A new direct preparation of electroconductive polyimide/carbon black composite via polycondensation of nylon-salt-type monomer/carbon black mixture

Characteristics of polyimide-based nanocomposites containing plasma-modified multi-walled carbon nanotubes

“…It's clear that mCNT have better dispersion than CNT in the polyimide matrix. The mCNT thereby has a more pronounced effect on the percolation threshold than the CNT [27,[30][31][32]. In the case of the original CNT, the CNT clusters are difficult to disperse in solution by means of mechanical stirring.…”

The role of conductive dopants in polymer cholesteric liquid crystals

“…More spherical-like and compact aggregates (or isolated CB particle) have "lower" structure with less pores, voids (less absorption of DBP oil) vs. "high" structure that are elongated, branched and chained aggregates which are more porous and have large effective volume, and, consequently, high DBP value. A large body of published work has been devoted to different polymer/carbon black composites [1,34,40,[48][49][50][51][52]. Different loading levels of CB in polymers have been reported to exhibit percolation thresholds from <1 vol.% to tens of vol.% loads [30].…”

“…Different loading levels of CB in polymers have been reported to exhibit percolation thresholds from <1 vol.% to tens of vol.% loads [30]. As stated above, PT strongly depends on the nature of the polymer matrix (e.g., the higher the polymer polarity or surface energy, the higher the PT [34]), CB type (particle size, surface area, oxidation state [49,51]), CB structure (the "lower" the structure, the higher the PT [30,45]), the adhesion between CB and polymer [53], the method of the preparation of the composite [48], mixing, and potential addition of salts (which lowers the potential barriers between CB particles) [36,44,47]. Depending on the surface treatment of CB particles, different functional and volatile groups (phenols, carboxylic acids) [49,51,54] can exist on the CB surface.…”

A Study on Electrical and Thermal Properties of Polyimide/MWNT Nanocomposites

“…CNTs also have high stiffness and tensile strength, which make them preferable for use in composites that require those mechanical properties. 4 MWNT have been used in composite materials to improve electrical properties while reinforcing the mechanical and thermal performance of the composites. [5][6][7][8] Also, many efforts have been made to exploit the electrical, mechanical and thermal properties of polymer-CNTs composites by controlling the orientation of MWNT and polymer molecular chains.…”

“…4 Park et al 12 prepared single-walled carbon nanotubes (SWNT)/polyimide composites by in situ polymerization, in which SWNT were dispersed homogeneously in the polyimide matrix. Qu et al 13 reported on the homogeneous dispersion of SWNT and MWNT into polyimide matrices for high quality nanocomposites.…”