Results 11 to 20 of about 39,147 (236)

One-Dimensional Modelling of Polymer Flood Performance. Analytical and Graphical Solutions Modélisation de l'efficacité du déplacement unidimensionnel par injection de polymères. Solutions analytiques et graphiques

open access: yesOil & Gas Science and Technology, 2006
A graphical method for simulating linear polymer flooding is proposed. The method is based upon the analytical solution of Darcy's law and continuity equation which describe the two-phase, one-dimensional, incompressible flow of oil and polymer solution ...
Grattoni C. A., Bidner M. S.
doaj   +1 more source

Les élastomères thermoplastiques (TPE) Structure, propriétés, mise en oeuvre, applications. Synthèse bibliographique. Première partie Thermoplastic Elastomers (Tpe) Structure, Properties, Processing, Applications. Bibliographic Synthesis. Part One

open access: yesOil & Gas Science and Technology, 2006
Les élastomères thermoplastiques sont des matériaux relativement nouveaux qui se caractérisent à la fois par une mise en oeuvre rapide analogue à celle des polymères thermoplastiques et par des propriétés intermédiaires entre celles des élastomères ...
Nicaud J.
doaj   +1 more source

Prediction of Zero Shear Viscosity of Poly (Vinyl Chloride) Plastisols

open access: yesApplied Rheology, 2006
The rheological behaviour of PVC plastisols composed of a blend of suspension and micro-suspension resins in different proportions was investigated. The present work was mainly focused on the variation of the zero shear viscosity versus the concentration
Lainé Carole, Cassagnau Philippe
doaj   +1 more source

Interfacial rheology testing of molten polymer systems: Effect of molecular weight and temperature on the interfacial properties

open access: yesPolymer Testing, 2021
The development of new interfacial rheological setup (IRS) for characterizing the interfacial viscoelastic properties of polymer systems is a subject of growing interest and constitutes a well-known challenge of high scientific and industrial application
Younes El Omari   +3 more
doaj   +1 more source

Vinyl Sulfonate/Vinyl Amide Copolymers and Different Surfactants As Suitable Systems in Eorat Higher Temperatures and Salinities Utilisation de mélanges de copolymères vinyl sulfonate/vinyl amide et de différents tensio-actifs en RAP dans des conditions de fortes salinités et de températures élevées

open access: yesOil & Gas Science and Technology, 2006
For enhanced oil recovery flooding processes there will be an increasing demand for polymers having high temperature and electrolyte stability. High molecular weight copolymers based on vinyl sulfonate, vinyl amide, and acryl amide show high performances
Von Halasz S. P.
doaj   +1 more source

Probing Achiral Benzene‐1,3,5‐tricarboxamide Monomers as Inducers of Homochirality in Supramolecular Helical Catalysts**

open access: yesChemistryEurope, 2023
Adding a complementary achiral monomer to polymers embedding a mixture of enantiopure monomers (the “sergeants”) and achiral monomers (the “soldiers”) is expected to decrease the optical purity of the polymer main chain.
Huanjun Kong   +7 more
doaj   +1 more source

C29 Nanogels obtenus par interactions électrostatiques ; Formulation, caractérisations et études de libérations

open access: yesJournal Africain de Technologie Pharmaceutique et Biopharmacie, 2023
Introduction : Le domaine de la nanoformulation connaît un essor continu depuis l'avènement de vecteurs permettant d'encapsuler des molécules à la fois hydrosolubles, liposolubles et amphiphiles pour la délivrance de médicaments.
Sidy Mouhamed Dieng   +9 more
doaj   +1 more source

Aspects récents de la thermodynamique des solutions de polymères Recent Aspects of the Thermodynamics of Polymer Solutions

open access: yesOil & Gas Science and Technology, 2006
On examine dans cet article différentes approches de la thermodynamique des solutions de polymères placées dans leur contexte historique. On rappelle d'abord le modèle du réseau de Flory-Huggins et on en souligne les déficiences.
Dayantis J.
doaj   +1 more source

Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

open access: yesMembranes, 2021
Polybutylene Succinate (PBS)/Graphene nanoplatelets (GnP) nanocomposites over a range of GnP from 0 to 1.35 wt.%. were prepared by a melt process. A mixture of individual graphene nanosheets and aggregates was obtained by the addition of GnP in the PBS ...
Raphaël Cosquer   +2 more
doaj   +1 more source

Influence of Low Molecular Weight Polymers on the Rheology of Bentonite Suspensions Influence de polymères de faible masse moléculaire sur la rhéologie de suspensions de bentonite

open access: yesOil & Gas Science and Technology, 2006
In this communication we demonstrate how relatively low molecular weight synthetic polymers significantly alter the rheological properties of Bentonite/water suspensions depending upon the polymer dosage and/or degree of surface coverage on the clay ...
Rossi S.   +4 more
doaj   +1 more source

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