Template-directed one-step synthesis of flowerlike porous carbonated hydroxyapatite spheres

He, Qian; Huang, Zhiliang; Liu, Yu; Chen, Wei; Xu, Tao

doi:10.1016/j.matlet.2006.04.082

Cited by 81 publications

(46 citation statements)

References 35 publications

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“…• C. Recently, He et al [181] and Cheng et al [182] fabricated nanostructured HAp porous microspheres by employing homogeneous precipitation methods with calcium-chelated phosphate solution in the presence of CO 2 bubbles as a hollow template.…”

Section: Hydrothermal Crystal Growthmentioning

confidence: 99%

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Okada

Furuzono

2012

Science and Technology of Advanced Materials

123

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Hydroxylapatite (or hydroxyapatite, HAp) exhibits excellent biocompatibility with various kinds of cells and tissues, making it an ideal candidate for tissue engineering, orthopedic and dental applications. Nanosized materials offer improved performances compared with conventional materials due to their large surface-to-volume ratios. This review summarizes existing knowledge and recent progress in fabrication methods of nanosized (or nanostructured) HAp particles, as well as their recent applications in medical and dental fields. In section 1, we provide a brief overview of HAp and nanoparticles. In section 2, fabrication methods of HAp nanoparticles are described based on the particle formation mechanisms. Recent applications of HAp nanoparticles are summarized in section 3. The future perspectives in this active research area are given in section 4.

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Section: Hydrothermal Crystal Growthmentioning

confidence: 99%

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Okada

Furuzono

2012

Science and Technology of Advanced Materials

123

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“…We note, for composite materials, the presence of the band around 3400 cm -1 due to the vibrations of stretching of OH group.The intensity of this band increases with the rate of reinforcement, compared with HT2 and HT3 alone, because it covers both band O-H of the hydroxyl groups of the Hydrotalcite layers and band O-H of vibration of elongation of the alcohol functions of the cellulose [22].The absorption bands located around 2924 cm -1 and 1060 cm -1 observed on the spectra of MCC-HTx.2%, MCC-HTx.5%, MCC-HTx.10% (x=2 or 3), are respectively associated with 1100-400 cm stretching vibration of cellulose C-H [23,24] and the anti-symmetric vibrations of elongations C-O-C of glycosidic linkage [25].The presence of the CH group is supported by the band of vibration around 1460 cm -1 as it was observed by UlIslama et al [26] during the preparation of the bacterial cellulose-montmorillonite composite for medical applications.…”

Section: Study By Ir Spectroscopymentioning

confidence: 89%

Effect of the Mg/Al ratio and of the rate of reinforcement on the synthesis of a nanocomposite Cellulose/Hydrotalcite

Bennani

2014

JAC

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The objective of this work is to synthesize a nonmaterial by introducing synthetic clay (hydrotalcite) as a nanofiller in a natural polymer matrix (cellulose) and to study the effect of Mg/Al ratio and the rates of reinforcement.Cellulose fibers were extracted from "Yucca" tree"s leaves by a chemical treatment and Hydrotalcite (MgAlCO3) was synthesized by the method of co-precipitation at fixed pH with a ratio of Mg/Al=2 or 3.The composite materials were elaborated by microwave activation.The Hydrotalcites with an Mg/Al ratio = 2 or 3 were tested as well as various rates of reinforcement (2, 5 or 10% Hydrotalcite) in order to optimize conditions of obtaining a nanomaterial.The structures of obtained materials were characterized by IR spectroscopy, X-ray Diffraction and Transmission Electron Microscopy. The thermal stability was analyzed by TG-DTA analyses.The characterizations carried out on these compounds revealed structural modifications in agreement with the formation of a nanomaterial (cellulose/Hydrotalcite) with the improved thermal properties.

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“…Field-emission SEM (FE-SEM S-4300SE) and energy-dispersive X-ray spectrometry (EDS) (Hitachi) were used to monitor the surface morphology and composition of these samples. At each time point (6,12,24,48, and 96 hours), the samples were taken out and the ion concentrations of calcium, phosphorus, magnesium, and silicon in the SBF solution were measured using inductively coupled plasma atomic emission spectroscopy (ICP-AES; IRIS 1000, Thermo Scientific).…”

Section: In Vitro Bioactivitymentioning

confidence: 99%

“…9,10 Studies have focused on the bioactive composites created by combining biodegradable polymers and bioactive inorganic materials such as bioglass, calcium phosphate, and silicate. 11,12 However, to our knowledge, there has been no report about the preparation of mesoporous magnesium silicate (m-MS) and PCL-PEG-PCL bioactive composite for use as bone repair material. It is expected that the biological performance of polymer-based bioactive composite should be improved if m-MS were incorporated into PCL-PEG-PCL.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous magnesium silicate-incorporated poly(ε-caprolactone)-poly(ethylene glycol)- poly(ε-caprolactone) bioactive composite beneficial to osteoblast behaviors

Niu¹,

Dong²,

Guo³

et al. 2014

IJN

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Mesoporous magnesium silicate (m-MS) and poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL) composite (m-MPC) was synthesized by solvent casting method. The results suggest that the mechanical properties of compressive strength and elastic modulus, as well as hydrophilicity, of the m-MPC increased with increase of m-MS content in the composites. In addition, the weight loss of the m-MPC improved significantly with the increase of m-MS content during composite soaking in phosphate-buffered saline for 10 weeks, indicating that incorporation of m-MS into PCL-PEG-PCL could enhance the degradability of the m-MPC. Moreover, the m-MPC with 40 w% m-MS could induce a dense and continuous apatite layer on its surface after soaking in simulated body fluid for 5 days, which was better than m-MPC 20 w% m-MS, exhibiting excellent in vitro bioactivity. In cell cultural experiments, the results showed that the attachment and viability ratio of MG63 cells on m-MPC increased significantly with the increase of m-MS content, showing that the addition of m-MS into PCL-PEG-PCL could promote cell attachment and proliferation. The results suggest that the incorporation of m-MS into PCL-PEG-PCL could produce bioactive composites with improved hydrophilicity, degradability, bioactivity, and cytocompatibility.

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Template-directed one-step synthesis of flowerlike porous carbonated hydroxyapatite spheres

Cited by 81 publications

References 35 publications

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Effect of the Mg/Al ratio and of the rate of reinforcement on the synthesis of a nanocomposite Cellulose/Hydrotalcite

Mesoporous magnesium silicate-incorporated poly(ε-caprolactone)-poly(ethylene glycol)- poly(ε-caprolactone) bioactive composite beneficial to osteoblast behaviors

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Template-directed one-step synthesis of flowerlike porous carbonated hydroxyapatite spheres

Cited by 81 publications

References 35 publications

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Hydroxylapatite nanoparticles: fabrication methods and medical applications

Effect of the Mg/Al ratio and of the rate of reinforcement on the synthesis of a nanocomposite Cellulose/Hydrotalcite

Mesoporous magnesium silicate-incorporated poly(&epsilon;-caprolactone)-poly(ethylene glycol)- poly(&epsilon;-caprolactone) bioactive composite beneficial to osteoblast behaviors

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Mesoporous magnesium silicate-incorporated poly(ε-caprolactone)-poly(ethylene glycol)- poly(ε-caprolactone) bioactive composite beneficial to osteoblast behaviors