The Effects of Silicon Oxide on the Structure, Physical Chemistry Properties, and Bioactivity of Phosphate Glasses Containing Sodium, Strontium, and Titanium Oxides

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY

Physical Chemistry Research Pub Date : 2022-01-01 DOI:10.22036/PCR.2021.271462.1881

El Abdouni Ibtissam, Krimi Saida, Oudadesse Hassane

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引用次数: 4

Abstract

Glasses with molar compositions 40Na2O - 10SrO - (20-x)TiO2 - xSiO2 - 30P2O5 (0 ≤ x ≤ 10), corresponding to the chemical formula Na4Sr0.5Ti(1-y)Siy(PO4)3 ( 0 ≤ y ≤ 0.5) with O/P = 4, have been prepared by the classical melt - quenching technique and structurally characterized by XRD, DSC, FTIR, Raman, NMR and density measurements. The introduction of SiO2 in the phosphate glass weakens slightly the glass network, as shown by the low increase of the molar volume (VM) and the decrease of the glass transition temperature (Tg). This behaviour is due to the existence of more ionic P-O-Si bonds than the P-O-P bonds. Spectroscopy studies reveal that SiO2 behaves as network former like P2O5 oxide and the glass structure contains P-O, P-O-P, Si-O, Si-O-Si, Ti-O, Ti-O-Ti, P-O-Ti and P-O-Si linkages. The preliminary results of the in vitro bioactivity tests show the existence of ionic exchanges between the SBF solution and the studied glasses. X-ray powder diffraction and FTIR spectroscopy confirmed the formation of Ca-P layer on the surfaces of the tested compositions.

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氧化硅对含钠、锶和钛氧化物的磷酸盐玻璃的结构、物理化学性质和生物活性的影响

采用经典熔融淬火技术制备了摩尔成分为40Na2O - 10SrO - (20-x)TiO2 - xSiO2 - 30P2O5(0≤x≤10)的玻璃，对应化学式为Na4Sr0.5Ti(1-y)Siy(PO4)3(0≤y≤0.5)，O/P = 4，并通过XRD、DSC、FTIR、拉曼、NMR和密度测量对其进行了结构表征。在磷酸盐玻璃中引入SiO2对玻璃网络有轻微的削弱作用，表现为摩尔体积(VM)的小幅增加和玻璃化转变温度(Tg)的降低。这种行为是由于存在比P-O-P键更多的离子P-O-Si键。光谱学研究表明，SiO2具有与P2O5氧化物类似的成网状结构，玻璃结构中含有P-O、P-O- p、Si-O、Si-O- si、Ti-O、Ti-O- ti、P-O- ti和P-O- si键。体外生物活性试验的初步结果表明，SBF溶液与所研究的玻璃之间存在离子交换。x射线粉末衍射和FTIR光谱证实在被测成分表面形成了Ca-P层。

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来源期刊

Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.70

自引率

8.30%

发文量

期刊介绍： The motivation for this new journal is the tremendous increasing of useful articles in the field of Physical Chemistry and the related subjects in recent years, and the need of communication between Physical Chemists, Physicists and Biophysicists. We attempt to establish this fruitful communication and quick publication. High quality original papers in English dealing with experimental, theoretical and applied research related to physics and chemistry are welcomed. This journal accepts your report for publication as a regular article, review, and Letter. Review articles discussing specific areas of physical chemistry of current chemical or physical importance are also published. Subjects of Interest: Thermodynamics, Statistical Mechanics, Statistical Thermodynamics, Molecular Spectroscopy, Quantum Chemistry, Computational Chemistry, Physical Chemistry of Life Sciences, Surface Chemistry, Catalysis, Physical Chemistry of Electrochemistry, Kinetics, Nanochemistry and Nanophysics, Liquid Crystals, Ionic Liquid, Photochemistry, Experimental article of Physical chemistry. Mathematical Chemistry.