scholarly journals Surface Reactions of Mesoporous Bioactive Glasses Monitored by Solid-State NMR: Concentration Effects in Simulated Body Fluid

2016 ◽  
Vol 120 (9) ◽  
pp. 4961-4974 ◽  
Author(s):  
Claudia Turdean-Ionescu ◽  
Baltzar Stevensson ◽  
Isabel Izquierdo-Barba ◽  
Ana García ◽  
Daniel Arcos ◽  
...  
Keyword(s):  
Solid State ◽  
Simulated Body Fluid ◽  
Solid State Nmr ◽  
Body Fluid ◽  
Surface Reactions ◽  
Concentration Effects ◽  
Bioactive Glasses

A multinuclear solid state NMR spectroscopic study of the structural evolution of disordered calcium silicate sol–gel biomaterials

2015 ◽  
Vol 17 (4) ◽  
pp. 2540-2549 ◽  
Author(s):  
Zhongjie Lin ◽  
Julian R. Jones ◽  
John V. Hanna ◽  
Mark E. Smith
Keyword(s):  
Solid State ◽  
Simulated Body Fluid ◽  
Spectroscopic Study ◽  
Calcium Silicate ◽  
Solid State Nmr ◽  
Body Fluid ◽  
Sol Gel ◽  
Structural Evolution ◽  
Subsequent Reaction ◽  
Bioactive Glasses

Multinuclear solid state NMR, especially 17O, shows the structural evolution of calcium silicate sol–gel bioactive glasses during stabilisation and subsequent reaction with simulated body fluid.

Development of Novel Mesoporous Silica-Based Bioactive Glass Scaffolds with Drug Delivery Capabilities

2014 ◽  
Vol 96 ◽  
pp. 54-60 ◽  
Author(s):  
Anahí Philippart ◽  
Elena Boccardi ◽  
Lucia Pontiroli ◽  
Ana Maria Beltrán ◽  
Alexandra Inayat ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Simulated Body Fluid ◽  
Mesoporous Silica ◽  
Body Fluid ◽  
Glass Composition ◽  
Glass Structure ◽  
Sol Gel ◽  
Bioactive Glasses

Novel silica-based bioactive glasses were successfully prepared by the sol-gel method. The optimized glass composition for fabrication of the scaffolds was (in mol.%) 60% SiO2 – 30% CaO - 5% Na2O - 5% P2O5 (60S30C5N5P). This composition was confirmed to develop a thick hydroxycarbonate apatite (HCA) layer in Simulated Body Fluid (SBF) after 7 days, as revealed by Fourier Transform Infrared Spectroscopy (FTIR), indicating the bioactive character of the scaffolds. The mesoporous nature of the glass structure allows the load of tetracycline and a sustained release of the drug in PBS during 7 days was measured.

scholarly journals Bonding between Bioactive Glasses, Glass-Ceramics or Ceramics in a Simulated Body Fluid

1987 ◽  
Vol 95 (1104) ◽  
pp. 785-791 ◽  
Author(s):  
Takashi KOKUBO ◽  
Tetsuya HAYASHI ◽  
Sumio SAKKA ◽  
Toshiaki KITSUGI ◽  
Takashi YAMAMURO
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Glass Ceramics ◽  
Bioactive Glasses

scholarly journals Hierarchical Structures and Shaped Particles of Bioactive Glass and ItsIn VitroBioactivity

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
U. Boonyang ◽  
F. Li ◽  
A. Stein
Keyword(s):  
Body Temperature ◽  
Simulated Body Fluid ◽  
Bioactive Glass ◽  
Body Fluid ◽  
Colloidal Crystals ◽  
Hierarchical Structures ◽  
The Other ◽  
Bioactive Glasses ◽  
Ordered Macroporous

In this study, bioactive glass particles with controllable structure and porosity were prepared using dual-templating methods. Block copolymers used as one template component produced mesopores in the calcined samples. Polymer colloidal crystals as the other template component yielded either three-dimensionally ordered macroporous (3DOM) products or shaped bioactive glass nanoparticles. Thein vitrobioactivity of these bioactive glasses was studied by soaking the samples in simulated body fluid (SBF) at body temperature (37°C) for varying lengths of time and monitoring the formation of bone-like apatite on the surface of the bioactive glass. A considerable bioactivity was found that all of bioactive glass samples have the ability to induce the formation of an apatite layer on its surface when in contact with SBF. The development of bone-like apatite is faster for 3DOM bioactive glasses than for nanoparticles.

scholarly journals The Atomic-Scale Interaction of Bioactive Glasses with Simulated Body Fluid

2005 ◽  
Vol 480-481 ◽  
pp. 21-26 ◽  
Author(s):  
L.J. Skipper ◽  
F.E. Sowrey ◽  
D.M. Pickup ◽  
R.J. Newport ◽  
K.O. Drake ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Sol Gel ◽  
Atomic Scale ◽  
X Ray Diffraction ◽  
Bioactive Glasses ◽  
Edge Structure ◽  
X Ray ◽  
X Ray Absorption

The formation of a carbonate-containing hydroxyapatite, HCAp, layer on bioactive calcium silicate sol-gel glass of the formula (CaO)0.3(SiO2)0.7 has been studied in-vitro in Simulated Body Fluid (SBF). Extended X-ray Absorption Fine Structure (EXAFS), X-ray Absorption Near Edge Structure (XANES), X-ray diffraction (XRD), and solid state nuclear magnetic resonance (NMR) measurements have been performed with results showing the formation of a significantly amorphous HCAp layer after less than 5 hours in solution.

Growth of Hydroxyapatite on Strontium Oxide Modified Bioactive Glass

2015 ◽  
Vol 1107 ◽  
pp. 397-402
Author(s):  
H.J.M. Ridzwan ◽  
N.H. Jamil ◽  
S.A. Syamsyir ◽  
W.A.W. Razali
Keyword(s):  
Simulated Body Fluid ◽  
Bioactive Glass ◽  
Body Fluid ◽  
Sol Gel ◽  
Amorphous State ◽  
Strontium Oxide ◽  
Bioactive Glasses ◽  
Xrd Pattern ◽  
Gel Method ◽  
Sol Gel Method

The bioactive glasses of SiO2-CaO-P2O5-SrO system have been prepared by a quick alkali mediated sol-gel method. The prepared bioactive glass of 1, 3, 5 wt% of SrO (coded: SR1, SR3, SR5, respectively) were characterized by SEM, XRD and FTIR. XRD pattern of all glasses calcined at 700°C in air confirmed that the calcined bioactive glass generally existed in amorphous state. The samples were immersed in simulated body fluid (SBF) to investigate the presence of hydroxyapatite (HA). All bioactive glass samples can induce the formation of hydroxyapatite (HA) as verified by SEM and XRD.

Multinuclear Solid-State NMR Studies of Ordered Mesoporous Bioactive Glasses

2008 ◽  
Vol 112 (14) ◽  
pp. 5552-5562 ◽  
Author(s):  
Ekaterina Leonova ◽  
Isabel Izquierdo-Barba ◽  
Daniel Arcos ◽  
Adolfo López-Noriega ◽  
Niklas Hedin ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Studies ◽  
Bioactive Glasses ◽  
Ordered Mesoporous
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