Rheology of polymer blends

Melt rheology of miscible or compatibilized polymer blends obtained from polyamidic and polyolefinic polymers

“…Only at concentrations above 10% did the PA6 blend viscosity again begin to increase. The same effect was observed in polymer melts containing solid particles of crystalline component or in 14 polymer melts containing mineral fillers. 15 One successful approach examined previously involves addition of polypropylene grafted with maleic anhydride (OR) as a third component to the iPP-PE/PA6 blends to improve their interfacial adhesion.…”

“…To compatibilize the iPP-PE/PA6, we considered, as an interfacial agent, a modified polypropylene able to react with the amine endgroups of polyamide, lowering the interfacial tension between iPP-PE and PA6. [9][10][11][12][13][14][15][16] It can be observed that the best dispersion occurred in the presence of OR; in fact, the size of the dispersed-phase particles was shown to decrease and this feature was confirmed by SEM analysis (Fig. 8a,b).…”

Rheological and calorimetric evidences of the fractionated crystallization of iPP dispersed in ethylene/?-olefin copolymers

“…1,2 Similar studies have also been pubmiscible polymer blends, at temperatures where lished [2][3][4][5][6] for pure polymers (e.g., HDPE, iPP, and one of the components can crystallize while the Nylon 6) or mixtures of polymers and nucleating other is molten, have been reported. These rheoagents, where the rheological measurements are logical evaluations have been performed on isotaccarried out at temperatures at which only part of the crystallinity has developed and most of the polymer is still in the melt state.…”

Steady and dynamic rheological behaviors of sodium carboxymethyl cellulose entangled semi-dilute solution with opposite charged surfactant dodecyl-trimethylammonium bromide

“…However, in concentrated polyelectrolyte aqueous solutions, the above measurements are unsuitable for detecting the interaction between polyelectrolyte and surfactant for the poor light transmission, high viscosity and high conductivity of complex solutions. It is noted that the rheological measurement is thought to be a preferred approach for examining the interactions between polymer blends [30][31][32]. Since the complex of surfactant and polyelectrolyte may result in a change of the polyelectrolyte structure in aqueous solution, its rheological behavior is supposed to be sensitive to the corresponding structure change.…”