Results 21 to 30 of about 49,033 (306)

Modeling and Scaling of the Viscosity of Suspensions of Asphaltene Nanoaggregates

open access: yesEnergies, 2017
The scaling and modeling of the viscosity of suspensions of asphaltene nanoaggregates is carried out successfully taking into consideration the solvation and clustering of nanoaggragates, and the jamming of the suspension at the glass transition volume ...
Rajinder Pal
doaj   +1 more source

Study of the Molecular Weight of Pullulan Produced by Aureobasidium pullulans from Industrial Waste

open access: yesMaterials Research, 2023
The objective of this research was the sustainable development of pullulan and its structural and rheological characterization. In addition, the cultivation of the A.
Victor R. L. Oliveira   +3 more
doaj   +1 more source

Miscibility study of poly acrylamide (PAM) and Acacia Senegal (gum arabic) blends [PDF]

open access: yesChemical Review and Letters, 2019
The work entails the viscometric study of a common plant gum found in Nigeria (Acacia Senegal) blended with polyacrylamide (PAM). The gum was purified after collected and mixed in specific ratios of 10:90, 30:70, 50:50, 70:30 and 90:10 with PAM, before ...
David Arthur   +4 more
doaj   +1 more source

The Investigation of Viscometric Properties of the Most Reputable Types of Viscosity Index Improvers in Different Lubricant Base Oils: API Groups I, II, and III

open access: yesLubricants, 2022
Four commercial viscosity index improvers (VII) have been used to investigate the behavioral differences of these compounds in three types of universally applicable base oils.
Seyed Ali Khalafvandi   +2 more
doaj   +1 more source

Effect of Sweeteners on Viscosity and Particle Size of Dilute Guar Gum Solutions [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2008
The effects of some synthetic sweeteners on the rheological and physical properties of guar gum in dilute solutions were investigated.Measurements include the determination of intrinsic viscosity and the particle size, surface weighted mean [D3, 2 ...
Vahid Samavati   +2 more
doaj  

Generalization of a Double-Point Method to Determine the Intrinsic Viscosity in a Polymer-Solvent Mixture

open access: yesChemical Engineering Transactions, 2013
A double-point method proposed in literature for the determination of the Intrinsic Viscosity of a polymer-solvent solution and based on the Ram-Moham-Rao single point equation, have been extended to all single-point expressions available in literature ...
E.A. Diez   +4 more
doaj   +1 more source

Research Progress on Typical Quaternary Ammonium Salt Polymers

open access: yesMolecules, 2022
Quaternary ammonium salt polymers, a kind of polyelectrolyte with a quaternary ammonium group, are widely used in traditional and emerging industries due to their good water-solubility, adjustable cationicity and molecular weight, high efficiency and ...
Xingqin Fu   +4 more
doaj   +1 more source

The Hydrodynamic Radii of Viscosity Index Improvers for Lubricant Oils

open access: yesTribology Online, 2019
Viscosity index improvers are polymeric additives that are commonly used to control the viscometrics of lubricants. Nevertheless, there have been few studies on the molecular size of these additives, which is the origin of their viscosity-increasing ...
Kazushi Tamura, Taeko Nakano
doaj   +1 more source

Intrinsic Viscosity Determination by “Single-Point” and “Double-Point” Equations

open access: yesApplied Rheology, 2009
“Single-point” equations used for intrinsic viscosity determination are greatly used when working with synthetic polymer solution systems. In this work we have applied them to a biological macromolecule in a bovine serum albumin (BSA)/water system ...
Curvale Rolando Antonio   +1 more
doaj   +1 more source

Sulfur polymerization strategy based on the intrinsic properties of polymers for advanced binder‐free and high‐sulfur‐content Li–S batteries

open access: yesSusMat, 2023
Lithium–sulfur (Li–S) batteries are the promising next‐generation secondary energy storage systems, because of their advantages of high energy density and environmental friendliness.
Zihui Song   +7 more
doaj   +1 more source

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