scholarly journals Dry mechanosynthesis and characterization of carbonate apatite based on Indonesian natural sources

2021 ◽  
Author(s):  
Herlina Damayanti ◽  
Kristanto Wahyudi ◽  
Karlina Noordiningsih ◽  
Ayu Ratnasari ◽  
Devi Rianti
Keyword(s):  
Carbonate Apatite ◽  
Natural Sources

Characterization of humins from different natural sources and the effect on microbial reductive dechlorination of pentachlorophenol

Chemosphere ◽  
2015 ◽  
Vol 131 ◽  
pp. 110-116 ◽  
Author(s):  
Chunfang Zhang ◽  
Dongdong Zhang ◽  
Zhixing Xiao ◽  
Zhiling Li ◽  
Daisuke Suzuki ◽  
...  
Keyword(s):  
Reductive Dechlorination ◽  
Natural Sources ◽  
Microbial Reductive Dechlorination

Characterization of calcium oxide catalysts from natural sources and their application in the transesterification of sunflower oil

2014 ◽  
Vol 151 ◽  
pp. 207-213 ◽  
Author(s):  
Leandro Marques Correia ◽  
Rosana Maria Alves Saboya ◽  
Natália de Sousa Campelo ◽  
Juan Antonio Cecilia ◽  
Enrique Rodríguez-Castellón ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Sunflower Oil ◽  
Oxide Catalysts ◽  
Natural Sources

Isolation and Characterization of Toxic Cyanobacteria from Different Natural Sources

2017 ◽  
Vol 53 (7) ◽  
pp. 754-760 ◽  
Author(s):  
K. Bolatkhan ◽  
N. R. Akmukhanova ◽  
B. K. Zayadan ◽  
A. K. Sadvakasova ◽  
M. A. Sinetova ◽  
...  
Keyword(s):  
Natural Sources ◽  
Isolation And Characterization ◽  
Toxic Cyanobacteria

Biocompatible Hydroxyapatite Derive from Selayang Fish Bone via Mechanochemical Treatment

2020 ◽  
Vol 307 ◽  
pp. 339-344
Author(s):  
Ishak Qayyum Afiqah ◽  
Nik Aziz Nik Ali ◽  
Abd Majid Siti Nurhaziqah ◽  
Hasiah Salleh
Keyword(s):  
Room Temperature ◽  
Fish Bone ◽  
X Ray Diffraction ◽  
Synthetic Process ◽  
Calcination Process ◽  
Natural Sources ◽  
X Ray ◽  
Fish Bones ◽  
Phosphate Mineral

Age of monstrous amount of underutilized marine processing byproducts has been perceived as waste and many effort were given to utilize these materials in various application. With an incredible number of study on these byproducts, some compound were identified and apply for human utilization. Hydroxyapatite (HAp) is the main inorganic calcium phosphate mineral with excellent osteoconductivity, good bioactivity and biocompatibility. The production of HAp powder from synthetic process involves many chemicals with complicated procedures. Due to this matter, the raw HAp powder was extracted from natural sources selayang fish bones. Extortion process started with boiling fish bones to eliminate adherent fish meats. After calcination process fish bone were dried in room temperature before crushed by using grinder to obtain the powder. Next, the powder undergo calcination process at 900°C for 5 hours. The characterization of raw HAp was done via X-ray Diffraction, Fourier Transform Infrared Spectometer, Scanning Electron Microscopy, and Thermogravimetric analysis.

Characterization of Biomimetic Mineral Coated 3D PLGA Scaffolds

2006 ◽  
Author(s):  
A. Champa Jayasuriya ◽  
Chiragkumar Shah ◽  
Vijay Goel ◽  
Nabil A. Ebraheim
Keyword(s):  
Cell Culture ◽  
Culture Media ◽  
Biological Molecules ◽  
Polymer Surfaces ◽  
Human Blood Plasma ◽  
Carbonate Apatite ◽  
X Ray Diffraction ◽  
Cell Culture Media ◽  
Salt Leaching

