Hydroxyapatite/tricalcium silicate composites cement derived from novel two-step sol-gel process with good biocompatibility and applications as bone cement and potential coating materials

2019 ◽  
Vol 45 (5) ◽  
pp. 5668-5679 ◽  
Author(s):  
Wai-Ching Liu ◽  
Huey-Yuan Wang ◽  
Lung-Chien Chen ◽  
Shih-Wei Huang ◽  
Chengtie Wu ◽  
...  
Keyword(s):  
Bone Cement ◽  
Sol Gel ◽  
Tricalcium Silicate ◽  
Coating Materials ◽  
Sol Gel Process ◽  
Good Biocompatibility

Structural and Ferroelectric Properties of Bi4-xNixTi3O12 Thin Films by Sol-Gel Process

2006 ◽  
Vol 966 ◽  
Author(s):  
Ricardo Melgarejo ◽  
Maharaj S Tomar ◽  
Rahul Singhal ◽  
Ram S Katiyar
Keyword(s):  
Thin Films ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Low Frequency ◽  
X Ray Diffraction ◽  
Coating Materials ◽  
Low Field ◽  
Sol Gel Process ◽  
Raman Modes ◽  
Ferroelectric Memories

ABSTRACTNickel-substituted Bi4Ti3O12 (i.e., Bi4-xNixTi3O12) were synthesized by sol-gel process for different compositions. Thin films were deposited on Pt (i.e., Pt/TiO2/SiO2/Si) substrate by spin coating. Materials were characterized by x-ray diffraction and Raman spectroscopy. This study indicates that the material makes a solid solution for the compositions: x = 0.00, 0.05, 0.10, 0.15, 0.20, and 0.30, where a Ni ion replaces the Bi site. The prominent effect of Ni substitution was observed in low-frequency Raman modes. Sol-gel derived thin films of Bi4-xNixTi3O12 on a Pt substrate and post annealed at 700°C were tested for ferroelectric response which showed high remnant polarization (Pr = 22 μC/cm2 for x = 0.15). The leakage current (less then 10−7 A/cm2) at low field was observed in the film with composition x = 0.15 .The polarization of the BNiT (x = 0.15) film decreased to 83% of the initial value after 1×109 switching cycles These results indicate the potential application of Ni substituted bismuth titanate films in non-volatile ferroelectric memories.

Macroporous Hydroxyapatite Scaffold Fabricated by Foam Impregnation

2005 ◽  
Vol 288-289 ◽  
pp. 565-570 ◽  
Author(s):  
Y.S. Dong ◽  
B. Liu ◽  
Ping Hua Lin ◽  
Q.G. Zhang ◽  
Yong Ping Pu
Keyword(s):  
Sol Gel ◽  
Ceramic Surface ◽  
Ceramic Slurry ◽  
Hydroxyapatite Powder ◽  
Sol Gel Process ◽  
Aluminum Phosphates ◽  
Good Biocompatibility ◽  
Hydroxyapatite Scaffold ◽  
Sem Analyses

Submicron hydroxyapatite powder with particle size in the range of 80-250 nm was fabricated by sol-gel process in our laboratory. To make ceramic slurry with good flowability, the powder was mixed with binder and distilled water. The binder was consisted of acid magnesium and aluminum phosphates. The polyurethane foam was impregnated in the slurry, squeezed out the excess slurry and the composite porous body gained. Green body was dried in room temperature naturally and then moved to electric furnace and sintered at high temperature. The sintered scaffolds possess interconnected open pore structure and with a porosity of 70-85% and compressive strength 10-20 MPa, and was consisted of doped HA and other phosphates. The scaffolds were co-cultured with osteoblasts in vitro. SEM analyses revealed that the cells adhere to the ceramic surface, proliferate and growth properly. Experimental results showed that the scaffold possesses good biocompatibility and could be used in bone tissue engineering.

UV-absorption and thermal properties of Pb-doped glymo/damo-derived coating materials prepared by sol–gel process

2005 ◽  
Vol 40 (21) ◽  
pp. 5779-5782 ◽  
Author(s):  
F. Sayilkan ◽  
M. Asiltürk ◽  
M. G. İçduygu ◽  
H. Sayilkan
Keyword(s):  
Thermal Properties ◽  
Sol Gel ◽  
Uv Absorption ◽  
Coating Materials ◽  
Sol Gel Process

Hard-coating materials for poly(methyl methacrylate) from glycidoxypropyltrimethoxysilane-modified silatrane via a sol–gel process

2006 ◽  
Vol 200 (8) ◽  
pp. 2784-2790 ◽  
Author(s):  
Walairat Tanglumlert ◽  
Pattarapan Prasassarakich ◽  
Pitt Supaphol ◽  
Sujitra Wongkasemjit
Keyword(s):  
Methyl Methacrylate ◽  
Sol Gel ◽  
Hard Coating ◽  
Coating Materials ◽  
Poly Methyl Methacrylate ◽  
Sol Gel Process

scholarly journals Influence of Fluorine-Containing Monomer Content on the Hydrophobic and Transparent Properties of Nanohybrid Silica Polyacrylate Coating Materials

