Investigation of thermal parameters and crytallisation in a ternary CaO–Na2O–P2O5-based glass system

Franks, K; Abrahams, Isaac; Georgiou, George; Knowles, Jonathan C.

doi:10.1016/s0142-9612(00)00207-6

Cited by 108 publications

(76 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obvious starting point for phosphate-based glasses is to use 31 P NMR. 31 P has a large magnetic moment and hence one of the highest receptivities of any nucleus [58]. These nuclear properties coupled with its 100 per cent natural abundance makes 31 P a very sensitive nucleus.…”

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

“…31 P has a large magnetic moment and hence one of the highest receptivities of any nucleus [58]. These nuclear properties coupled with its 100 per cent natural abundance makes 31 P a very sensitive nucleus. It is a spin-1/2 nucleus and so is most strongly affected by the chemical shielding interaction, which is a result of the electronic density around the nucleus modifying the magnetic field experienced by the nucleus.…”

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

“…NMR offers resolution of the local environments in both crystals and glasses despite the broader lines glasses as a result of the greater isotropic linewidths owing to the increased chemical shift dispersion, which results from the disorder in the structure. 31 P MAS NMR experiments offer direct information about the Q n speciation and have been used in binary, ternary and more complex systems [59,60]. An example is shown in figure 1 where, at the compositions shown, Q 1 and Q 2 species are dominant.…”

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

See 2 more Smart Citations

Titanium-containing bioactive phosphate glasses

Kiani

Lakhkar

Salih

et al. 2012

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

The use of biomaterials has revolutionized the biomedical field and has received substantial attention in the last two decades. Among the various types of biomaterials, phosphate glasses have generated great interest on account of their remarkable bioactivity and favourable physical properties for various biomedical applications relating to both hard and soft tissue regeneration. This review paper focuses mainly on the development of titanium-containing phosphate-based glasses and presents an overview of the structural and physical properties. The effect of titanium incorporation on the glassy network is to introduce favourable properties. The biocompatibility of these glasses is described along with recent developments in processing methodologies, and the potential of Ti-containing phosphate-based glasses as a bone substitute material is explored.

show abstract

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

Section: Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

See 1 more Smart Citation

Titanium-containing bioactive phosphate glasses

Kiani

Lakhkar

Salih

et al. 2012

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…Phosphate glass exhibit very important physical properties such as low melting temperature, high thermal expansion coefficient, low glass transition temperature, low softening temperature and high UV transmission 2,3 . Despite their solubility, the low processing temperature has led these glasses to be used in applications such as glass to metal seals, low temperature enamels for metals and for optical elements 4 .…”

Section: Introductionmentioning

confidence: 99%

Infrared Measurements of Sodium-Lead-Barium-Aluminium-Phosphate Glass

Kothari¹,

Durgapal²

2012

Orientjchem.

View full text Add to dashboard Cite

Infrared spectra were measured for the structural study of the Sodium-lead-bariumaluminum phosphate glass since infrared spectroscopy may probe the nature of the bond between the metal cation and its surrounding oxygens, and can distinguish those metal cations which exhibit a predominantly covalent interaction with oxygen from those metal cation which exhibit mainly ionic interactions with the polyphosphate anionic chains.

show abstract

“…PGs having a ternary system (P 2 O 5 OCaOONa 2 O) have been previously investigated in considerable depth with relation to chemistry, degradation, biocompatibility, and cytotoxicity. [17][18][19][20][21][22][23][24] Furthermore, the addition of PG into polymers such as PLA may further enhance the complex nature of the degradation of the matrix. 25,26 The degradation of PLA has been shown to be affected by a number of factors, such as chemical structure, crystallinity, molecular weight, processing conditions, shape, and size.…”

Section: Introductionmentioning

confidence: 99%

Bone Tissue Engineering

2004

View full text Add to dashboard Cite

Phosphate glass (PG) of the composition 0.46(CaO)-0.04(Na 2 O)-0.5(P 2 O 5 ) was used as filler in poly-L-lactic acid (PLA) foams developed as degradable scaffolds for bone tissue engineering. The effect of PG on PLA was assessed both in bulk and porous composite foams. Composites with various PG content (0, 5, 10, and 20 wt %) were melt-extruded, and either compression-molded or foamed through supercritical CO 2 . Dynamic mechanical analysis on the bulk composites showed that incorporating 20 wt % PG resulted in a significant increase in storage modulus. Aging studies in deionized water in terms of weight loss, pH change, and ion release inferred that the degradation was due to PG dissolution, and dependent on the amount of glass in the composites. Foaming was only possible for composites containing 5 and 10 wt % PG, as an increase in PG increased the foam densities; however, the level of porosity was maintained above 75%. PLA-T g in the foams was higher than those obtained for the bulk. Compressive moduli showed no significant reinforcement with glass incorporation in either expansion direction, indicating no anisotropy. Biocompatibility showed that proliferation of human fetal bone cells was more rapid for PLA compared to PLA-PG foams. However, the proliferation rate of PLA-PG foams were similar to those obtained for foams of PLA with either hydroxyapatite or ␤-tricalcium phosphate.

show abstract

Investigation of thermal parameters and crytallisation in a ternary CaO–Na2O–P2O5-based glass system

Cited by 108 publications

References 10 publications

Titanium-containing bioactive phosphate glasses

Titanium-containing bioactive phosphate glasses

Infrared Measurements of Sodium-Lead-Barium-Aluminium-Phosphate Glass

Bone Tissue Engineering

Contact Info

Product

Resources

About