Influence of the sintering temperature on the structural feature and bioactivity of sol–gel derived SiO2–CaO–P2O5 bioglass

Ma, Jun; Chen, C.Z.; Wang, Diangang; Meng, Xianlin; Shi, Jiazi

doi:10.1016/j.ceramint.2010.03.017

Cited by 121 publications

(64 citation statements)

References 31 publications

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“…MBG-TEP shows weak peaks for calcium silicate and wollastonite phases as confirmed using JCPDS card #31-0302 and 43-1460. The broad peak from 20°to 30°is characteristic of partial amorphous nature [25], [26][27][28].…”

Section: Thermal Behaviour Of Mesoporous Bioactive Glassesmentioning

confidence: 99%

A study of the effect of precursors on physical and biological properties of mesoporous bioactive glass

et al. 2014

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A novel mesoporous bioactive glass (MBG) of composition 64SiO 2 -26CaO-10P 2 O 5 (mol %) was prepared by hydrothermal method using H 3 PO 4 as a precursor for P 2 O 5 . The effect of use of organic triethylphosphate (TEP) and inorganic H 3 PO 4 in MBG synthesis on glass transition temperature (T g ), crystallinity, morphology and bioactivity of MBGs was studied. Phase purity determination and structural analysis were done using powder X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, respectively. XRD revealed that MBG prepared from H 3 PO 4 (MBG-H 3 PO 4 ) when sintered at 700°C was partially glassy/amorphous in nature and contained a mixture of crystalline apatite, wollastonite, calcium phosphate and calcium silicate phases. Calcined MBG prepared from TEP (MBG-TEP) contained only wollastonite and calcium silicate phases. Particle size and surface area determined by BET surface area analysis showed higher surface area (310 m 2 g -1 ) for MBG-H 3 PO 4 as compared to MBG-TEP (86 m 2 g -1 ). It also had a smaller particle size (20 nm) and 70 % higher pore volume (0.88 cm 3 g -1 ) for MBG-H 3 PO 4 as compared to MBG-TEP (60 nm particle size and 0.23 cm 3 g -1 pore volume). Thermal studies showed that use of H 3 PO 4 decreases T g and increased DT (difference between T g and crystallization initiation temperature Tc o ). Low T g and high DT also enhanced bioactivity of MBGs. Bioactivity was determined by immersion in a simulated body fluid for varying time intervals for a maximum period of 14 days. It revealed enhanced bioactivity, as evident by the formation of apatite layer on the surface, for MBG-H 3 PO 4 as compared to MBG-TEP. Scanning electron microscopy and FTIR spectroscopy also supported this observation. Antibacterial studies with Escherichia Coli bacteria, MBG-H 3 PO 4 showed better antibacterial behaviour than MBG-TEP.

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Section: Thermal Behaviour Of Mesoporous Bioactive Glassesmentioning

confidence: 99%

A study of the effect of precursors on physical and biological properties of mesoporous bioactive glass

et al. 2014

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“…Kaca tersinter SiCa4P didapati membentuk kumpulan berfungsi berkaitan silikat seperti ditunjukkan pada Rajah 3(a). Ini merujuk kepada kehadiran puncak spektrum iaitu 1090 cm -1 (regangan Si-O-Si) (Ma et al 2010), 1060-1080 cm -1 (lenturan asimetri Si-O-Si) (Catauro et al 2015), 990 cm -1 (lenturan asimetri Si-O-Si), 940 cm -1 (regangan simetri Si-O) (Radev et al 2010), 800-810 cm -1 (lenturan asimetri Si-O-Si) (Catauro et al 2015), 717 cm -1 (lenturan Si-O) (Radev et al 2010) dan 470 cm -1 (goyangan Si-O-Si) (Ma et al 2010). Peningkatan kandungan fosfat didapati meningkatkan RAJAH 1.…”

Section: Analisis Kumpulan Berfungsiunclassified

“…Walau bagaimanapun, bahan kaca bioaktif ini mempunyai sifat mekanikal yang tidak bersesuaian dengan tulang hidup yang bersifat rapuh dan tidak mempunyai kekuatan mekanikal yang mencukupi menyebabkan bahan ini tidak sesuai digunakan terutamanya di bawah bebanan tinggi (Ma et al 2010). Disebabkan itu, kajian yang dijalankan sebelum ini terhadap bahan kaca bioaktif dilihat terhad pada bentuk serbuk termasuklah yang bersaiz nano (Oliveira et al 2013).…”

