Biocompatible Composite Filaments Printable by Fused Deposition Modelling Technique: Selection of Tuning Parameters by Influence of Biogenic Hydroxyapatite and Graphene Nanoplatelets Ratios.

Autor: Mocanu AC; Department of Metallic Materials Science, Physical Metallurgy, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania., Constantinescu AE; Department of Metallic Materials Science, Physical Metallurgy, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania., Pandele MA; Department of Analytical Chemistry and Environmental Engineering, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania.; Advanced Polymer Materials Group, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania., Voicu ȘI; Department of Analytical Chemistry and Environmental Engineering, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania.; Advanced Polymer Materials Group, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania., Ciocoiu RC; Department of Metallic Materials Science, Physical Metallurgy, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania., Batalu D; Department of Metallic Materials Science, Physical Metallurgy, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania., Semenescu A; Department of Engineering and Management of Obtaining Metallic Materials, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania.; Academy of Romanian Scientists, 3 Ilfov Str., District 5, 050044 Bucharest, Romania., Miculescu F; Department of Metallic Materials Science, Physical Metallurgy, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, J Building, District 6, 060042 Bucharest, Romania., Ciocan LT; Prosthetics Technology and Dental Materials Department, 'Carol Davila' University of Medicine and Pharmacy, 37 Dionisie Lupu Street, District 1, 020022 Bucharest, Romania.
Jazyk: angličtina
Zdroj: Biomimetics (Basel, Switzerland) [Biomimetics (Basel)] 2024 Mar 20; Vol. 9 (3). Date of Electronic Publication: 2024 Mar 20.
DOI: 10.3390/biomimetics9030189
Abstrakt: The proposed strategy for the extrusion of printable composite filaments follows the favourable association of biogenic hydroxyapatite (HA) and graphene nanoplatelets (GNP) as reinforcement materials for a poly(lactic acid) (PLA) matrix. HA particles were chosen in the <40 μm range, while GNP were selected in the micrometric range. During the melt-mixing incorporation into the PLA matrix, both reinforcement ratios were simultaneously modulated for the first time at different increments. Cylindrical composite pellets/test samples were obtained only for the mechanical and wettability behaviour evaluation. The Fourier-transformed infrared spectroscopy depicted two levels of overlapping structures due to the solid molecular bond between all materials. Scanning electron microscopy and surface wettability and mechanical evaluations vouched for the (1) uniform/homogenous dispersion/embedding of HA particles up to the highest HA/GNP ratio, (2) physical adhesion at the HA-PLA interface due to the HA particles' porosity, (3) HA-GNP bonding, and (4) PLA-GNP synergy based on GNP complete exfoliation and dispersion into the matrix.
Databáze: MEDLINE
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