Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Polymer-assisted deposition of hydroxyapatite coatings using electrophoretic technique
AU - Mehboob, H.
AU - Awais, M.
AU - Khalid, H.
AU - Ch, A.A.
AU - Siddiqi, S.A.
AU - Rehman, I.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - Hydroxyapatite (HA) finds use as powder, scaffold, paste, and coatings for orthopedic and dental applications. Plasma spraying is the most commonly used technique to coat HA on metallic implants. However, undesirable phase changes at high temperatures encourage to adopt ambient temperature deposition techniques such as dip coating, electrophoretic, and physical vapor deposition (PVD). Electrophoretic technique is being used extensively to deposit HA, however sintering is required after the deposition to enhance adhesion of coatings to the substrate. In the present work, polyethylene glycol (PEG) modified HA was deposited on 316L Stainless Steel plates using electrophoretic deposition (EPD), which improved the binding strength of the HA to the substrate with increased packing density of HA particles without the need of sintering. PEG is a biocompatible and soluble polymer that helps HA to bond well with the substrate and in addition, prevents the agglomeration and precipitation of HA. Phase identification and crystal structure of the coatings were determined using X-ray diffraction (XRD). The stability of the coatings was assessed by Fourier transform infrared spectroscopy (FTIR), whereas scanning electron microscopy (SEM) was utilized in order to investigate the morphological properties of the deposited coatings. The mechanical properties of the coatings were investigated using the indentation testing that depicted an enhanced level of adhesion of coatings to the substrate. © 2014 National Taiwan University.
AB - Hydroxyapatite (HA) finds use as powder, scaffold, paste, and coatings for orthopedic and dental applications. Plasma spraying is the most commonly used technique to coat HA on metallic implants. However, undesirable phase changes at high temperatures encourage to adopt ambient temperature deposition techniques such as dip coating, electrophoretic, and physical vapor deposition (PVD). Electrophoretic technique is being used extensively to deposit HA, however sintering is required after the deposition to enhance adhesion of coatings to the substrate. In the present work, polyethylene glycol (PEG) modified HA was deposited on 316L Stainless Steel plates using electrophoretic deposition (EPD), which improved the binding strength of the HA to the substrate with increased packing density of HA particles without the need of sintering. PEG is a biocompatible and soluble polymer that helps HA to bond well with the substrate and in addition, prevents the agglomeration and precipitation of HA. Phase identification and crystal structure of the coatings were determined using X-ray diffraction (XRD). The stability of the coatings was assessed by Fourier transform infrared spectroscopy (FTIR), whereas scanning electron microscopy (SEM) was utilized in order to investigate the morphological properties of the deposited coatings. The mechanical properties of the coatings were investigated using the indentation testing that depicted an enhanced level of adhesion of coatings to the substrate. © 2014 National Taiwan University.
KW - Adhesion
KW - Coatings
KW - Indentation (normal)
KW - Polymers
KW - Biocompatibility
KW - Crystal structure
KW - Deposition
KW - Electrophoresis
KW - Fourier transform infrared spectroscopy
KW - Hydroxyapatite
KW - Physical vapor deposition
KW - Plasma spraying
KW - Plastic coatings
KW - Powder coatings
KW - Scanning electron microscopy
KW - Sintering
KW - Stainless steel
KW - Vapor deposition
KW - X ray diffraction
KW - 316 L stainless steel
KW - Dental applications
KW - Electrophoretic depositions
KW - Hydroxyapatite coating
KW - Morphological properties
KW - Phase identification
KW - Polymer-assisted deposition
KW - Temperature deposition
KW - Electrophoretic coatings
KW - hydroxyapatite
KW - macrogol
KW - polymer
KW - stainless steel
KW - adhesion
KW - Article
KW - crystal structure
KW - density
KW - electrophoresis
KW - infrared spectroscopy
KW - material coating
KW - molecular stability
KW - particle size
KW - precipitation
KW - scanning electron microscopy
KW - surface property
U2 - 10.4015/S1016237214500732
DO - 10.4015/S1016237214500732
M3 - Journal article
VL - 26
JO - Biomedical Engineering - Applications, Basis and Communications
JF - Biomedical Engineering - Applications, Basis and Communications
SN - 1016-2372
IS - 6
M1 - 1450073
ER -