Effect of multiwall nanotube on the properties of polypropylenes

Masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: Assessment of rheological and mechanical properties

“…There are reports in the literature which examine the dilution of MWNT containing masterbatches [30][31][32][33][34][35][36][37][38][39][40][41]. However, literature survey reveals that, reports on the detailed investigations on the properties of MWNT/PP masterbatches are limited [42,43] when compared to the studies of nanocomposites prepared by direct incorporation of MWNT in PP [16][17][18][19][20][21][22]27] and this prompted us to take up this work. Moreover, distribution of masterbatch and subsequent dispersion of nanotubes in the polymer matrix after processing needs to be ascertained.…”

Comparative analysis of two fuzzy rule base optimization methods

“…The experimental results [11] were divided into two separate data sets, one for fuzzy system identification (training) and one for system validation (testing) purposes. The training data set contained the results of 31 experimental setups.…”

Properties characterisation of polycarbonate and multi‐walled carbon nanotubes composites prepared by solution technique

“…The melt mixing using a micro single screw extruder showed that a single processing cycle was insufficient to obtain homogeneous composites, and hence, no benefit in reinforcing characteristics was observed . With intense melt mixing, composite mechanical properties within the range of percolation threshold were reported to be unchanged, enhanced, or reduced . The reinforcing behaviours are understood to be a result from the breakup of CNTs agglomerates, while the decline in the mechanical properties might be due to decreased homogeneity of the composites.…”

“…While pretreatment of MWNTs with strong acids was commonly carried out to introduce functional groups onto the surface of the MWNTs, enhancing their interaction with polymer matrices and hence improving their dispersion, such processes changed its molecular structure and hindered electron transportation compared to unmodified MWNTs . While many research groups disclosed that beyond the percolation concentration, the electrical properties either improved slightly or became constant, some came across surprising findings . Ádámné and Belina concluded that inhomogeneity of high content of MWNTs resulted in an increase in the composite's specific resistance.…”

“…While many research groups disclosed that beyond the percolation concentration, the electrical properties either improved slightly or became constant, some came across surprising findings . Ádámné and Belina concluded that inhomogeneity of high content of MWNTs resulted in an increase in the composite's specific resistance. Leer et al found an even more unpredictable outcome in that a well‐dispersed MWNTs/PC composite possessed high volume resistivity.…”