geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Wet synthesis and characterization of fluoride-substituted hydroxyapatite


, : Wet synthesis and characterization of fluoride-substituted hydroxyapatite. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 18(2): 173-176

Hydroxyapatite and fluoride-substituted hydroxyapatite powders are synthesized by wet method, compacted into pellets and subjected to heat treatment at 300, 600, 900 degrees C respectively. Analysis of the fluoride-substituted hydroxyapatites and HA by FTIR spectroscopy indicated that with the increasing of sintering temperatures, the phase-pure fluoride-substituted hydroxyapatite and stoichiometric hydroxyapatite could be got. According to the X-ray diffraction analysis, the fluoride-substituted hydroxyapatite is less stable for decomposing into beta-Ca3(PO4)2 at the temperature of 900 degrees C. The in vitro bioactivity of the fluoride-substituted hydroxyapatites and hydroxyapatite heat treated at 900 degrees C was assessed by immersion testing in simulated body fluid (SBF). Both scanning electron microscopy (SEM) analysis and ionic solution changes (Ca2+) demonstrated that the low fluoride content apatite could induce a surface bonelike apatite layer formation.

US$29.90

PMID: 11450527


Other references

Mishra, M.; Mishra, S.N.; Patra, G.J., 2000: Effect of depth of planting and mulching on rainfed turmeric (Curcuma longa). An experiment was conducted in India during 1995-96 and 1996-97 to determine the effect of planting depth and mulching on rain-fed turmeric cv. Roma. The different planting depths were 2.5, 5.0, 7.5, 10.0, 12.5 and 15.0 cm. The types of mulches we...

Garcia-Jimenez, A.; Cowburn, R., F.; Einblad, B.; Fastbom, J., 1998: Inhibition of (3H)forskolin binding by Gpp(NH)p may reflect adenylyl cyclase coupling to Gi. The effect of the GTP-analogue guanylyl 5'-imidodiphosphate (Gpp(NH)p) on (3H)forskolin binding was studied in rat brain using autoradiography. In the striatum, 100 muM Gpp(NH)p produced a 40% increase in binding, whereas a decrease of about...

Maclean, H.R., 1965: Faculty Of Dentistry, University Of Alberta. Journal of the Canadian Dental Association 31: 289-292

Auld, B.A., 1990: Mycoherbicides: new tools in weed management. The use of mycoherbicides is discussed. Examples are given of existing mycoherbicides, i.e. in the USA, Phytophthora palmivora (Devine) and Colletotrichum gloeosporioides [Glomerella cingulata]f. sp. aeschynomene (Collego) to control Morrenia odor...

Batchelor, K.W.; Stanworth, D.R., 1980: A comparison of the histamine-releasing properties of rat pleural and peritoneal mast cells. A comparison has been made of the histamine-releasing characteristics of rat mast cells of pleural and peritoneal origin in response to a wide variety of immunological and non-immunological stimuli, namely, IgE antibody-antigen interaction; rabbit...

Volgger, B.; Petru, E.; Angleitner-Boubenizek, L.; Weigert, M.; Reinthaller, A.; Lass, H.; Stempfl, A.; Gamper, C.; Deibl, M.; Marth, C., 2009: Erythropoetin beta twice weekly versus standard therapy in patients with gynaecological malignancies--a randomised Austrian AGO trial. The influence of two regimens of erythropoetin beta on haemoglobin level, quality of life (QoL) and side-effects in patients with gynaecological malignancies was assessed. A total of 119 patients during chemotherapy were randomised to either stand...

Bergez, J.E.; Dalziel, A.J.I.; Duller, C.; Eason, W.R.; Hoppe, G.; Lavender, R.H., 1997: Light modification in a developing silvopastoral system in the UK: A quantitative analysis. Transmitted photosynthetically active radiation (PAR) was measured in eight-year-old silvopastoral stands at three different locations in the UK by using PAR sensors randomly distributed between four adjacent trees planted in a square pattern. Two...

Willey, R.W.; Reddy, M.S.; Natarajan, M., 1987: Conventional cropping systems for Alfisols and some implications for agroforestry systems. ICRISAT's work on conventional annual cropping systems for Alfisols is summarized, and the implications for agroforestry systems examined. The importance of intercropping systems is emphasized as a means of increasing cropping intensity above...

Dargaville, P.A.; Campbell, N.T., 1999: Pulvis parturiens and neonatal ergometrine poisoning in the 19th Century. Pediatric Research 45(4 PART 2): 122A, April

Iffland, R.; Schmidt, V.; Oehmichen, M.; Schmidtmann, U.; Norpoth, T., 1988: Acetone and isopropanol concentration of blood in relation to acute and chronic alcoholism. Blutalkohol 25(2): 80-96