Hi all,
I'm trying to make conductive microstructure with silver nanocomposite, and aiming to use it as an electrochemical electrode. In detail, the nanocomposite consists of silver nanoparticle powder (D:80~100nm) and acrylated polyurethane which is a photocruable polymer.
So far, this composite showed 10^-2 Ohm-m resistivity when it was measured by 4 probe. However, according to SEM imaging, the filler particles were not connected to each other. I want to improve it by sintering
The problem is that matrix polymer is photocurable one and it cannot bear high temperature (at best, 150 Celsius, 15min). Thus, heat-induced sintering is not available. In this case, what is the best way for sintering of nanoparticles??
Dear Sanghhun,
welcome,
I second the colleague Xuhua. The most important thing to make the silver particles to be more close to each other and even touch. Then, you have to increase their density in the composite.
I doubt that the annealing can change the arrangement of the silver particles in the host polymer. Heating can mot move the particles to touch each other.
It is very interesting to report about the solution.
Best wishes
Dear Sanghyun
Since you mentioned that the silver nanoparticles are not connected, can you increase the silver nanoparticles quantity? Secondly whether could you use a laser which emission wavelength can be absorbed by your photocurable monomer to achieve effective polymerization or use high power flash lamp?
Dear Sanghhun,
welcome,
I second the colleague Xuhua. The most important thing to make the silver particles to be more close to each other and even touch. Then, you have to increase their density in the composite.
I doubt that the annealing can change the arrangement of the silver particles in the host polymer. Heating can mot move the particles to touch each other.
It is very interesting to report about the solution.
Best wishes
Have you tried pressure spraying and focussing by changing the shape of nozzle
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