In this work, the compatibility and crystallinity of low density polyethylene (LDPE) and polybutene-1 (PB-1) blends were studied. Various blends of LDPE/PB-1 containing 5, 10 and 20 wt.% PB-1 were prepared in a corotating twin-screw extruder and characterized by scanning electron microscopy (SEM), shear oscillation rheology and wide-angle X-ray diffractometry (WAXD). A matrix-droplet morphology...

The effect of extensional flow on apparent shear viscosity has never previously been directly measured nor is it often considered. Here, for the first time, through using a novel configuration (two-phase response under flow), we have viscoelastic polymer solution in controlled and kinematically mixed manner. We show, via control transient experiment, that deformation depends not only rate but a...

In modern applied mathematics, engineering, and the physiological world, concept of peristalsis is great significance. The present article concentrates on peristaltic movement Carreau-Yasuda fluid through planner micro-channel under influence magnetic field partial slip conditions. governing system equations are nondimensionalized transformed using basic assumptions such as long wavelength low ...

This study deals with the entropy investigation of peristalsis a water–copper nanofluid through an asymmetric inclined channel. The channel is anticipated to be filled uniform permeable medium, constant magnetic field impinging on wall physical effects, such as Hall current, mixed convection, Ohmic heating, and heat generation/annihilation, are also considered. Mathematical modeling from given ...

In this chapter we introduce the fundamental concepts in Newtonian and complex fluid mechanics, beginning with the basic underlying assumptions in continuum mechanical modeling. The equations of mass and momentum conservation are derived, and the Cauchy stress tensor makes its first of many appearances. The Navier–Stokes equations are derived, along with their inertialess limit, the Stokes equa...

A two part study utilizing polyoxymethylene (POM) was undertaken to investigate a three stage process (Melt-Extrusion/Annealing/Uniaxial-Stretching) (MEAUS) employed to produce microporous films. In this first part, three POM resins (D, E & F) were melt-extruded into tubular films (blowup ratio; BUR = 1), where resin D has a higher weight average molecular weight (Mw) than resin E but both poss...

The effects of three different mixers, two different feeding orders and nanoclay content on the structure development and rheological properties of PE/nanoclay nanocomposite samples were investigated. Fractional Zener and Carreau–Yasuda models were applied to discuss the melt linear viscoelastic properties of the samples. Moreover, scaling law for fractal networks was used to quantify clay disp...