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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Zhang, D.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Purely two-dimensional vortex matter in infinite-layer nickelates
- 2023Characterization of black slags obtained during smelting in the electric arc furnace from SIDERPERU following reduction
- 2022Wettability of carbon nanotube-grafted carbon fibers and their interfacial properties in polypropylene thermoplastic compositecitations
- 2022Carbothermal reduction of mill scales formed on steel billets during continuous casting
- 2022No ball milling neededcitations
- 2022Characterization of black slags obtained during smelting in the electric arc furnace from SIDERPERU following reduction
- 2021Carbothermal reduction of mill scales formed on steel billets during continuous casting
- 2021Microstructures and mechanical properties of high strength Ti-XAl-2Fe-3Cu alloys fabricated by powder compact extrusioncitations
- 2020Bio-inspired multi-resonant acoustic devices based on electrospun piezoelectric polymeric nanofibres
- 2019Biocompatible Carbon Nanotube-Based Hybrid Microfiber for Implantable Electrochemical Actuator and Flexible Electronic Applications.citations
- 20184-terminal and 2-terminal tandem modules in bifacial operation: model analysis and comparison:
- 2018Highly efficient and stable flexible perovskite solar cells with metal oxides nanoparticle charge extraction layers
- 2018Phase evolution and electrical behaviour of samarium-substituted bismuth ferrite ceramics
- 2015Amorphous silicon solar cells on nano-imprinted commodity paper without sacrificing efficiency
- 2015Amorphous silicon solar cells on nano-imprinted commodity paper without sacrificing efficiencycitations
- 2014Microstructural evolution of cryomilled Ti/Al mixture during high-pressure torsioncitations
- 2014Morphology related photodegradation of low-band-gap polymer blendscitations
- 2014Magnetic domain structure in nanocrystalline Ni-Zn-Co spinel ferrite thin films using off-axis electron holographycitations
- 2012In-vitro Degradation and Bioactivity of Tailored Amorphous Multi Porous Scaffold Structurecitations
- 2012Modification of Sintered Titanium alloys by Hot Isostatic Pressingcitations
- 2011Recent progress in understanding physical and chemical properties of African and Asian mineral dustcitations
- 2011Growth of doped silicon nanowires by pulsed laser deposition and their analysis by electron beam induced current imagingcitations
- 2010High-Resolution spectroScopic mapping of the chemical contrast from nanometer domains in P3HT:PCBM organic blend films for Solar-Cell applications bycitations
- 2009Parabolic mirror-assisted tip-enhanced spectroscopic imaging for non-transparent materialscitations
- 2009Factors affecting in vitro bioactivity of glassescitations
- 2008Influence of fluid circulation on in vitro reactivity of bioactive glass particlescitations
- 2008In situ pH within particle beds of bioactive glassescitations
- 2007Control of the forming properties of bioactive glasses
- 2007Fabrication and characterisation of barium strontium titante thick film device structures for microwave applicationscitations
- 2004Piezoelectric 1-3 composites for high frequency ultrasonic transducer applicationscitations
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article
In situ pH within particle beds of bioactive glasses
Abstract
The in vitro behavior of three bioactive glasses with seven particle size distributions was studied by measuring the in situ pH inside the particle beds for 48 h in simulated body fluid (SBF). After immersion, the surface of the particles was characterized with a field emission scanning electron microscope equipped with an energy-dispersive X-ray analyzer. In addition, the results were compared with the reactions of the same glasses formed as plates. A similar trend in pH as a function of immersion time was observed for all systems. However, the pH inside the particle beds was markedly higher than that in the bulk SBF of the plates. The pH decreased as power functions with increasing particle size, i.e. with decreasing surface area. The in vitro reactivity expressed as layer formation strongly depended on the particle size and glass composition. The average thickness of the total reaction layer decreased with the increase in sample surface area. Well-developed silica and calcium phosphate layers typically observed on glass plates could be detected only on some particles freely exposed to the solution. No distinct reaction layers were observed on the finest particles, possibly because the layers spread out on the large surface area. Differences in the properties of the bulk SBF and the solution inside the particle bed were negligible for particles larger than 800 mu m. The results enhance our understanding of the in vitro reactions of bioactive glasses in various product forms and sizes.