How we determine conductivity of powder?

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SUMMARY

Determining the conductivity of inorganic polymer powders requires specialized equipment, specifically a four-point probe, to accurately measure conductivity in various forms. Conductivity is influenced by the density of the powder, as airborne samples, loose piles, and compressed pellets exhibit different conductivity levels. Dissolving the powder in water can increase ionic conductivity if the powder is ionic and dissociates, but this method does not measure the conductivity of the solid form directly.

PREREQUISITES
  • Understanding of conductivity measurement techniques
  • Familiarity with four-point probe equipment
  • Knowledge of ionic dissociation in solutions
  • Concept of density and its effect on conductivity
NEXT STEPS
  • Research the operation and applications of four-point probe conductivity measurement
  • Study the principles of ionic dissociation in aqueous solutions
  • Explore methods for measuring the density of powders
  • Investigate the effects of powder compaction on conductivity
USEFUL FOR

Chemists, materials scientists, and engineers involved in the analysis of inorganic materials and their electrical properties will benefit from this discussion.

violeta
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how we determine conductivity of powder??

hmm...i got a question..

i had three inorganic polymer (powder/solid form) and i want to mixed it according to various composition.

how can i determine the conductivity? do i need special equipment to read the conductivity or can i just dissolved the mixture of inorganic powder in water then read it?will it affected the conductivity?
 
Chemistry news on Phys.org
If the powder is ionic and dissociates in water the conductivity (ionic) will be increased over that of the solid powder.

To answer the question about the the conductivity of the powder itself, you need to know its density. An airborne sample of the powder will have a different conductivity than a loose pile which would be different than that of a compressed pellet. A special piece of equipment will be required to measure this regardless of the form. Perhaps a four point probe...
 

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