Influence of multi-walled carbon nanotubes on the cure behavior of epoxy-imidazole system

Electrically conductive bacterial cellulose composite membranes produced by the incorporation of graphite nanoplatelets in pristine bacterial cellulose membranes

“…The purity and the specific surface area of the MWCNTs are greater than 95% and 40 m 2 /g, respectively. Micrographs of the rod-shaped MWCNTs can be seen in our previous works [13]. During purification, MWCNTs were refluxed with concentrated nitric acid to remove catalyst particles, which may also increase the amount of oxygen chemisorbed on the surface of MWCNTs and, therefore, cause more oxygenous functional groups formed on the surface of MWCNTs.…”

Effects of graphene oxides on the cure behaviors of a tetrafunctional epoxy resin

“…Differential scanning calorimetry (DSC) may be considered as one of the most interesting techniques for kinetic analysis of cure reactions of thermosetting systems [13][14][15]. Numerous studies on cure kinetics of epoxy in presence of carbon-based nanofillers have been investigated [16][17][18][19][20][21][22][23][24][25]. Recently, Allaoui and El Bounia [16] had reviewed the influence of CNTs on the cure kinetics of epoxy resin.…”

“…Abdalla et al [19] investigated the effect of carboxyl and fluorine surface modification of multiwalled carbon nanotubes (MWCNTs) on the cure behavior of epoxy resins with the modified CNTs, and reported that the activation energy and rate constant were not affected by the fluorine modification whereas the resins with carboxylated MWCNTs exhibited an increase in the activation energy and a lower rate constant for the cure reaction. Zhou et al [20][21][22] studied the effects of MWCNTs and carboxylic functionalization of MWCNTs on the cure reaction of epoxy. They reported that MWCNTs had an accelerating effect in the initial curing stage, whereas in the later curing stage, MWCNTs prevented from the occurrence of vitrification [20].…”

Effects of silica-coated carbon nanotubes on the curing behavior and properties of epoxy composites

“…The improved interfacial interactions between the functionalized MWCNTs and epoxy matrix also result in enhancements of glassy and rubbery moduli for such composites [27] The glass transition temperature (T g ) is closely linked to the thermomechanical stability and is thus a critical property that dictates the potential application of a given epoxy resin [31]. The tan δ, equal to the ratio of the loss modulus to the storage modulus, as a function of the temperature, for neat epoxy and composites with 0.75 wt% of MWCNTs is presented in Fig.…”

“…Characterization of the curing kinetics of the CNT-filled epoxy resin is one of the prerequisites for designing and optimizing the process parameters. Studies have been reported on the cure behaviors of CNT/epoxy [28][29][30][31][32] and surface treated-CNT/epoxy systems [33][34][35][36][37][38]. However, fewer reports exist regarding the effect of silica-coated CNTs on the curing behavior of epoxy composite resin.…”