Journal ArticleDOI
Viscoelastic Properties of Filled Polymers
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TLDR
In this paper, carbon black filled polyisobutylene samples (of low and high molecular weight) have shed light on the relationship between the behavior of disperse and polymeric systems.Abstract:
Rheological properties of carbon black filled polyisobutylene samples (of low and high molecular weight) have shed light on the relationship between the behaviour of disperse and polymeric systems. At sufficiently high filler concentration a structural skeleton seems to appear. This affects the properties.read more
Citations
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Poly(ethylene oxide)/Silica Nanocomposites: Structure and Rheology
Qiang Zhang and,Lynden A. Archer +1 more
TL;DR: In this paper, the effects of polymer−particle and particle-particle interactions on viscoelastic properties of nanocomposite materials are investigated using narrow molecular weight distribution poly(ethylene oxide) (PEO) containing isotropic silica nanospheres.
Journal ArticleDOI
Experimental investigations of shear and elongational flow properties of polystyrene melts reinforced with calcium carbonate, titanium dioxide, and carbon black
Hideho Tanaka,James L. White +1 more
TL;DR: In this article, shear and elongational flow measurements on polystyrene melts reinforced with small particles were carried out, and the influences of loading level, particle size, and surface treatment on shear viscosity, principal normal stress difference, and length of elongation were discussed.
Journal ArticleDOI
An experimental study of the influence of carbon black on the rheological properties of a polystyrene melt
Vincent M. Lobe,James L. White +1 more
TL;DR: In this article, a broad range of experiments on carbon black filled polystyrene melts is presented, which represents one of the most extensive investigations of a series of highly filled polymer melts.
Journal ArticleDOI
Effect of droplet size on the rheological properties of highly-concentrated w/o emulsions
TL;DR: In this article, the elastic modulus of highly concentrated emulsions of the water-in-oil type was studied and the time effects were observed: it was found that prolonged shearing results in an increase of viscosity in the low shear rate domain of several orders of magnitude.
Journal ArticleDOI
The rheological characterization and pipeline flow of high concentration water-in-oil emulsions
TL;DR: In this article, the rheological and transport properties of highly concentrated inverse phase (water-in-oil, w/o) emulsions were studied, and the flow curve of fresh emulsion was described by the Cross equation.
References
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Journal ArticleDOI
Transport characteristics of suspension: VIII. A note on the viscosity of Newtonian suspensions of uniform spherical particles
TL;DR: In this article, a critical analysis of the extensive experimental data on the relative viscosity of suspensions of uniform spherical particles was made, and the coefficients of different power series relating relative visco-solutions and volume fraction solids were determined using a nonlinear least squares procedure.
Journal ArticleDOI
Viscous properties of polymer melts and elastomers exemplified by ethylene-propylene copolymer
G. V. Vinogradov,L. I. Ivanova +1 more
TL;DR: The copolymer of ethylene and propylene possesses a sufficiently high thermo-oxidative resistance, making it possible to study its viscous properties, determine the appearance of elastic turbulence and wall slippage and measure the rate of the latter over a wide interval of temperatures ranging from room temperature to 260 °C as discussed by the authors.
Journal ArticleDOI
Conditions of unstable flow of visco-elastic polymer systems
TL;DR: In this article, the conditions of stable flow disturbance in viscoelastic media are discussed on the basis of similarity theory, and an elastic turbulence criterion determining the stability conditions as depending upon the interrelation between the elasticity force and viscous friction acting in the flow is introduced.
Journal ArticleDOI
Comparative description of the peculiarities of deformation of polymer and plastic disperse systems
G. V. Vinogradov,A. Ya. Malkin +1 more
TL;DR: In this article, various conditions of deformation of polymer melts are studied on a rotational elastoviscometer at different constant speeds of rotation of one of the measuring surfaces, and it is shown that raising the speed causes periodic slippage along the solid surface, ending in a rupture in the melt or complete tearoff of the deforming melt from the wall.
Journal ArticleDOI
Universality of the temperature‐independent viscosity characteristic of polymer melts and some of its consequences
A. Ya. Malkin,G. V. Vinogradov +1 more
TL;DR: In this article, it is shown that some results of recent publications (of Longworth and Piesky and of Bartos) can be treated as particular consequences of the principle of universality of temperatureindependent viscosity characteristics of polymer melts, earlier found by these authors.
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