نتایج جستجو برای: hydroxyapatite nanocomposite

تعداد نتایج: 23728  

Journal: :Bioceramics Development and Applications 2010

2010
Mahmoud Azami

The use of bioscaffolds for tissue repair is widely accepted. They can provide structural stability and a 3D system on which cells can grow new tissue. Natural bone is composed of organic (mainly collagen) and mineral biomaterials (predominantly carbonate hydroxyapatite, HA). In recent years, developments in 3D porous-scaffold manufacturing have increased hopes of successful fabrication of stru...

Nowadays, titanium-based alloys are among the most attractive metallic materials for biomedical applications (as implants) due to their non-biodegradability, low density, good mechanical properties as well as their good biocompatibility. Hydroxyapatite (Ca10 (PO4)6(OH)2, HA) has been widely used for biomedical applications due to its bioactive, biocompatible and osteoconductive properties. Firs...

Journal: :Carbohydrate polymers 2017
Seyed Mohammad Davachi Behzad Shiroud Heidari Iman Hejazi Javad Seyfi Erfan Oliaei Arman Farzaneh Hamid Rashedi

In this study, an optimized interface-modified ternary blend with antibacterial activity based on polylactic acid/starch/poly ε-caprolactone (PLASCL20), mixed with nano hydroxyapatite (nHA) via melt blending. This method results in a homogeneous nanocomposite blend in which the addition of 3% nHA improves the overall properties such as hydrolytic degradation, hydrophilicity, antibacterial activ...

Journal: :Acta biomaterialia 2009
M A Baker S L Assis O Z Higa I Costa

Titanium alloys are known to nucleate an apatite layer when in contact with simulated body fluid. This improves the bioactivity of titanium implants and accelerates osseointegration. Promoting the formation of hydroxyapatite on biocompatible metals is, therefore, a very important topic of biomaterials research. In this paper, the formation of hydroxyapatite (HA) on the near-beta Ti-13Nb-13Zr al...

2009
Nabakumar Pramanik Debasish Mishra Indranil Banerjee Tapas Kumar Maiti Parag Bhargava Panchanan Pramanik

A novel bioanalogue hydroxyapatite (HAp)/chitosan phosphate (CSP) nanocomposite has been synthesized by a solution-based chemical methodology with varying HAp contents from 10 to 60% (w/w). The interfacial bonding interaction between HAp and CSP has been investigated through Fourier transform infrared absorption spectra (FTIR) and x-ray diffraction (XRD). The surface morphology of the composite...

درخشی, منصوره, شاه طهماسبی, ناصر, عربی, هادی,

: Hydroxyapatite (Ca10(PO4)6(OH)2) with the hexagonal crystal structure is the only identifiable mineral phase of bone. In this work, magnesium ferrite-hydroxyapatite nanocomposites were synthesized for the purpose of medical applications. The first step of this work is the synthesis of mesoporous hydroxyapatite nanorods via co-precipitation method in combination with micelles template. Non-ion...

2011
H. W. Tong M. Wang

Due to osteoconductivity of hydroxyapatite (HA), HA/polymer composite scaffolds have been investigated for bone tissue engineering by various groups. In scaffold fabrication, electrospinning of ultrafine fibrous scaffolds incorporated with substantial amounts of evenly distributed HA nanoparticles is still a challenge. The problem of nanoparticle agglomeration not only reduces the electrospinni...

Bone healing is still a great challenge in orthopedic surgery and clinical practice. There is a dearth of research investigating the effect of Zeolite/Collagen (ZC) nanocomposite on bone regeneration. In the present study, a critical segmental defect of the rabbit femur was repaired using defects in femurs repaired by ZC nanocomposite, and the effects were examined histologically. In total, 45 ...

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