Mechanical and bioactive properties of mullite reinforced pseudowollastonite biocomposite

Farah Atiqah Abdul Azam, Roslinda Shamsudin, Min Hwei Ng, Zalita Zainuddin, Muhammad Azmi Abdul Hamid, Rashita Abdul Rashid

Research output: Contribution to journalArticle

Abstract

Bioactive composites consist of pseudowollastonite and mullite synthesized from natural resources was developed for bone implant applications. To realize such applications, a mechanical test of these composites and in vitro bioactivity in SBF solution were studied. The present paper reports pseudowollastonite synthesized from the rice husk ash and limestone reinforced with 10, 20 and 30 wt. % of mullite. Influence of sintering temperature, phase composition, morphology towards mechanical properties of various pseudowollastonite-mullite (PSW-M) composites was examined prior to the bioactivity test. It was found that pseudowollastonite with the addition of 20 wt. % of mullite sintered at 1150°C gave the best result for diametral tensile strength (DTS) and hardness with the value of 8.8 ± 0.15 MPa and 3.79 ± 0.13 GPa, respectively. The obvious increment in the mechanical strength was due to the formation of liquid phase CaAl2O3 during sintering at 1150°C. In addition, the formation of fibrous apatite (HA) layer of amorphous calcium phosphate (ACP) with Ca/P ratio 1.8 on PSW20M sample confirmed the good bioactivity of the composite.

Original languageEnglish
Pages (from-to)2141-2149
Number of pages9
JournalSains Malaysiana
Volume47
Issue number9
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Bioactivity
Composite materials
Ashes
Sintering
Apatites
Calcium Carbonate
Natural resources
Phase composition
Strength of materials
Bone
Tensile strength
Hardness
Mechanical properties
aluminosilicate
calcium silicate
Liquids
Temperature

Keywords

  • Bioactivity
  • Mechanical
  • Mullite
  • Pseudowollastonite

ASJC Scopus subject areas

  • General

Cite this

Mechanical and bioactive properties of mullite reinforced pseudowollastonite biocomposite. / Azam, Farah Atiqah Abdul; Shamsudin, Roslinda; Ng, Min Hwei; Zainuddin, Zalita; Abdul Hamid, Muhammad Azmi; Rashid, Rashita Abdul.

In: Sains Malaysiana, Vol. 47, No. 9, 01.01.2018, p. 2141-2149.

Research output: Contribution to journalArticle

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