The effect of Ca/P concentration and temperature of simulated body fluid on the growth of hydroxyapatite coating on alkali-treated 316L stainless steel

Lin, Feng‐Huei; Hsu, Yao-Shan; Lin, Shih‐Hsun; Sun, Jui‐Sheng

doi:10.1016/s0142-9612(02)00154-0

Cited by 92 publications

(56 citation statements)

References 25 publications

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“…Mineral deposition is thermodynamically more favorable with a temperature increase because the reaction potential increases. [39] However, the temperature effect alone cannot explain the results found in the PNIPAAm-modified composite films. In fact, an apatite layer was not formed in the unmodified composites at both temperatures studied.…”

Section: Full Papermentioning

confidence: 96%

Thermally Responsive Biomineralization on Biodegradable Substrates

Shi

Alves

Mano

2007

Adv Funct Materials

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Biomineralization offers an elegant example of how nature can design complex, hierarchical, and structurally/morphologically controllable materials. In this work, the surface of bioactive substrates prepared from poly(L‐lactic acid) and reinforced with Bioglass are modified by the graft polymerization of poly(N‐isopropylacrylamide), (PNIPAAm) after plasma activation. It is found that such treatment, together with temperature, could trigger the formation of apatite on the biodegradable substrate upon immersion in simulated body fluid above the PNIPAAm lower critical solution temperature (LCST); in contrast, no apatite is formed at room temperature. A control experiment on a material that is not subjected to surface treatment does not show any evidence of mineral deposition at the two analyzed temperatures. This “smart” biomineralization concept is combined with patterning methodologies to control the microstructure of the surface onto which PNIPAAm is grafted. In this case, the apatite is formed at 37 °C in the modified regions. We suggest that this concept could be extended in the biomimetic production of other minerals, where it would be triggered by another kind of stimulus (e.g., pH or ionic strength) in substrates with more complex geometries.

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Section: Full Papermentioning

confidence: 96%

Thermally Responsive Biomineralization on Biodegradable Substrates

Shi

Alves

Mano

2007

Adv Funct Materials

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“…The use of stainless steel 316L for surgical permanent prostheses with the presence of a natural apatite deposition on the surface seems to be very difficult, due to the need for high concentrate and dense HAp or A/W coatings [19,20]. The catalytic effect of Si-OH group and Ti-OH groups for the apatite nucleation has been proven to form apatite in silica and titania gels immersed in simulated body fluid (SBF) [21].…”

Section: Introductionmentioning

confidence: 99%

Improving the osteointegration and bone–implant interface by incorporation of bioactive particles in sol–gel coatings of stainless steel implants

et al. 2010

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“…The bands appearing around 3400 and 1600 cm À1 are attributed to stretching and bending vibrations of -OH group present in HAp and adsorbed water, respectively. The characteristic bands corresponding to -CO 3 2À appearing at 1420, 1457, and 1630 À1 indicate the precipitation of carbonated apatite onto the coated surface ( Ref 37,38). It is also seen that the characteristic peaks for the Si-O-Si, Zr-O-Zr, and Si-O-Zr were overlapped with the peaks corresponding to HAp peaks confirming further that the coatings remained on 316L SS and further accelerated the precipitation of HAp during exposure to SBF solution.…”

Section: In Vitro Bioactivity Of Coated 316l Ss In Sbf Solutionmentioning

confidence: 99%

Electrochemical Corrosion and In Vitro Bioactivity of SiO2:ZrO2-Coated 316L Stainless Steel in Simulated Body Fluid

Srinivasan

Rajendran

2015

J. of Materi Eng and Perform

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The effect of Si:Zr ratio on the in vitro bioactivity and electrochemical corrosion behavior of SiO 2 :ZrO 2 -mixed oxide-coated 316L stainless steel (SS) was evaluated in simulated body fluid (SBF) solution for 72, 120, and 168 h. Growth of Hydroxyapatite (HAp) was accelerated when Si content in the coating was increased. The Zr content in the coating improved the corrosion resistance of 316L SS rather than accelerating the HAp growth. When the Si:Zr ratio was 50:50, the coating exhibited significant improvement in corrosion resistance as well as HAp growth. The mechanism of HAp growth was proposed based on the change in surface zeta potential values of the coatings. Potentiodynamic polarization studies revealed about 10 and 5 times reduction in corrosion current density (i corr ) values for SiO 2 :ZrO 2 (50:50)-coated 316L SS after 168 h of immersion compared to SiO 2 , ZrO 2 , and Si:Zr (70:30) coatings in SBF solutions thus confirming the superior corrosion resistance. The equivalent circuit parameters derived from electrochemical impedance spectroscopy studies further confirmed significant improvement in charge transfer resistance value even after 168 h of exposure.

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The effect of Ca/P concentration and temperature of simulated body fluid on the growth of hydroxyapatite coating on alkali-treated 316L stainless steel

Cited by 92 publications

References 25 publications

Thermally Responsive Biomineralization on Biodegradable Substrates

Thermally Responsive Biomineralization on Biodegradable Substrates

Improving the osteointegration and bone–implant interface by incorporation of bioactive particles in sol–gel coatings of stainless steel implants

Electrochemical Corrosion and In Vitro Bioactivity of SiO2:ZrO2-Coated 316L Stainless Steel in Simulated Body Fluid

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