The bone-like carbonate apatite (BLCA) coatings can be coated biomimetically in the polymer surfaces by soaking in the simulated body fluid (SBF). This SBF contains similar ionic constituents to human blood plasma. Micro-porous 3D poly(lactic-co-glycolic acid) PLGA scaffolds were fabricated by the solvent casting/salt leaching technique using chloroform to dissolve the polymer. We accelerated the deposition of mineral on scaffolds for 1-2 days, modifying the mineralization process using surface treatments and 5x SBF. These scaffolds were analyzed by Scanning Electron Microscopy (SEM), Fourier Transform Infra-Red (FTIR) and X-ray Diffraction (XRD). The scaffolds coated with BLCA layer were placed in the 24 well plates containing 2 ml of media, such as Tris Buffered Saline-pH 7.4, cell culture media containing αMEM supplemented with 10% FBS, and 1% penicillin-streptomycin and incubated at 37°C for 21 days. The BLCA layer on surfaces of scaffold was stable even after 21 days immersed in Tris Buffered Saline and cell culture media. This study suggests that BLCA were stable for at least 3 weeks in the both media, and therefore, mineral has a potential to use as a carrier for biological molecules for localized release applications as well as bone tissue engineering applications.

Characterization of Zirconia for Ceramic Dental Implant Coated with Carbonate Apatite

2019 ◽  
Vol 829 ◽  
pp. 138-144
Author(s):  
Fauziah Erfin ◽  
Rasmi Rikmasari ◽  
Lisda Damayanti ◽  
Andrie Harmaji ◽  
Arief Cahyanto
Keyword(s):  
Dental Implant ◽  
Hydraulic Press ◽  
Carbonate Apatite ◽  
Pellet Size ◽  
Heat Treated ◽  
Temperature Variable ◽  
High Production ◽  
Pre Treatment ◽  
High Production Cost

Zirconia-based dental implant in Indonesia is rarely used, especially due to low demand. High production cost makes the price of each zirconia dental implant piece become expensive. The fabrication process of the dental implant using 3 mol% Yttria-stabilized Zirconia (3YSZ) as a starting powder, or being synthesized using ZrCl3 and YCl4 precursor were costly and complicated. The aim of this study is to investigate morphology and phase analysis in the ceramic dental implant which coated with carbonate apatite (CO3Ap). The industrial 3YSZ powder was compacted using a manual hydraulic press and sintered at 1500°C approximately to 11 mm pellet size. Specimens were pre-treated using 9% hydrofluoric acid (HF) before coated by CO3Ap, while others without treatment as a control. Then, the specimens were dipped into CO3Ap suspension and heat treated with temperature variable of 300°C or 500°C. The fabrication of specimen using manual hydraulic press creates monoclinic phase more than expected, while SEM discovered that the particle size of the specimen was 130-500nm. In conclusion, the effective method to coat the ceramic dental implant with CO3Ap was using 9% HF as a pre-treatment and calcinate in 300°C as confirmed in XRD and EDS.

Characterization of Type B Carbonate Apatite Sintered Bodies

2011 ◽  
Vol 1301 ◽  
Author(s):  
N. Watanobe ◽  
T. Yoshioka ◽  
T. Ikoma ◽  
T. Kuwayama ◽  
T. Higaki ◽  
...  
Keyword(s):  
Dissolution Kinetics ◽  
Carbonate Apatite ◽  
Artificial Bone ◽  
Type B ◽  
Desorption Process ◽  
Different Temperatures ◽  
Acidic Conditions ◽  
Kinetics Of ◽  
Potential Use

ABSTRACTThe dissolution kinetics of type B carbonate apatite (CAp) disks sintered at different temperatures were investigated under acidic conditions similar to an osteoclastic desorption process in bone remodeling. The type B CAp disks, which were uniaxially pressed at 98MPa and sintered at temperatures of 600 to 700 ºC, showed single crystalline phase and a high relative density of 60-62 % compared to the stoichiometric density of 3.16g/cm3 of hydroxyapatite (HAp). The dissolution rate of type B CAp disks sintered at 650 ºC was 3.5 times faster than that of HAp disks at 650 ºC. These results indicate that the Type B CAp sintered disks show potential use as a biodegradable material for artificial bone.

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