Excellent tensile ductility in highly oriented injection-molded bars of polypropylene/carbon nanotubes composites

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

“…The reported results for these nanocomposites have been mixed, especially for mechanical properties, where Bhattacharyya et al [16] reported no significant improvement in mechanical properties, and others have shown moderate improvements in tensile strength, but decreased toughness [18]. Most recently, Zhao and co-workers [22] reported the substantial increase of tensile modulus (Young's modulus) and strength by adding small amount of MWNTs to PP matrix. However, the addition of CNTs can cause significant change of viscoelasticity for the 0266 nanocomposites.…”

“…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.…”

Preparation and properties of poly (p-phenylene sulfide)/multiwall carbon nanotube composites obtained by melt compounding

“…These forces give rise to the formation of aggregates, which in turn, make dispersion of CNTs in polymer difficult, resulting in rather poor mechanical and electro-conductive properties. Therefore the key points to fully explore CNTs reinforcing potential or enhancing the properties of a polymer matrix are a uniform dispersion, exfoliation, and orientation [16,17] of CNTs. Meanwhile improving the interaction between CNTs and a polymer matrix is also important.…”

Structural, mechanical and thermal studies of double‐molded isotactic polypropylene nanocomposites with multiwalled carbon nanotubes

“…[13][14][15][16] Recently, CNTs are also used as special nanofiller to prepare iPP/CNTs composites, providing a new avenue of fabricating high performance iPP engineering plastics. [17][18][19][20] The structure of CNTs can be single walled (SWCNTs) or multiwalled (MWCNTs) of which the latter is simply composed of concentric single-walled nanotubes having more rigid structure than the former one. The diameter of single-walled carbon nanotubes ranges from one up to a few nanometers and their length is a few micrometer.…”