Highly conductive polystyrene/carbon nanotube/PEDOT:PSS nanocomposite with segregated structure for electromagnetic interference shielding

Caffeic-Acid-Functionalized MWCNTs and PEDOT:PSS Formed Composite Flexible Films with “Reinforced Concrete” Structure for Electrical Heating and EMI Shielding

“…Meanwhile, we conducted Raman tests to investigate the interaction between PEDOT:PSS and the C-MWCNT (Figure c). The characteristic peak positions of PEDOT:PSS were observed at 1250 cm –1 (aromatic CC symmetric stretching vibration), 1362 cm –1 (C–C intraring stretching vibration), and 1421 cm –1 (C–C symmetric stretching vibration) . With the addition of PEDOT:PSS, the D peak of the CNTs blue-shifted from 1344 to 1356 cm –1 , and the G peak shifted from 1575 to 1581 cm –1 .…”

“…The characteristic peak positions of PEDOT:PSS were observed at 1250 cm −1 (aromatic C�C symmetric stretching vibration), 1362 cm −1 (C−C intraring stretching vibration), and 1421 cm −1 (C−C symmetric stretching vibration). 43 With the addition of PEDOT:PSS, the D peak of the CNTs blue-shifted from 1344 to 1356 cm −1 , and the G peak shifted from 1575 to 1581 cm −1 . 44 As for PEDOT:PSS, its strongest peak was blueshifted from 1421 to 1425 cm −1 .…”

Recent Progress in Poly (3,4‐Ethylene Dioxythiophene): Polystyrene Sulfonate Based Composite Materials for Electromagnetic Interference Shielding

“…Keshmiri et al. [ 156 ] fabricated highly conductive PS/CNT/PEDOT:PSS nanocomposite via dispersing polystyrene beads (PS), CNT, and PEDOT:PSS in deionized water, followed by vacuum filtration, solvent treatment, and hot press molding for EMI shielding in X‐band. The PS/CNT/PEDOT:PSS (100:2:4 w/w/w) exhibited high EMI SE of 33.4 dB and electrical conductivity of 2.352 S cm −1 with thickness of 0.6 mm.…”

“…Here, PEDOT: PSS was dispersed in dimethyl sulfoxide (DMSO) to improve their conductivity because DMSO can interact with sulfonic groups of PSS polymer and separate it by weakening the coulombic attraction between PEDOT and PSS. [67] Keshmiri et al [156] fabricated highly conductive PS/CNT/PEDOT:PSS nanocomposite via dispersing polystyrene beads (PS), CNT, and PEDOT:PSS in deionized water, followed by vacuum filtration, solvent treatment, and hot press molding for EMI shielding in X-band. The PS/CNT/PEDOT:PSS (100:2:4 w/w/w) exhibited high EMI SE of 33.4 dB and electrical conductivity of 2.352 S cm −1 with thickness of 0.6 mm.…”

An artificially re-structured PEDOT:PSS/konjac glucomannan sponge toward high-performance electromagnetic interference shielding from gigahertz to terahertz bands

“…However, to the best of our knowledge, effective EMI-enhancing structures are hardly achieved with standalone PEDOT:PSS. Recently, PEDOT:PSS-based EMI shielding materials have mainly been designed as films, 20–22 which contribute nothing to EMI shielding in a structural way, or added to complicated composites as a conductive filler, 23–28 which does not dominate the EMI shielding. Konjac glucomannan (KGM) is widely known as a water-soluble polysaccharide with abundant functional groups, 29,30 possessing resourceful and renewable networks leading to a foam structure, 31,32 which is one of the common structures of flexible EMI shielding materials.…”