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4261
Author(s):  
Chih-Ming Huang ◽  
Her-Yung Wang ◽  
Sing-Yuan Fang ◽  
Wein-Duo Yang
Keyword(s):  
Sol Gel ◽  
Weight Ratio ◽  
Hybrid Coating ◽  
Coating Film ◽  
Hydrophobic Properties ◽  
Coating Materials ◽  
Water Contact ◽  
Light Region ◽  
Sol Gel Process ◽  
Monomer Content

Nanosilica-modified, fluorine-containing polyacrylate hybrid coating materials, consisting of dodecafluoroheptyl methacrylate (DFMA), methyl methacrylate (MMA), 2-ethyl hexyl acrylate (2-EHA), 3-(trimethoxysilyl) propyl methacrylate (KH-570), and tetraethylorthosilicate (TEOS), are synthesized successfully by free radical polymerization and the sol–gel process. It is revealed that the content of the fluorine-containing polyacrylate hybrid coating materials from DFMA monomers significantly improves the properties of the films. The polyacrylate coating film prepared with a weight ratio of DFMA/MMA at 1:5 exhibits the largest water contact angle of 105.4°, which demonstrates that DFMA can effectively improve the hydrophobicity of the coating film. Moreover, the silicon coupling agent (KH-570) is used to graft silica with acrylate. Spherical in shape, the surface morphology of the nanohybrid film exhibits a core–shell structure, which increases the surface roughness and enhances the hydrophobic properties. The as-prepared fluorine-containing nanohybrid silica polyacrylate film possesses a high transmittance of 89–97% in the visible light region, indicating its potential as a very attractive solution in many practical areas.

Study on strontium doped tricalcium silicate synthesized through sol-gel process

2020 ◽  
Vol 108 ◽  
pp. 110431 ◽  
Author(s):  
Wai-Ching Liu ◽  
Chih-Chien Hu ◽  
Yuan-Yun Tseng ◽  
Rajalakshmi Sakthivel ◽  
Kuei-Sheng Fan ◽  
...  
Keyword(s):  
Sol Gel ◽  
Tricalcium Silicate ◽  
Sol Gel Process

Ceria-Doped Titania Nanoparticles as Drug Delivery System

2020 ◽  
Vol 20 (7) ◽  
pp. 3971-3980
Author(s):  
A. Torres-Romero ◽  
M. Cajero-Juárez ◽  
R. E. Nuñez-Anita ◽  
M. E. Contreras-García
Keyword(s):  
Drug Delivery ◽  
B Lymphocyte ◽  
Sol Gel ◽  
Titania Nanoparticles ◽  
Target Cells ◽  
Drug Molecules ◽  
Sol Gel Process ◽  
Good Biocompatibility ◽  
Doped Titania ◽  
Lymphocyte Cell

The development of new devices at the nanoscale level, as therapeutic support in medical practice, has facilitated the development of drug delivery systems (DDSs) based on nanoparticles. This enables the transport of an effective dose of therapeutic agents to target cells or tissues, with no collateral damage to healthy cells. Owing to their unique properties, nanoparticles doped with rare earths have demonstrated the potential of being used as a DDS of drug molecules to target cells or tissues. In the present work, ceria-doped titania nanoparticles (CeO2/TiO2NPs) were used to form the DNR-CeO2/TiO2NPs complex as a DDS of daunorubicin (DNR), which was tested in a B-lymphocyte cell culture. The CeO2/TiO2NPs were synthesized via the sol–gel process in a microemulsion of reverse micelle. In general, the results indicated that the nanoparticles presented good biocompatibility and load efficiency superior to that reported in other investigations for pure titania nanoparticles, suggesting that the CeO2/TiO2NPs increased intracellular accumulation of the drug. These results indicate that a delivery strategy using CeO2/TiO2NPs is a promising approach in the medical field, particularly in anticancer therapies.

scholarly journals Synthesis and Characterization of Lanthanum Zinc Aluminate.

2019 ◽  
Vol 9 (2S2) ◽  
pp. 188-190
Keyword(s):  
Sol Gel ◽  
Synthesis And Characterization ◽  
Thermal Barrier ◽  
Distilled Water ◽  
Zinc Aluminate ◽  
Coating Materials ◽  
Temperature Resistance ◽  
Barrier Coating ◽  
Sol Gel Process

Thermal barrier coating materials (TBC) are temperature resistance material which is applied to components in gas turbine or rocker engine in order to improve the life of the component. In this work, the lanthanum Zinc Aluminate are extracted in the form of powder and synthesized using the sol gel process. For sol gel process, Sample of different weight are taken and mixed with distilled water and these are prepared with a controlled stoichiometry by mixing of components. The powder which is obtained from the sol-gel process is to be characterized and the reported.

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