Effect of micron sized silver particles concentration on the adhesion induced by sintering and antibacterial properties of hydroxyapatite microcomposites

Maidaniuc, Andreea; Miculescu, Marian; Voicu, Ştefan Ioan; Ciocan, Lucian Toma; Niculescu, Marius; Corobea, Mihai Cosmin; Rada, M.; Miculescu, Florin

doi:10.1080/01694243.2016.1163808

Cited by 29 publications

(32 citation statements)

References 36 publications

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“…These are observed both in a dispersed form and in the form of large crystals (agglomerates). As the amount of the HA particles in the film's structure increases, large crystals have a higher volume [29,37,38]. Increasing the size of the crystals is a consequence of the poor dispersion of the inorganic filler in the polymer solution, the ultrasonication time being the same for all the samples.…”

Section: Resultsmentioning

confidence: 99%

“…The hydroxyapatite particles were synthesized from spongy bone samples which were obtained after removal of the cortical components in accordance with a previously described procedure reported in the literature [27][28][29]. Firstly, bovine bone samples were mechanically cleaned, followed by a heat treatment at 500 • C for one hour in order to remove organic components.…”

Section: Synthesis Of Hydroxyapatite Particlesmentioning

confidence: 99%

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Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films

Pandele

Constantinescu

Radu³

et al. 2020

Materials

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This article presents a facile synthesis method used to obtain new composite films based on polylactic acid and micro-structured hydroxyapatite particles. The composite films were synthesized starting from a polymeric solution in chloroform (12 wt.%) in which various concentrations of hydroxyapatite (1, 2, and 4 wt.% related to polymer) were homogenously dispersed using ultrasonication followed by solvent evaporation. The synthesized composite films were morphologically (through SEM and atomic force microscopy (AFM)) and structurally (through FT-IR and Raman spectroscopy) characterized. The thermal behavior of the composite films was also determined. The SEM and AFM analyses showed the presence of micro-structured hydroxyapatite particles in the film’s structure, as well as changes in the surface morphology. There was a significant decrease in the crystallinity of the composite films compared to the pure polymer, this being explained by a decrease in the arrangement of the polymer chains and a concurrent increase in the degree of their clutter. The presence of hydroxyapatite crystals did not have a significant influence on the degradation temperature of the composite film.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of Hydroxyapatite Particlesmentioning

confidence: 99%

Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films

Pandele

Constantinescu

Radu³

et al. 2020

Materials

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“…The diameter of both full structure filaments (not tubular) specified by the manufacturer is of 1.75 ± 0.05 mm.The filaments were placed on a bed of bovine-bone-derived HA powder (synthesized through an established and completely reproductible method, as previously reported [44]), with a particle size of >125 µm, on top of which a new powder layer was added (necessary to completely cover the filament). HA powder was obtained after three thermal processes, one of boiling, one of deproteinization and one of calcination in electric oven, followed by grinding in ball mill and granulometric sorting [20,45,46].The soaked filaments were pressed under the action of different pressing forces (see Figure 1 and Table 1). The next step involved the thermal treatment of these samples into an electrical oven for different periods of time (30', 60', and 120') and different temperatures (195, 205, and 215 • C).…”

mentioning

confidence: 99%

“…The filaments were placed on a bed of bovine-bone-derived HA powder (synthesized through 104 an established and completely reproductible method, as previously reported [44]), with a particle size 105 of >125 μm, on top of which a new powder layer was added (necessary to completely cover the 106 filament). HA powder was obtained after three thermal processes, one of boiling, one of 107 deproteinization and one of calcination in electric oven, followed by grinding in ball mill and 108 granulometric sorting [20,45,46].…”

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confidence: 99%

Novel Synthesis of Core-Shell Biomaterials from Polymeric Filaments with a Bioceramic Coating for Biomedical Applications

et al. 2020

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Bone tissue engineering is constantly in need of new material development with improved biocompatibility or mechanical features closer to those of natural bone. Other important factors are the sustainability, cost, and origin of the natural precursors involved in the technological process. This study focused on two widely used polymers in tissue engineering, namely polylactic acid (PLA) and thermoplastic polyurethane (TPU), as well as bovine-bone-derived hydroxyapatite (HA) for the manufacturing of core-shell structures. In order to embed the ceramic particles on the polymeric filaments surface, the materials were introduced in an electrical oven at various temperatures and exposure times and under various pressing forces. The obtained core-shell structures were characterized in terms of morphology and composition, and a pull-out test was used to demonstrate the particles adhesion on the polymeric filaments structure. Thermal properties (modulated temperature and exposure time) and the pressing force's influence upon HA particles' insertion degree were evaluated. More to the point, the form variation factor and the mass variation led to the optimal technological parameters for the synthesis of core-shell materials for prospect additive manufacturing and regenerative medicine applications.Coatings 2020, 10, 283 2 of 18 importance. Among these, PLA was widely used, mainly due to its biocompatibility with the human organism and the advantageous synthesis alternative from sustainable natural resources (e.g., beet or maize) [14]. Along with PLA, TPU was remarked in the additive manufacturing technology [15]. The TPU applications in the medical field spread from blood vessels, implants, and prosthetics, to scaffolding in tissue engineering, dialysis membranes, or breast implants [16].Furthermore, naturally derived hydroxyapatite (HA) is a bioactive ceramic, with similar chemical and structural properties to the mineral component of the natural bone tissue, and exceptional biocompatibility and osteoconductivity. HA can be synthesized from various renewable resources (e.g. fish, sheep, cattle or bovine bones [17,18] or marine shells [19,20]).Along with the development of new biomaterials, the cost-efficient and highly performant processing techniques for final products manufacturing are also in need of improvement. Additive manufacturing (AM) or 3D printing can be considered 21st century technology due to the possibility to attain patient-customized and adapted products [14]. However, the most widely and accessible used technique in orthopedics is fused deposition modeling (FDM) or fused filler fabrication (FFF) [8,14,21,22], which provide 3D scaffolds with a well-defined design by extruding a digital 3D model from thermoplastic polymeric materials heated to their melting point [22].This study aims to provide a new core-shell material that can be used in the FDM technique, targeted due to its rigorous control of parameters (temperature, bed temperature, feed rate, printing speed, etc.) [23][24][25][26][27].Therefore, thi...

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“…The various aspects related to the interface phenomenon appear to be very interesting not just for dentistry [8][9][10][11][12][36][37][38][39], but also for many clinical specializations like orthopedics [13][14][15][16][17][18], neurosurgery [19][20][21], cardiovascular surgery [22][23][24], abdominal surgery [25][26][27][28], gynecology [29][30][31], and other surgical specializations [32][33][34][35].…”

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confidence: 99%

Implementation of Holographic Research in Periodontal Disease

Manole¹,

Burde²,

Milea³

et al. 2018

Rev. Chim.

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Effect of micron sized silver particles concentration on the adhesion induced by sintering and antibacterial properties of hydroxyapatite microcomposites

Cited by 29 publications

References 36 publications

Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films

Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films

Novel Synthesis of Core-Shell Biomaterials from Polymeric Filaments with a Bioceramic Coating for Biomedical Applications

Implementation of Holographic Research in Periodontal Disease

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