Electrical properties of composite films using carbon nanotube/polyelectrolyte self-assembled particles

Abstract

fMCNT/polyelectrolyte coated PS particles were synthesized by LbL self-assembly to enhance dispersity of CNTs in CNT/PS composite films. The amount of fMCNTs on particles was efficiently controlled by adjusting the number of PDDA/fMCNT multilayers. The electrical properties of fMCNT/PS composite layer on the PMMA using fMCNT/ polyelectrolyte self-assembled particles were investigated. The fMCNT/PS composite layer on the PMMA showed the high electric conductivity because fMCNTs were well dispersed in composite films. Also, EMI SE over frequency rage of 50 MHz - 1.5 GHz was weakly measured around 1-5 dB depending on the different number of PDDA/fMCNT multilayers. Though the EMI SE of composite films was observed, the EMI SE was too low to be applied for practical applications. The electrical conductivity of fMCNT/PS composite layer on PMMA continuously increased with the stepwise growth of PDDA/fMCNT multilayers. It was suggested that electrical properties of composite films were efficiently controlled by using fMCNT/polyelectrolyte selfassembled particles.