I'm at the end of my preliminary experiment for the synthesis of Hap, but I noticed traces of black ink in my dried hydroxyapatite, I tried to search at which temperature the component in black ink decomposes, but I'm still quite unsure.
Does these traces of "black ink" decomposes when I further calcinate my dried HAp to 900 celsius for 2 hours?
Best Regards
-Flynne
It is not possible to determine if the traces of "black ink" in your dried hydroxyapatite sample will decompose during calcination at 900 Celsius for 2 hours without more information about the composition of the black ink.
Dear Ma. Flynne Dagalea,
Do you have an idea about the sources of “black” traces in your sample?
Traditionally, the temperature of degradation of inks is much lower, function of the nature of the dies, carriers, additives, etc. (you could obtain information via the internet).
We don’t know the details of your experiment, maybe the black traces are due to some residual mineral oxides or due to other sources of impurification, that will are degraded at high temperature...
Good look in your R&D project and best regards,
Marius
PS: For info and eventual help:
Effect of the Calcination Temperature on the Properties of Hydroxyapatite from Black Tilapia Fish BoneSiti Khadijah Dermawan et al 2022 J. Phys.: Conf. Ser. 2169 012034
DOI 10.1088/1742-6596/2169/1/012034
For help an info from RG, see the TGA of "black" ink :
Article Effect of photonic flash annealing with subsequent compressi...
Thank you so much Marius Murariu. I will look into this literature.
Marius Murariu , I just retrieve my HAp FTIR spectra and as far as I can analyze it, I think there are no longer traces of black "ink" (If there is really one in the prior sample).
May I know your opinion of my FTIR results?
Dear Flynne,
Not to delay with my answer, please consider that you know all experimental details that can be very useful in the interpretation of the results, therefore I would like to avoid some mistakes from my part.
Because in the literature are many works regarding the FTIR of hydroxyapatite, I believe that will be a pleasure for you to discover the similarities and differences, compared to your results. Good luck in your R&D project and best regards,
Marius
For eventual help/interest: https://www.researchgate.net/publication/259973423_Synthesis_and_characterization_of_nano-hydroxyapatite_n-HAP_using_the_wet_chemical_technique
Spectral characterization of hydroxyapatite extracted from Black Sumatra and Fighting cock bone samples: A comparative analysis https://www.sciencedirect.com/science/article/pii/S1319562X20305805
Spectral analysis of allogeneic hydroxyapatite powders
https://iopscience.iop.org/article/10.1088/1742-6596/784/1/012060/pdf
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