Graphene oxide and graphene hybrid nanocomposites based on compatibilized PP/PTW/EVA: effect of nanofiller and compatibilizer on the modeling of viscoplastic behavior

Compatibilization of Immiscible PA6/PLA Nanocomposites Using Graphene Oxide and PTW Compatibilizer for High Thermal and Mechanical Applications

“…In Figure 5b, the surface of the sample containing the PTW compatibilizer is slightly rougher than the surface of the sample without it, which may indicate greater compatibility of PA6 and PLA. By adding GO nanofiller to PA6/PLA/PTW sample and increasing its amount, the fracture surface of the samples has become rougher, and the mean diameter of PLA disperse phase reduced, so in the figure 5, that for samples (80/20), (80/20/5) and containing 0.1, 0.3, 0.5, 0.7 and 1 phr GO, the mean diameter of PLA disperse phase became 43.9, 36.1, 32.5, 21.6, 16.6, 13.4 and 11.8 μm, respectively, which indicates the creation of an interface and interaction between the components of nanocomposites, which is consistent with the results of some studies [57]. It seems that the interface is formed by the formation of hydrogen bonds between the hydroxyl and carboxyl functional groups in GO with the carboxyl functional groups of PLA and the amide functional groups of PA6.…”

“…This increase is due to the formation of a GO physical network in the presence of the PTW compatibilizer. At lower frequencies, the increase in complex viscosity can be justified by the amount of material with yield stress [57,71]. As can be seen, the yield stress is greatly increased by increasing the amount of GO in the presence of PTW compatibilizer, which means good dispersion of GO nanoparticles in PA6/PLA/PTW.…”

“…The rheological properties of the filled blends depend on the surface properties and the dispersion state of the droplet phase. Hence, rheological tests are a powerful tool to investigate the dispersion state of nanofillers [57,71]. To investigate the effect of GO addition on rheological properties, storage modulus and complex viscosity of nanocomposites were determined.…”

“…So far, several studies have been conducted on the use of fillers such as nanoscale graphene to improve the properties of polyamides [37]. This improvement includes strengthening the mechanical properties, reducing the permeability and better flame retardancy [38][39][40][41][42]. Studies have shown that nanoparticles with high aspect ratio have complex effects such as lamination.…”

Fabrication of novel strain sensors from green TPV nanocomposites based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/silicone rubber/silicon-modified graphene oxide

“…The preferential nanofiller localization occurs when nanofillers are dispersed in polymer blends or thermoplastic elastomers. 22 The SMGO as a nanofiller tends to locate in one phase or at the interface between the phases depending on the system's interfacial energy and wetting coefficient. The preferential localization of SMGO can affect the morphology and mechanical properties of the TPV nanocomposites.…”