How we determine conductivity of powder?

[violeta]

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?

 

[chemisttree]

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...

 

[ravenprp]

To determine the conductivity of powder, we use a technique called the four-point probe method. This involves applying an electrical current to the powder and measuring the voltage across the sample at four different points. The conductivity can then be calculated using Ohm's law.

In your case, with a mixture of inorganic powders, you will need to first dissolve the mixture in water to create a conductive solution. Then, you can use the four-point probe method to measure the conductivity.

It is important to note that the type and amount of inorganic powders in the mixture will affect the conductivity. Therefore, it is necessary to have a standardized method and equipment to ensure accurate and consistent results. Simply dissolving the mixture in water may not give an accurate reading as the conductivity of water itself can vary.

In conclusion, to determine the conductivity of powder, the four-point probe method is the most reliable and accurate technique. Specialized equipment is needed to measure the conductivity of the powder mixture, and simply dissolving it in water may not give accurate results.