I want to test NBT particles on Zetasizer. In this order I already tried a water solvent but it is not working properly. Has anybody worked with NBT and know which solvent will be the best?
Hi Kasia,
You may think from the other side of story by trying dispersants like PMAA instead of using other non-aqueous solvents. The abstract below may serve as a good spring-borad for further literature search.
Hope this helps.
Best,
Yang
The original link: etigo.nagaokaut.ac.jp/people/staff/nky15/icc3/abstractpdf/01226.pdf
A Study of the Dispersant Effect Toward Lead-free Piezoelectric
Ceramic Powder Bismuth Sodium Titanate
Wen-Pin, Weng，Po-Chin, Chen，Hung-Yi, Yen，Fu-Yuan, Siao and Chin-Chieh, Chang
Department of Chemical and Materials Engineering，Lunghwa University of Science and Technology, Taiwan
In this study, oxide solid-phase reaction was used to prepare a Bi0.5Na0.5TiO3 (BNT) based lead-free piezoelectric ceramic material, where different dispersants were added (PMAA9500, PMAA4000~6000, Mw2000, Mw24000) to discuss dispersion performance. The comparison was based by a zeta potential analyzer to determine if the dispersants had a significant dispersing effect. Furthermore, a laser particle size analyzer was used to study the particle size of the dispersants. Results from the zeta potential analyzer showed that dispersant PMAA9500 gave the best dispersion. In addition, the laser particle size analyzer showed that the particles of the dispersants were smallest when 3wt% PMAA9500 was added, showing that is was the most suitable to produce ceramic powder. From SEM observation, the particles of PMAA9500 at 3wt% did not occur with agglomeration, and the particles were evenly distributed. The adding of 3wt% PMAA9500 dispersant showed to benefit in successfully producing lead-free piezoelectric ceramic powder Bi0.5Na0.5TiO3 (BNT) ceramic.
Keywords: Lead-free piezoelectric ceramics, dispersant, Bi0.5Na0.5TiO3, agglomeration, surface potential, particle size analysis
???
What is it for?
It does not make any sense to change the system to do a characterization. Always characterize the system and maybe its dependence on variables.
If you want to determine size distribution, you should do it for the system under question. Let say you end up with a dispersion - characterize this. If it is a powder use let say TEM. If you want to use it for a special application investigate the relevant system with methods that suit these.
Zeta potential of a powder does not exist. Zeta potential of a dispersion will always depend on actual composition.
Thank you for your responses.
Yes, I wanted to check the particle size in a different way than by TEM (for example, using a Zetasizer)
Particle size distribution will always depend on the media and the way you disperse it.
For powder you may use also laser light scattering and/or BET. Maybe under a light microscope you will observe that your product is highly aggregated/agglomerated. By its nature I would expect good wetting with water. One may suspect a highly aggregated product.
- Badges
- Science topic
- Similar topics
- Chemistry
- Nanotechnology