Results 21 to 30 of about 2,099,251 (265)

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

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

Polyelectrolyte adsorption : Polymères aux interfaces [PDF]

open access: yes, 2000
Nous discutons les approches theoriques qui permettent d'etudier les polymeres charges qui s'adsorbent sur une surface plane dans deux situations : l'adsorption d'un polymere isole et l'adsorption a partir d'une solution lorsque le solvant est un solvant
D. Andelman, J. Joanny
semanticscholar   +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

Synthesis and Characterization of Vanillin-Based π-Conjugated Polyazomethines and Their Oligomer Model Compounds

open access: yesMolecules, 2022
The synthesis of π-conjugated polymers via an environmentally friendly procedure is generally challenging. Herein, we describe the synthesis of divanillin-based polyazomethines, which are derived from a potentially bio-based monomer.
Lauriane Giraud   +8 more
doaj   +1 more source

Polymer-Surfactant Mono and Bilayers Monocouches et bicouches de polymères et de tensioactifs

open access: yesOil & Gas Science and Technology, 2006
Although there are many studies of association of polymers and surfactants in solution, much less is known about their association at surfaces. In this paper, several examples will be presented : water insoluble polymers spread at the surface of ...
Langevin D.
doaj   +1 more source

Use of the corrected plane wave model for the determination of the reflection coefficient during horizontal plate swell interaction [PDF]

open access: yesMATEC Web of Conferences, 2019
The main objective of this work, is to calculate variations of the reflection coefficient of the regular wave by a submerged horizontal plate, using the corrected plane wave model, by choosing appropriately the immersion and the relative length of the ...
Amimi M., Naasse S., Chahine C.
doaj   +1 more source

Intensifying the ATRP synthesis of statistical copolymers by continuous micromixing flow techniques1

open access: yesGreen Processing and Synthesis, 2012
The impact of micromixers on copolymers’ characteristics in a continuous-flow microprocess was studied. A stainless steel coiled tube was used as the microreactor.
Parida Dambarudhar   +4 more
doaj   +1 more source

Destruction des farines animales : valorisation des fractions lipidiques en biolubrifiants et additifs biocarburants, et du résidu protéique (ou de l’ensemble)

open access: yesINRAE Productions Animales, 2004
L’objectif des travaux est d’étudier la faisabilité de nouvelles voies d’élimination et de valorisation des farines animales. Nous abordons ici l’étude de deux voies de valorisation complémentaires et indépendantes: d’une part, la valorisation de la ...
Z. MOULOUNGUI   +3 more
doaj   +1 more source

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