Melt mixing of polycarbonate/multi-wall carbon nanotube composites

Control of multiwall carbon nanotubes dispersion in polyamide6 matrix: An assessment through electrical conductivity

“…It is well established that 'network-like structure' [11,12] of CNT is predominantly responsible for electrical percolation in insulating polymer matrices. However, the electrical percolation threshold in polymer/CNT composites is found to be much higher in case of thermoplastic matrices [13,14] as compared to theoretically predicted percolation threshold considering L/D of CNT as one of the critical parameters which is otherwise found to be close to the predicted values in thermoset (epoxy, polyimide etc.) filled system [7][8][9].…”

Conductivity of microfibrillar polymer-polymer composites with CNT-loaded microfibrils or compatibilizer: A comparative study

“…An idea of how the values of volume resistivity from samples prepared in this study are related to the typical percolation thresholds of similar systems could be got from Figure 7. Samples 1-6 refer to published data [12,43,49,[52][53][54][55], whereas sample 6 represents the compatibilizer material used in this study, and samples 7-10 are from the present study. In the majority of cases the conductive filler is dispersed in the polymer bulk ( Figure 7 demonstrate the extremely strong dependence of the volume resistivity on the concentration of the filler -a change of CNT concentration by 1 vol% can result in a decrease of the resistivity by up to 10 orders of magnitude.…”

Microinjection Molding of Enhanced Thermoplastics

“…The melt processing method is commonly used for thermoplastic polymers. The advantages of this technique are the speed and simplicity, and essentially, its compatibility with standard industrial techniques Potschke et al, 2003).…”

“…However, the processing conditions should be optimized for each thermoplastic and desired composite, because CNTs can affect melt properties, of the pure thermoplastic, such as viscosity (Potschke et al, 2003). As it was mentioned earlier, Fonseca et al (2011) has prepared ultra-high molecular weight polyethylene (UHMWPE) reinforced with CNTs through a variation of the melt mechanical processing technique.…”