Polymer Surfactant Interactions in Oil Enhanced Recovery Processes

2021 ◽  
Author(s):  
Massinissa Hamouma ◽  
Aline Delbos ◽  
Christine Dalmazzone ◽  
Annie Colin
Keyword(s):  
Enhanced Recovery ◽  
Recovery Processes ◽  
Surfactant Interactions ◽  
Polymer Surfactant

Heat capacities and volumes in aqueous polymer and polymer–surfactant solutions

1987 ◽  
Vol 65 (5) ◽  
pp. 990-995 ◽  
Author(s):  
Gérald Perron ◽  
Josée Francoeur ◽  
Jacques E. Desnoyers ◽  
Jan C. T. Kwak
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Polymer Concentration ◽  
Heat Capacities ◽  
Aqueous Mixtures ◽  
Alkyltrimethylammonium Bromides ◽  
Aqueous Polymer ◽  
Surfactant Interactions ◽  
Polymer Surfactant ◽  
Polymer Interaction

The apparent molar volumes and heat capacities of aqueous mixtures of neutral polymers and ionic surfactants were measured at 25 °C. The polymers chosen were poly(vinylpyrrolidone) (PVP) and poly(ethyleneoxide) (PEO) and the surfactants were the C8, C10, and C12 homologs of sodium alkylsulfates and the C10, C12, and C16 homologs of alkyltrimethylammonium bromides. The polymer–surfactant interactions depend on the nature of both components and on the chain length of the surfactant. The thermodynamic properties of the cationic surfactants are essentially the same in the absence and presence of polymer indicating little surfactant–polymer interaction. On the other hand, the thermodynamic properties of anionic surfactants are shifted, upon the addition of polymers, in the direction of enhanced hydrophobic association. The effect increases with the surfactant chain length and with the polymer concentration. The effect is larger with PVP than with PEO.

scholarly journals Progression of axial spondyloarthritis

2021 ◽  
Vol 15 (3) ◽  
pp. 7-14
Author(s):  
Sh. F. Erdes ◽  
T. V. Korotaeva
Keyword(s):  
Axial Spondyloarthritis ◽  
Enhanced Recovery ◽  
Inflammatory Cells ◽  
Tissue Loss ◽  
Bone Lesions ◽  
Vertebral Bone ◽  
Bone Mass Loss ◽  
Recovery Processes ◽  
Vertebral Bone Mass ◽  
Mechanical Influence

The spectrum of bone lesions in axial spondyloarthritis is of great interest. With inflammation and mechanical influence concurrence in the background, both tissue gain and tissue loss in a particular bone area can occur simultaneously. Moreover, if vertebral bone mass loss, perhaps, can be easily explained by chronic systemic inflammation, the reason of its gain, observed in axial spondyloarthritis remains a mystery. It is unclear whether it is a consequence of enhanced recovery processes after injury, adaptation to altered mechanical stress, response to inflammatory cells activation or cytokines, produced by them, or changes in Wnt signaling pathways (for example). Whether these factors act individually or collectively is also unclear.

Polymer-surfactant interactions studied with the surface force apparatus

1991 ◽  
Vol 146 (1) ◽  
pp. 242-250 ◽  
Author(s):  
J-F Argillier ◽  
R Ramachandran ◽  
W.C Harris ◽  
M Tirrell
Keyword(s):  
Surface Force ◽  
Surface Force Apparatus ◽  
Surfactant Interactions ◽  
Polymer Surfactant

Effect of polymer–surfactant interactions on elongational viscosity and atomization of peo solutions

2006 ◽  
Vol 138 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Zeynep Ergungor ◽  
Joseph M. Smolinski ◽  
Charles W. Manke ◽  
Esin Gulari
Keyword(s):  
Elongational Viscosity ◽  
Surfactant Interactions ◽  
Polymer Surfactant

Impact of stressing conditions and polymer–surfactant interactions on product characteristics of organic nanoparticles produced by media milling

2016 ◽  
Vol 294 ◽  
pp. 71-79 ◽  
Author(s):  
Christoph Konnerth ◽  
Frederik Flach ◽  
Sandra Breitung-Faes ◽  
Cornelia Damm ◽  
Jochen Schmidt ◽  
...  
Keyword(s):  
Product Characteristics ◽  
Organic Nanoparticles ◽  
Media Milling ◽  
Surfactant Interactions ◽  
Polymer Surfactant
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