Synthesis and characterization of hydroxyapatite nanobelts and nanoparticles

Wei, Kun; Wang, Yingjun; Lai, Chen; Ning, Chenyun; Wu, Dongxiao; Wu, Gang; Zhao, Naru; Chen, Xiaofeng; Ye, Jiandong

doi:10.1016/j.matlet.2004.08.034

Cited by 44 publications

(17 citation statements)

References 34 publications

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“…Calcium phosphate with different morphologies including nanoparticles [30,31], plate-like nanocrystals [32], nano-needles [33], whiskers/fibres/wires [34][35][36], mesoporous [35], nanotubes [37], nano-blades [38,39], and powders with three-dimensional (3-D) structures have been prepared [40][41][42]. The performance of calcium phosphates in applications depends greatly on its morphologies and chemical compositions.…”

Section: Synthesis Of Nanoscale Calcium Phosphatementioning

confidence: 99%

Nanostructured Calcium Phosphates: Preparation and Their Application in Biomedicine

Chen¹,

Zhu²,

Wu³

et al. 2012

Nano BioMed ENG

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Due to the similar chemical properties to the inorganic component in calcified tissues, synthetic calcium phosphate has been considered as ideal biomaterials with excellent biocompatibility. Nanostructured calcium phosphate materials play an important role in the formation of hard tissues in nature. It is reported that calcium phosphates materials in nano-size can mimic the dimensions of constituent components of calcified tissues. Recently, the synthesis and application of nanostructured calcium phosphate materials have become a very hot field. Lots of methods have been reported to prepare nanostructured calcium phosphate, and various morphologies including nanoparticles, plate-like nanocrystals, nano-needles, whiskers/fibres/ wires, mesoporous, nanotubes, nano-blades, and powders with three-dimensional (3-D) structures have been obtained. More studies of nanostructured calcium phosphates are expected in biomedical area, such as tissue engineering scaffolds, drug/gene delivery systems and multifunctional systems. In this article, the synthesis and application of nanostructured calcium phosphates are reviewed and discussed.

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Section: Synthesis Of Nanoscale Calcium Phosphatementioning

confidence: 99%

Nanostructured Calcium Phosphates: Preparation and Their Application in Biomedicine

Chen¹,

Zhu²,

Wu³

et al. 2012

Nano BioMed ENG

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“…97 Compositional changes such as surfactant concentration and the molar ratio of water to surfactant have also been shown to influence the size and shape of particle products. 98 …”

Section: Freeze Dryingmentioning

confidence: 99%

Recent developments in processing and surface modification of hydroxyapatite

Norton

Malik

Darr

et al. 2006

Advances in Applied Ceramics

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The present paper reviews the developments in the fields of bioceramic materials and laser surface microstructuring of materials. The clinical success of a bioceramic implant depends largely on the biological response at the implant interface in addition to the sufficiency of the mechanical properties for the application. The use of lasers in the present paper is largely to tailor the topography, surface properties and composition with a view to enhancing the implant biocompatibility. Developments in production methods for hydroxyapatite [HA: Ca 10 (PO 4 ) 6 (OH) 2 ] are also discussed with the advantages of producing nanocrystalline material via emulsion routes. The improved mechanical stability featured by nanocrystalline HA should promote clinical success in further load bearing applications.

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“…Block copolymers have been cast from a common solvent to generate interesting morphologies 4, 5. Bicontinuous domains in nonpolymeric fluids have been studied in which surfactants were used to stabilize the interface 6–10. Immiscible polymers have been melt‐processed as homopolymer blends and as block copolymers, and the resulting morphology has been studied 11, 12.…”

Section: Introductionmentioning

confidence: 99%

Mixed morphology by the extrusion of phase‐separated blends of a melt‐processed polymer and polymer solution

Drew

Bosselman

Ziegler

2008

J of Applied Polymer Sci

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The phase behavior and structure development in immiscible blends of melt-extruded polycaprolactone and a viscous aqueous poly(ethylene oxide) solution were investigated. The coextrusion of an aqueous polymer solution and a molten polymer is a largely unexplored technique and offers exciting potential for creating new materials via the execution of chemical reactions in the aqueous phase. Samples were prepared both with and without a block copolymer acting as a surface-active agent. The resulting morphology was characterized with scanning electron microscopy after the removal of the watersoluble phase. Spheres, rods, fibers, and cocontinuous gyroidal structures were observed, yet the exact phase inversion was not observed, and the changes in the feature shape depended on which component composed the major phase. Significant orientation in the flow direction was observed when the less viscous poly(ethylene oxide) was the major phase, whereas orientation was minimal when polycaprolactone was the major phase. These observations indicate that control of the feature shape and orientation may be accomplished through the control of the viscosity. The spontaneous formation of an outer layer of polycaprolactone in all samples was observed, suggesting that the morphology could be induced by control of the material interaction with the extruder die wall. The inclusion of a diblock copolymer significantly reduced the feature size but did not alter the morphology type.

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Synthesis and characterization of hydroxyapatite nanobelts and nanoparticles

Cited by 44 publications

References 34 publications

Nanostructured Calcium Phosphates: Preparation and Their Application in Biomedicine

Nanostructured Calcium Phosphates: Preparation and Their Application in Biomedicine

Recent developments in processing and surface modification of hydroxyapatite

Mixed morphology by the extrusion of phase‐separated blends of a melt‐processed polymer and polymer solution

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