Synthesis of nano-structured sphene and mechanical properties optimization of its scaffold via response surface methodology

Journal of Advanced Materials and Processing

مقاله 7، دوره 4، شماره 2، شهریور 2016، صفحه 56-62   

نوع مقاله: Research Paper

نویسندگان

Amirmostafa Amirjani¹؛ Masoud Hafezi^{* 2}؛ Ali Zamanian³؛ Mana Yasaee⁴؛ Noor Azuan Abu Osman⁵

¹Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

²Nanotechnology and Advanced Materials Division, Materials and Energy Research Center, Iran

³Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Alborz, Iran.

⁴Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.

⁵Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.

چکیده

Nano-structured sphene (CaTiSiO5) powder was synthesized via mechanical activation and heat treatment method. The synthesized powder was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and simultaneous thermal analysis (STA). The sphene scaffolds were then fabricated via porogen method (using citric acid). Response surface methodology was successfully used to determine the effects of d (particle size) and %V porogen (volume percent of porogen) on the mechanical behavior of the prepared sphene scaffolds. Moreover, a suitable mathematical model for describing the relationship between the factors (d and %V porogen) and the response (compressive strength) was statistically developed. The use of porogen in the synthesis procedure can change the porosity value of the final scaffold; thus, the compressive strength of the sphene scaffolds varied widely. Statistical analysis results predicted that the maximum value of the compressive strength can be obtained at the following conditions: %V = 25% and d = 250 µm. At these conditions, the prepared scaffolds possess a compressive strength value as high as 7 MPa.

کلیدواژه‌ها

Bioceramics؛ Mechano-chemical synthesis؛ mechanical properties؛ Response Surface Methodology

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