How Can You Measure Carbon Pellet Conductivity Without PVA Interference?

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SUMMARY

This discussion focuses on measuring the conductivity of carbon pellets without interference from polyvinyl alcohol (PVA), which is used as a binder. Heating the pellets to 300 degrees Celsius is proposed as a method to evaporate PVA, but concerns about potential reactions and the formation of carbon dioxide are raised. A participant confirms that PVA does not react with carbon at this temperature and asserts that if PVA's presence is limited to less than 2%, its impact on overall conductivity is negligible.

PREREQUISITES
  • Understanding of carbon pellet production techniques
  • Knowledge of polyvinyl alcohol (PVA) properties
  • Familiarity with thermal decomposition processes
  • Basic principles of electrical conductivity measurement
NEXT STEPS
  • Research the thermal properties of polyvinyl alcohol (PVA) at high temperatures
  • Investigate methods for measuring electrical conductivity in composite materials
  • Explore the effects of binder materials on the conductivity of carbon-based composites
  • Learn about the thermal decomposition of carbon compounds and their byproducts
USEFUL FOR

Materials scientists, chemical engineers, and researchers involved in the production and testing of carbon-based materials.

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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