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Composite filaments OF PHBV reinforced with ZrO2·nH2O particles for 3D printing

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Abstract

Fused deposition modeling (FDM) has been a widely applied technology as one of the most practical tools of additive manufacturing in terms of industry 4.0. Biopolymer filaments obtained by extrusion can be a promising material for scaffold manufacturing by FDM 3D printers. In this work, composite filaments of polyhydroxybutyrate-cohydroxyvalerate (PHBV) reinforced with ZrO2·nH2O particles were obtained (1–10% wt/wt.) and characterized aiming the production of scaffolds by FDM process. ZrO2·nH2O particles were prepared and mixed to the PHBV in a mini-extruder. The pristine PHBV and composite filaments (PHBV/ZrO2) were characterized by stereomicroscopy, scanning electron microscopy (particle analysis), thermogravimetric analysis (TGA and DSC), X-ray diffractometry, Fourier transformed infrared spectroscopy , Vickers microhardness test (HV), and relative density. The addition of ZrO2·nH2O particles altered the behavior of the PHBV matrix: increased the number of ZrO2·nH2O particles in the composite filament surface, enhanced the amorphous phase and the relative density. The PHBV/7.5%ZrO2 sample presented higher microhardness. It was possible to print the filaments by FDM and the appearance of the scaffolds obtained was a cylindrical structure with rounded inner pores, contributing to the future application in regenerative medicine.

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Acknowledgements

The authors are grateful for the research support by FAPERJ (process E-26 /260.026/ 2018 and E-26 /010.001800/2015).

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  1. Universidade do Estado do Rio de Janeiro (UERJ), Rodovia Presidente Dutra km 298, Polo Industrial, Resende, Rio de Janeiro, 27537-000, Brazil

    Júlia Gomes de Carvalho, Noelle Cardoso Zanini & Daniella Regina Mulinari

  2. Universidade de Araraquara (UNIARA), Rua Carlos Gomes, 1217, São Paulo, Araraquara, 14801-320, Brazil

    Amanda Maria Claro, Nayara Cavichiolli do Amaral & Hernane S. Barud

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  1. Júlia Gomes de Carvalho
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de Carvalho, J.G., Zanini, N.C., Claro, A.M. et al. Composite filaments OF PHBV reinforced with ZrO2·nH2O particles for 3D printing. Polym. Bull. 79, 2113–2132 (2022). https://doi.org/10.1007/s00289-021-03610-3

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