Facile One‐Step Synthesis of Calcium Phosphate/Cellulose Composite: Synthesis, Morphology, Structure and Properties

2021 ◽  
Vol 398 (1) ◽  
pp. 2000264
Author(s):  
Meldin Mathew ◽  
Nathalie Lyczko ◽  
Ange Nzihou ◽  
Sabu Thomas
Keyword(s):  
Calcium Phosphate ◽  
Structure And Properties ◽  
One Step ◽  
Cellulose Composite ◽  
Composite Synthesis

A protocol to develop crack-free biomimetic coatings on Ti6Al4V substrates

2007 ◽  
Vol 22 (6) ◽  
pp. 1593-1600 ◽  
Author(s):  
Sahil Jalota ◽  
Sutapa Bhaduri ◽  
Sarit B. Bhaduri ◽  
A. Cuneyt Tas
Keyword(s):  
Water Treatment ◽  
Calcium Phosphate ◽  
Alkali Treatment ◽  
Sodium Titanate ◽  
Calcium Phosphate Coating ◽  
First Case ◽  
Phosphate Coatings ◽  
Biomimetic Coating ◽  
One Step ◽  
Calcium Phosphate Coatings

Biomimetic coating of titanium and related alloys with carbonated apatitic calcium phosphate is an important area of research in implantology. While this paper specifically refers to coating Ti6Al4V, the results are valid with other related alloys as well. One step in the protocol involves an intermediate alkali treatment of Ti6Al4V to form a sodium titanate layer on the alloy surface. This pretreatment enhances the formation of the coating from simulated body fluid (SBF) solutions. Many papers in the biomimetic coating literature demonstrate the presence of cracks in coatings, irrespective of the SBF compositions and placement of the substrates. The presence of cracks may result in degradation and delamination of coatings. To the best of our knowledge, this issue remains unresolved. Therefore, the aim of this study was: (i) to examine and understand the reasons for cracking and (ii) based on the results, to develop a protocol for producing crack-free apatitic calcium phosphate coatings on Ti6Al4V substrates. In this study, the authors focused their attention on the alkali treatment procedure and the final drying step. It is hypothesized that these two steps of the process affect the crack formation the most. In the first case, the surfaces of alkali-treated substrates were examined with/without water-soaking treatment before immersing in SBF. This water treatment modifies the sodium titanate surface layer. In the second case, two different drying techniques (after soaking in SBF) were used. In one procedure, the coated substrates were dried rapidly, and in the other they were dried slowly. It was observed that the water treatment, irrespective of the drying method, provides a surface, which on subsequent soaking in SBF forms a crack-free apatitic calcium phosphate coating. Based on these results, the authors suggest a protocol incorporating a water-soaking treatment after the alkali treatment and prior to the SBF soaking treatment to obtain crack-free coatings.

ChemInform Abstract: Autoassembling of the Quinuclidine Nucleus: One-Step Synthesis, Structure, and Properties of Dimethyl 4-Hydroxy-6,6,7,7-tetramethyl-. delta.2-dehydroquinuclidine-2,3-dicarboxylate.

ChemInform ◽  
2010 ◽  
Vol 27 (46) ◽  
pp. no-no
Author(s):  
R. G. KOSTYANOVSKY ◽  
Y. I. EL'NATANOV ◽  
I. I. CHERVIN ◽  
S. V. KONOVALIKHIN ◽  
A. B. ZOLOTOI ◽  
...  
Keyword(s):  
Structure And Properties ◽  
One Step

Synthesis of Cu(In0.75Al0.25)Se2 Thin Films from Binary Selenides Powder Compacted Targets by Sputtering and Selenization

2008 ◽  
Vol 135 ◽  
pp. 99-102 ◽  
Author(s):  
Badrul Munir ◽  
Rachmat Adhi Wibowo ◽  
Kyoo Ho Kim
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solar Cell ◽  
Secondary Phase ◽  
Structure And Properties ◽  
Structural And Optical Properties ◽  
Good Adhesion ◽  
Sputtering Deposition ◽  
One Step ◽  
Stage Process

Cu(In0.75Al0.25)Se2 thin films were prepared using both one-step sputtering and two-stage process involving sputtering and selenization. Structure and properties of the films were analyzed and compared between the methods. All films had good adhesion to the substrate and showed strong (112), (220)/(204) peaks while minor secondary phase CuxSe was observed in the films from selenization. This paper compares the visibility of one step sputtering process and selenization of sputtered binary selenides layers to produce Cu(InAl)Se2 thin films (CIAS) for solar cell absorber applications. One step sputtering deposition from binary selenides powder compacted targets can produces CIAS films with better structural and optical properties compared to films produced by selenization of sputtered precursors.

One-step formation of a double Pickering emulsion via modulation of the oil phase composition

2018 ◽  
Vol 9 (8) ◽  
pp. 4508-4517 ◽  
Author(s):  
Qijun Ruan ◽  
Lihua Zeng ◽  
Jiaoyan Ren ◽  
Xiaoquan Yang
Keyword(s):  
Phase Composition ◽  
Calcium Phosphate ◽  
Pickering Emulsion ◽  
Food Grade ◽  
Calcium Phosphate Particles ◽  
One Step

A facile one-step emulsification strategy was developed to generate a food-grade W/O/W double Pickering emulsion by using corn-peptide-functionalized calcium phosphate particles (CP-CaP) as emulsifier.

Influence of thermal treatment on structure and properties of RF-Magnetron calcium phosphate coatings deposited on Mg-based alloy

2020 ◽  
Author(s):  
Konstantin A. Prosolov ◽  
Margarita A. Khimich ◽  
Anna A. Bolat-ool ◽  
Olga A. Belyavskaya ◽  
Vladimir V. Lastovka ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Thermal Treatment ◽  
Structure And Properties ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings
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