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Kesan Kandungan Fosfat Berbeza terhadap Pembentukan Morfologi Permukaan, Penghabluran, Fasa, Ikatan Kimia dan Kekuatan Mampatan Bio-kaca Sol-Gel Tersinter

Adam

Shamsudin²,

Zainuddin

et al. 2018

JSM

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ABSTRAKKajian ini bertujuan untuk mengkaji kesan kandungan fosfat berbeza (X = 10, 15 dan 20% mol) PENGENALANKebolehupayaan serbuk kaca bioaktif (bio-kaca) yang boleh disinter merupakan faktor yang sangat penting dalam membangunkan teknologi penghasilan bahan implan yakni daripada perancah berkeliangan tinggi kepada bahan salutan bioaktif. Walau bagaimanapun, bahan kaca bioaktif ini mempunyai sifat mekanikal yang tidak bersesuaian dengan tulang hidup yang bersifat rapuh dan tidak mempunyai kekuatan mekanikal yang mencukupi menyebabkan bahan ini tidak sesuai digunakan terutamanya di bawah bebanan tinggi (Ma et al. 2010). Disebabkan itu, kajian yang dijalankan sebelum ini terhadap bahan kaca bioaktif dilihat terhad pada bentuk serbuk termasuklah yang bersaiz nano (Oliveira et al. 2013). Walau bagaimanapun, beberapa ciri dan sifat penting yang dimiliki oleh bahan kaca bioaktif ini menyebabkan bahan ini amat diperlukan dalam aplikasi

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“…Raman spectroscopy is a powerful tool for non bridging oxygen identification and for finding the concentration of non bridging oxygens in glass matrix (Gonz_alez et al 2003). Based on the sintering temperature, bio-activity of sol-gel SiO 2 -CaO-P 2 O 5 bio glass can influence the wollastonite or psudo-wollastanite structure formation after SBF treatment (Ma et al 2010). Li 2 O addition to the calcium phosphosilicate glass resists the HCA growth rate in dissolution process; the problem of HCA layer growth rate resistance in SBF-soaked calcium phosphosilicate glasses can be overcome by Na 2 O addition (Kavitha et al 2014;Lusvardi et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of alkali earth oxides on hydroxy-carbonated apatite nano layer formation for SiO2–BaO–CaO–Na2O–P2O5 glass system

et al. 2017

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Barium soda lime phosphosilicate [(58SiO 2 -(32 -x)BaO-xCao-6Na 2 O-4P 2 O 5 (where x = 15, 20, 25 and 30 mol%)] samples were synthesised using conventional sol-gel method at 700°C sintering temperature. Thermal, structural properties were studied using thermo gravimetric analysis and differential thermal analysis, X-ray diffraction, scanning electron microscopy, fourier transform infrared and Raman spectroscopy. Using Raman spectra non-bridging oxygen concentrations were estimated. The hydroxy-carbonated apatite (HCA) layer formation on samples was analysed for 7 days using simulated body fluid (SBF) soaked samples. The growth of HCA layers self-assembled on the sample surface was discussed as a function of NBO/BO ratio. Results indicated that the number of Ca 2? ions released into SBF solution in dissolution process and weight loss of SB-treated samples vary with NBO/BO ratio. The changes in NBO/BO ratios were observed to be proportional to HCA forming ability of barium soda lime phosphosilicate glasses.

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Influence of the sintering temperature on the structural feature and bioactivity of sol–gel derived SiO2–CaO–P2O5 bioglass

Cited by 121 publications

References 31 publications

A study of the effect of precursors on physical and biological properties of mesoporous bioactive glass

A study of the effect of precursors on physical and biological properties of mesoporous bioactive glass

Kesan Kandungan Fosfat Berbeza terhadap Pembentukan Morfologi Permukaan, Penghabluran, Fasa, Ikatan Kimia dan Kekuatan Mampatan Bio-kaca Sol-Gel Tersinter

Effect of alkali earth oxides on hydroxy-carbonated apatite nano layer formation for SiO2–BaO–CaO–Na2O–P2O5 glass system

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