Percolation behaviour of polypropylene glycol filled with multiwalled carbon nanotubes and Laponite

Liquid crystal suspensions of carbon nanotubes assisted by organically modified Laponite nanoplatelets

“…In particular, it was shown that CNTs can be easily deroped in an aqueous solution by addition of ZrP [24] or Laponite [25] nanoplatelets. The stabilizing effect of IP was also clearly observed for polymer suspensions of CNTs [24,[26][27][28][29]. In many cases, combination of CNTs and IP resulted in a synergistic effect on mechanical, electrical, flame retardation and other properties of polymers.…”

“…But tentatively we believe that this is primarily due to water absorbed by Laponite, which is mainly trapped between the platelets in the stacks [43]. This water can not be effectively removed by a deep freezing in vacuum, used in our research as a drying method [29]. The matter is the conventional high temperature drying can not be applied to LapO powders, because of risk of structural changes.…”

“…The faces of disks have a constant negative charge, while the surface charge of their edges is pHdependent and positive in acidic medium [32]. As described elsewhere [29], the platelets of original Laponite were modified by ion-exchange reactions with the surfactant cetyl-trimethylammonium-bromide (CTAB, C 16 H 33 -N(CH 3 ) 3 Br, Fluka, Germany) with 99.5% purity. The resultant material will be further called the organomodified Laponite (LapO).…”

Electrical conductivity behavior of epoxy matrix nanocomposites with simultaneous dispersion of carbon nanotubes and clays

“…The interactions between these nanoparticles are synergic on increasing the electrical conductivity , mechanical , and flame retardance properties . According to the literature, simultaneously adding nanoparticles of high diameter/thickness ratio (platelet‐like nanostructures) with conductive nanofillers into polymeric matrices can generate larger confinement effects over the conductive phase, acting as a driving force for reducing the percolation threshold . As very well pointed out in the literature, this was not only seen for CNT/clay dispersions, but also for CNT/CaCO 3 , CNT/talc and CNT/wollastonite (acicular particle shape) dispersions in polypropylene, polyoximethylene, and polyamide .…”

Transparent organic–inorganic nanocomposites membranes based on carboxymethylcellulose and synthetic clay

“…In this way, organic-inorganic nanocomposites are becoming an important issue, mainly the nanocomposites combined with inorganic fillers containing at least one dimension in nanometric scale, such as clay minerals (Gabr et al, 2013;Lysenkov et al, 2012). These organic-inorganic nanocomposites, when composed by biopolymers, should be used in our daily life to replace synthetic polymers in diverse fields (industry, food, composites) (Romero et al, 2013).…”