Unexpected Solvent Influence on the Rheology of Supramolecular Polymers

Abstract : A very limited change in the nature of the solvent (toluene versus pentylbenzene) can have an unexpectedly strong effect on the viscosity of a hydrogen-bonded supramolecular polymer. In pentylbenzene, slightly stronger hydrogen bonds are formed than in toluene, but the supramolecular polymer solution is ca. 25 times less viscous. Several hypotheses can be envisaged to explain this counter-intuitive result. We propose that this effect is actually related to a solvation effect involving the outer corona of the supramolecular objects. When the cohesive energy density of the solvent approaches the cohesive energy density of the outer corona of the supramolecular objects, the viscosity of solution is reduced, possibly because of faster local dynamics.
Type de document :
Article dans une revue
Macromolecules, American Chemical Society, 2017, 50 (17), pp.6631-6636. 〈10.1021/acs.macromol.7b00786〉
Domaine :
Liste complète des métadonnées

Littérature citée [11 références]  Voir  Masquer  Télécharger

http://hal.upmc.fr/hal-01635027
Contributeur : Gestionnaire Hal-Upmc <>
Soumis le : jeudi 16 novembre 2017 - 09:43:15
Dernière modification le : lundi 15 janvier 2018 - 09:24:52

Identifiants

Collections

Citation

Bruno Alvarenga, Matthieu Raynal, Laurent Bouteiller, Edvaldo Sabadini. Unexpected Solvent Influence on the Rheology of Supramolecular Polymers. Macromolecules, American Chemical Society, 2017, 50 (17), pp.6631-6636. 〈10.1021/acs.macromol.7b00786〉. 〈hal-01635027〉

Partager

Métriques

Consultations de la notice

22