Results 21 to 30 of about 1,359,714 (335)

The Viscosity of Extremely Low Concentrated Anionic Polyelectrolyte Solutions

Applied Rheology, 1999
Polyelectrolytes are macromolecules which carry a large quantity of ionizable groups along their chains. By dissolving them in suitable solvents, for example water, these groups dissociate in highly charged macroions and an equivalent quantity of low ...
Gampert Bernhard, Wilkes Christoph, Eich Thomas   +2 more
doaj   +1 more source

Modeling and Scaling of the Viscosity of Suspensions of Asphaltene Nanoaggregates

Energies, 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

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

Chemical 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, Augustina Aroh Oyibo, Samuel Adawara, Samuel Hassan, Emmanuel Uwaiya   +4 more
doaj   +1 more source

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

Materials 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, Victória V. Coelho, Eliana F. C. Sérvulo, Verônica M. de A. Calado   +3 more
doaj   +1 more source

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

Chemical 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, I. Diaz, J. Camacho, G. Ovejero, M.D. Romero   +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

Lubricants, 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, Muhammad Ali Pazokian, Ehsan Fathollahi   +2 more
doaj   +1 more source

Intrinsic Viscosity Determination of High Molecular Weight Biopolymers by Different Plot Methods. Chia Gum Case

, 2018
The chia (Salvia hispanica) generates an abundant and viscous mucilage, this is purified with periods of heating-cooling and finally precipitated with ethanol, obtaining chia gum, CG.
M. Masuelli
semanticscholar   +1 more source

Modelling Shear Flows with SPH and Grid Based Methods [PDF]

, 2010
Given the importance of shear flows for astrophysical gas dynamics, we study the evolution of the Kelvin-Helmholtz instability (KHI) analytically and numerically. We derive the dispersion relation for the two-dimensional KHI including viscous dissipation.
Agertz, Agertz, Andreas Burkert, Balsara, Banerjee, Benz, Bland-Hawthorn, Burkert, Burkert, Carroll, Chandrasekhar, Colella, Couchman, Daniel Price, Das, Dekel, Diemand, Español, Evrard, Fabian Heitsch, Flebbe, Fryxell, Funada, Gingold, Grcevich, Gritschneder, Gritschneder, Heinzeller, Heitsch, Hernquist, Hockney, Jesseit, Kaiser, Katz, Kotarba, Lanzafame, Lattanzio, Lucy, MacNeice, Marc Schartmann, Markus Wetzstein, Marri, Mignone, Monaghan, Monaghan, Monaghan, Morris, Murray, Naab, Navarro, Nelson, Park, Price, Quilis, Read, Ritchie, Robertson, Schuessler, Serna, Sijacki, Springel, Springel, Stefanie Walch, Steinmetz, Steinmetz, Takeda, Thacker, Thacker, Thomas, Veronika Junk, Vietri, Wadsley, Walch, Wetzstein   +73 more
core   +3 more sources

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

Iranian 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, Sayed Hadi Razavi, Sayed Mohammad Mousavi   +2 more
doaj  

Research Progress on Typical Quaternary Ammonium Salt Polymers

Molecules, 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, Yuejun Zhang, Xu Jia, Yongji Wang, Tingting Chen   +4 more
doaj   +1 more source