Characterization Porous HA/SiO2 Composite Prepared Using Natural Space Holder

Arifin, Amir and Gunawan, Gunawan (2021) Characterization Porous HA/SiO2 Composite Prepared Using Natural Space Holder. Lecture Notes in Mechanical Engineering. ISSN 2195-4356

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Abstract

Hydroxyapatite based on bovine bone has been developed in addition to medical needs, adsorbents, catalysts, and other engineering applications. The use of hydroxyapatite-based catalysts in the industry is still very high, one of which is solid catalysts. This study aims to develop a solid porous catalyst from a HA/SiO2 composite. The porous composite was prepared with SiO2 as much as 25% of the total weight fraction and utilized sweet potato powder heated at a temperature of 150 °C as a space holder. The manufacturing process begins by mixing hydroxyapatite powder (200 µm), SiO2 powder (200 µm), and purple sweet potato powder (200 µm), then mixing it using a ball mill with a rotating speed of 225 rpm for 1 h. The mixture was then put into the molding and compacted with a pressure of 69.805 MPa. The green body was then sintered at 1100 and 1200 °C and held for 3 h. Apparent density measurements were carried out using the Archimedes method, and the highest density was 1.4983 g/cm3 with a porosity of 50.34% in the 30% space holder specimen. The XRD test shows that the dominant phases are hydroxyapatite (HA), β-TCP, and SiO2. The compressive strength test showed the highest average compressive strength of 33,073 MPa in the 30% space holder specimen. The SEM observations showed pores formed in the samples with varying sizes ranging from 4.510 to 67.32 µm and showed interconnecting porous.

Item Type:	Article
Subjects:	T Technology > TP Chemical technology > TP248.13-248.65 Biotechnology
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Amir Arifin
Date Deposited:	18 Apr 2023 12:56
Last Modified:	18 Apr 2023 12:56
URI:	http://repository.unsri.ac.id/id/eprint/97026

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