Preparation and properties of bimodal porous apatite ceramics through slip casting using different hydroxyapatite powders

Zhang, Yin; Yokogawa, Yoshiyuki; Feng, Xiao; Tao, Yaqiu; Li, Yuanqiang

doi:10.1016/j.ceramint.2009.07.008

Cited by 40 publications

(12 citation statements)

References 24 publications

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“…Since calcium orthophosphates are either thermally unstable (MCPM, MCPA, DCPA, DCPD, OCP, ACP, CDHA) or have a melting point at temperatures exceeding ~1400 °C with a partial decomposition (α-TCP, β-TCP, HA, FA, TTCP), only the first and the second consolidation approaches are used to prepare bulk bioceramics and scaffolds. The methods include uniaxial compaction [198,199,200], isostatic pressing (cold or hot) [108,201,202,203,204,205,206,207], granulation [208,209,210,211,212,213], loose packing [214], slip casting [93,215,216,217,218,219,220], gel casting [188,189,221,222,223,224,225], pressure mold forming [226], injection molding [227,228,229], polymer replication [230,231,232,233,234,235,236,237], extrusion [238,239,240,241,242], slurry dipping and spraying [243]. In addition, to form ceramic sheets from slurries, tape casting [105,223,244,245,246], doctor blade [247] and colander me...…”

Section: Bioceramics Of Calcium Orthophosphatesmentioning

confidence: 99%

“…Many other techniques, such as replication of polymer foams by impregnation [230,231,232,235,492,493,494,495] (Figure 7), various types of casting [217,219,223,225,496,497,498,499,500,501,502,503,504,505], suspension foaming [120], surfactant washing [506], as well as several other approaches [86,89,92,161,507,508,509,510,511,512,513,514,515,516,517,518,519,520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,539,540,541...…”

Section: The Major Propertiesmentioning

confidence: 99%

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Calcium Orthophosphate-Based Bioceramics

Dorozhkin¹

2013

Materials

231

153

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Various types of grafts have been traditionally used to restore damaged bones. In the late 1960s, a strong interest was raised in studying ceramics as potential bone grafts due to their biomechanical properties. A bit later, such synthetic biomaterials were called bioceramics. In principle, bioceramics can be prepared from diverse materials but this review is limited to calcium orthophosphate-based formulations only, which possess the specific advantages due to the chemical similarity to mammalian bones and teeth. During the past 40 years, there have been a number of important achievements in this field. Namely, after the initial development of bioceramics that was just tolerated in the physiological environment, an emphasis was shifted towards the formulations able to form direct chemical bonds with the adjacent bones. Afterwards, by the structural and compositional controls, it became possible to choose whether the calcium orthophosphate-based implants remain biologically stable once incorporated into the skeletal structure or whether they were resorbed over time. At the turn of the millennium, a new concept of regenerative bioceramics was developed and such formulations became an integrated part of the tissue engineering approach. Now calcium orthophosphate scaffolds are designed to induce bone formation and vascularization. These scaffolds are often porous and harbor different biomolecules and/or cells. Therefore, current biomedical applications of calcium orthophosphate bioceramics include bone augmentations, artificial bone grafts, maxillofacial reconstruction, spinal fusion, periodontal disease repairs and bone fillers after tumor surgery. Perspective future applications comprise drug delivery and tissue engineering purposes because calcium orthophosphates appear to be promising carriers of growth factors, bioactive peptides and various types of cells.

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Section: Bioceramics Of Calcium Orthophosphatesmentioning

confidence: 99%

Section: The Major Propertiesmentioning

confidence: 99%

Calcium Orthophosphate-Based Bioceramics

Dorozhkin¹

2013

Materials

231

153

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Section: Introductionmentioning

confidence: 99%

Development of an Asymmetric Ultrafiltration Membrane from Naturally Occurring Kaolin Clays: Application for the Cuttlefish Effluents Treatment

Rekik¹,

Bouaziz²,

Deratani³

et al. 2016

J Membra Sci Technol

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This work concerns to the development and characterization of support and ultrafiltration membranes from naturally occurring-kaolin clays as principal components. The preparation and characterization of porous tubular supports, using kaolin powder with corn starch as poreforming agent, were reported. It has been found that the average pore size was about 1 μm while the pore volume was 44% for supports sintered at 1150°C with a flexural strength of about 15 MPa. The deposition of the active layer was performed by slip casting method. The rheological study of various coatings with different concentration of kaolin powder, polyvinyl alcohol (PVA) and water under different conditions regarding temperature and stirring time was done. After drying at room temperature for 24 h, the membrane was sintered at 650°C. The average pore diameter of the active layer was 11 nm and the thickness was around 9 µm. The determination of the water permeability shows a value of 78 l/h.m 2 .bar. This membrane can be used for crossflow ultrafiltration. The application of the cuttlefish effluent treatment shows an important decrease of turbidity, inferior to 1.5 NTU and chemical organic demand (COD), retention rate of about 87%. So, it seems that this membrane is suitable to use for wastewater treatment.

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“…Many studies reported in the literature, treated as subject the rheological behavior of systems like "water-apatite-additive" and "water-clay-additive" where the additives were often a polymer. Most of these studies were devoted to the colloidal and/or rheological properties of these suspensions and on the effect of polymeric additives in order to obtain the optimal composition of the suspension [3,[17][18][19][20]. These suspensions exhibit a pseudoplastic behavior which is characterized by a decrease in viscosity with an increase in the rate of shearing according to the dispersant concentration [17].…”

Section: Introductionmentioning

confidence: 99%

“…Most of these studies were devoted to the colloidal and/or rheological properties of these suspensions and on the effect of polymeric additives in order to obtain the optimal composition of the suspension [3,[17][18][19][20]. These suspensions exhibit a pseudoplastic behavior which is characterized by a decrease in viscosity with an increase in the rate of shearing according to the dispersant concentration [17]. The rheological study for a suspension of hydroxyapatite -alumina platelets-dispersion, including a percentage less than 30% vol of Al 2 O 3 exhibited a quasi-Newtonian behavior maintained in all suspensions beyond 30% vol Al 2 O 3 [20].…”

Section: Introductionmentioning

confidence: 99%