If I prepare, for example, PDMS nanocomposite with 40wt% or 50wt% MWCNT, what will happen to the electrical conductivity values of this nanocomposite?
40 to 50 wt% of CNT is way too high. Above percolation limit, the increase in electrical conductivity is only marginal. In PDMS and other elastomers, electrical percolation can be achieved at well below 10 wt% (provided the dispersion and distribution of CNT is good). This paper is good starting point on the topic of electrical percolation.. doi.org/10.1016/j.compscitech.2008.06.018
Ahmed Y. Yassin and Sridhar Vadahanambi thanks for your answers, but I know that 40% is too much for MWCNT. however I need conductivity values around 300 S/m for the project. If the 40% is not too much for producing PDMS composites by soft litography, would that conductivity level is possible?
I found a conference paper which gave sheet resistance of MWCNT/PDMS nanocomposite with broad range of wt% (0 wt% to 30 wt%).
Conference Paper Multi-Walled Carbon Nanotube Filled Conductive Elastomers: M...
Hi,
I believe that there is a percolation threshold for your conductive filler which maintains a range. Beyond that filler threshold, agglomeration will occur and conductivity will decrease.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Composites
- Nanocomposites