Increasing the thermoelectric power factor of polymer composites using a semiconducting stabilizer for carbon nanotubes

Poly(vinyl acetate) (PVAc) copolymer latex-based composites were prepared with multi-walled carbon nanotubes (MWCNT), stabilized with sodium deoxycholate (DOC) or meso-tetra(4-carboxyphenyl) porphine (TCPP). SEM images show that a segregated MWCNT network developed during drying, which resulted in relatively low percolation thresholds (1.62 and 2.17 wt.% MWCNT for DOC and TCPP, respectively). The electrical conductivity (σ) of TCPP-stabilized...