How Can You Measure Carbon Pellet Conductivity Without PVA Interference?

AI Thread Summary
Measuring the conductivity of carbon pellets made with polyvinyl alcohol (PVA) as a binder poses challenges due to PVA's own conductivity. Heating the pellets to 300 degrees Celsius is one proposed method to evaporate the PVA, but concerns about potential reactions and carbon dioxide formation at this temperature exist. It is suggested that PVA will not react with carbon at 300 degrees, and if PVA's presence is limited to less than 2%, its impact on overall conductivity will be minimal. Alternative methods for measuring conductivity without PVA interference are sought. Effective approaches to this issue remain a topic of discussion.
copper-head
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Hey there.
I am making Carbon pellets using polyvinyl alcohol as a binder to help shape the pellets. I would like to measure the pellet's conductivity without being hindered or influence by the conductivity of the PVA. One way to do it is to heat the pellets to 300 degrees and evaporate the PVA that way, however I am not certain about the reaction between Carbon and PVA at this temperature, also about the formation of Carbon Dioxide which would occur at this temperature as well.
Does anyone have a suggestion of how to approach this subject?
 
If anyone is interested, here's a possible answer: PVA will not react with Carbon at 300 degree. The resistivity of PVA will play a minimal role in over all conductivity of the pellet if its presence is limited to <2%.
 
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