle size of the HH, the corresponding biocomposites showed increased flowability, and the injection‐molded specimens showed increased impact strength. The FFF printing of the biocomposite filament presented no challenges, and the mechanical properties of FFF parts enhanced with a particle size smaller than the printed layer thickness. Compared with injection‐molded parts, FFF‐printed samples showed higher impact strength. The FFF‐printed PLA/HH biocomposite samples showed considerable potential over their injection molded alternatives for low‐volume specialized applications.Highlights Polylactide (PLA)/hemp hurd (HH) biocomposite filaments with different particle sizes of HH were developed. Melt flow and impact strength increased when HH particle size increased. 3D‐printed part porosity and roughness increased when HH particle size increased. Higher HH particle size enhanced the mechanical performance of 3D‐printed parts. 3D‐printed parts exhibited higher impact strength than injection molded parts

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Mechanical properties and microstructure of hemp hurd reinforced polylactide biocomposites for 3D printing

Xiao,

Chevali,

Song

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

Autonomous living materials and bone-inspired scaffolds motivated by human osteogenic microenvironment mechanisms

Chen,

Ramakrishna,

Jin

et al. 2024

Materials & Design

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Influence of size and crystallinity of nanohydroxyapatite (nHA) particles on the properties of Polylactic Acid/nHA nanocomposite scaffolds produced by 3D printing

Cited by 2 publications

References 70 publications

Mechanical properties and microstructure of hemp hurd reinforced polylactide biocomposites for 3D printing

Mechanical properties and microstructure of hemp hurd reinforced polylactide biocomposites for 3D printing

Autonomous living materials and bone-inspired scaffolds motivated by human osteogenic microenvironment mechanisms

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