Manufacture of macroporous calcium hydroxyapatite (ha) and tri-calcium phosphate (tcp) bioceramics

Engin, Nedim Özgür


Manufacture of low porosity synthetic cordierite for use as saggers in firing of tiles and porcelain
Fesligil, Naime G; Atamer, Süha; Department of Chemical Engineering (1993)
Production of Silica Fume-Based Geopolymer Foams
Shakouri, Sahra; Erdoğan, Sinan Turhan (2018-09-14)
Production of silica fume-based geopolymeric foam
Shakouri, Sahra; Erdoğan, Sinan Turhan; Department of Civil Engineering (2017)
This study investigates the activation of silica fume powder with sodium hydroxide solutions, to produce foamy geopolymeric material. The powder was mixed with NaOH solutions of different concentration, at different solution-to-powder ratios and cured at 100 °C for different length of time. Upon to heating to 200-500 °C, a volume expansion up to 10 times of the initial paste volume took palace, and a porous structure resulted. Ground perlite, expanded perlite and basalt fibers were tested as additives to th...
Manufacture of macroporous calcium hydroxyapatite bioceramics
Engin, NO; Tas, AC (1999-01-01)
Trabecular bones of almost all vertebrate organisms basically consist of macroporous (55-70% interconnected porosity) bone mineral, i.e. calcium hydroxyapatite (HA: Ca-10(PO4)(6)(OH)(2)). The macroporosity observed in the trabecular bones then allows the ingrowth of the soft tissues and organic cells into the bone matrix. Sub-micron, chemically uniform, and high phase-purity HA powders produced in our laboratory were mixed, under vigorous ultrasonification, with methyl cellulose of appropriate amounts in th...
Production of sweetening syrups with functional properties
Yıldız (Yiğitarslan), Sibel; Kıncal, Suzan; Department of Chemical Engineering (2006)
Extraction of fructo-oligosaccharide syrups from grated jerusalem artichoke (JA) tubers was studied by water at 20-60°C by determining the yield, degree of polymerization (DP), product profile (DP of up to 6) and prebiotic effect using Lactobacillus plantarum on samples harvested between October and April, stored for 0-20 days. The optimum solvent to solid ratio was 4, the duration of shaking water bath extraction was 40 min and yield based on JA were 12-17%. Temperature was found to improve yield and funct...
Citation Formats
N. Ö. Engin, “Manufacture of macroporous calcium hydroxyapatite (ha) and tri-calcium phosphate (tcp) bioceramics,” Middle East Technical University, 1999.