Mekanisme pembentukan apatit pada permukaan sampel β-wolastonit yang dihasilkan daripada abu sekam padi

Translated title of the contribution: Mechanism of apatite formation on β-wollastonite sample surface synthesized from rice husk ash

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The mechanism of apatite formation on the β-wollastonite surface was studied. β-wollastonite was produced using the sol-gel technique from rice husk ash and calcined limestone as the starting material with CaO:SiO2 ratio of 55:45. Bioactivity of the β-wollastonite sample was studied by immersing a cylindrical form sample in a simulation body fluid solution (SBF) for a period of 1, 3, 7 and 14 days. Surface composition, morphology and structural of the sample before and after immersion were analyzed using X-ray diffraction (XRD) and scanning electron microscope (FESEM) coupled with EDX. The XRD results showed that β-wollastonite was successful obtained after autoclaving for 8 h at 135°C, with pressure at 0.24 MPa and sintered for 2 h at 950°C. Apatite was found to growth on the surface of β-wollastonite after 7 days of immersion in the SBF solution. During immersion in the SBF solution, two types of calcium phosphate groups were obtained, which is amorphous calcium phosphate (ACP) after 3 days of immersion with Ca/P ratio in the range of 1.2-2.02 and on the 14th day, calcium deficient hydroxyapatite (CDHA) is formed with the molar ratio Ca/P 1.63. Phase transformation from crystalline to an amorphous was clearly been detected from the XRD results through the decreasing of the peak intensity at 2 theta of 30.0° after immersing in the SBF. This supports the occurring of apatite formation mechanism on the β-wollastonite surface and possesses bioactive property.

Original languageMalay
Pages (from-to)1779-1785
Number of pages7
JournalSains Malaysiana
Volume45
Issue number12
Publication statusPublished - 1 Dec 2016

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Ashes
Apatites
Body fluids
X ray diffraction
Calcium Carbonate
Durapatite
Bioactivity
Surface structure
Sol-gels
calcium silicate
Energy dispersive spectroscopy
Electron microscopes
Phase transitions
Crystalline materials
Calcium
Scanning

ASJC Scopus subject areas

  • General

Cite this

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title = "Mekanisme pembentukan apatit pada permukaan sampel β-wolastonit yang dihasilkan daripada abu sekam padi",
abstract = "The mechanism of apatite formation on the β-wollastonite surface was studied. β-wollastonite was produced using the sol-gel technique from rice husk ash and calcined limestone as the starting material with CaO:SiO2 ratio of 55:45. Bioactivity of the β-wollastonite sample was studied by immersing a cylindrical form sample in a simulation body fluid solution (SBF) for a period of 1, 3, 7 and 14 days. Surface composition, morphology and structural of the sample before and after immersion were analyzed using X-ray diffraction (XRD) and scanning electron microscope (FESEM) coupled with EDX. The XRD results showed that β-wollastonite was successful obtained after autoclaving for 8 h at 135°C, with pressure at 0.24 MPa and sintered for 2 h at 950°C. Apatite was found to growth on the surface of β-wollastonite after 7 days of immersion in the SBF solution. During immersion in the SBF solution, two types of calcium phosphate groups were obtained, which is amorphous calcium phosphate (ACP) after 3 days of immersion with Ca/P ratio in the range of 1.2-2.02 and on the 14th day, calcium deficient hydroxyapatite (CDHA) is formed with the molar ratio Ca/P 1.63. Phase transformation from crystalline to an amorphous was clearly been detected from the XRD results through the decreasing of the peak intensity at 2 theta of 30.0° after immersing in the SBF. This supports the occurring of apatite formation mechanism on the β-wollastonite surface and possesses bioactive property.",
keywords = "Apatite, Bioactivity, Calcined limestone, Rice husk ash, β-wollastonite",
author = "Hamisah Ismail and Roslinda Shamsudin and {Abdul Hamid}, {Muhammad Azmi} and Rozidawati Awang",
year = "2016",
month = "12",
day = "1",
language = "Malay",
volume = "45",
pages = "1779--1785",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
number = "12",

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TY - JOUR

T1 - Mekanisme pembentukan apatit pada permukaan sampel β-wolastonit yang dihasilkan daripada abu sekam padi

AU - Ismail, Hamisah

AU - Shamsudin, Roslinda

AU - Abdul Hamid, Muhammad Azmi

AU - Awang, Rozidawati

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The mechanism of apatite formation on the β-wollastonite surface was studied. β-wollastonite was produced using the sol-gel technique from rice husk ash and calcined limestone as the starting material with CaO:SiO2 ratio of 55:45. Bioactivity of the β-wollastonite sample was studied by immersing a cylindrical form sample in a simulation body fluid solution (SBF) for a period of 1, 3, 7 and 14 days. Surface composition, morphology and structural of the sample before and after immersion were analyzed using X-ray diffraction (XRD) and scanning electron microscope (FESEM) coupled with EDX. The XRD results showed that β-wollastonite was successful obtained after autoclaving for 8 h at 135°C, with pressure at 0.24 MPa and sintered for 2 h at 950°C. Apatite was found to growth on the surface of β-wollastonite after 7 days of immersion in the SBF solution. During immersion in the SBF solution, two types of calcium phosphate groups were obtained, which is amorphous calcium phosphate (ACP) after 3 days of immersion with Ca/P ratio in the range of 1.2-2.02 and on the 14th day, calcium deficient hydroxyapatite (CDHA) is formed with the molar ratio Ca/P 1.63. Phase transformation from crystalline to an amorphous was clearly been detected from the XRD results through the decreasing of the peak intensity at 2 theta of 30.0° after immersing in the SBF. This supports the occurring of apatite formation mechanism on the β-wollastonite surface and possesses bioactive property.

AB - The mechanism of apatite formation on the β-wollastonite surface was studied. β-wollastonite was produced using the sol-gel technique from rice husk ash and calcined limestone as the starting material with CaO:SiO2 ratio of 55:45. Bioactivity of the β-wollastonite sample was studied by immersing a cylindrical form sample in a simulation body fluid solution (SBF) for a period of 1, 3, 7 and 14 days. Surface composition, morphology and structural of the sample before and after immersion were analyzed using X-ray diffraction (XRD) and scanning electron microscope (FESEM) coupled with EDX. The XRD results showed that β-wollastonite was successful obtained after autoclaving for 8 h at 135°C, with pressure at 0.24 MPa and sintered for 2 h at 950°C. Apatite was found to growth on the surface of β-wollastonite after 7 days of immersion in the SBF solution. During immersion in the SBF solution, two types of calcium phosphate groups were obtained, which is amorphous calcium phosphate (ACP) after 3 days of immersion with Ca/P ratio in the range of 1.2-2.02 and on the 14th day, calcium deficient hydroxyapatite (CDHA) is formed with the molar ratio Ca/P 1.63. Phase transformation from crystalline to an amorphous was clearly been detected from the XRD results through the decreasing of the peak intensity at 2 theta of 30.0° after immersing in the SBF. This supports the occurring of apatite formation mechanism on the β-wollastonite surface and possesses bioactive property.

KW - Apatite

KW - Bioactivity

KW - Calcined limestone

KW - Rice husk ash

KW - β-wollastonite

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AN - SCOPUS:85008172861

VL - 45

SP - 1779

EP - 1785

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 12

ER -