Plasticization of a Semicrystalline ...
Document type :
Article dans une revue scientifique
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Title :
Plasticization of a Semicrystalline Metallosupramolecular Polymer Network
Author(s) :
Marx, Franziska [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Pal, Subhajit [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Sautaux, Julien [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Pallab, Nazim [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Weder, Christoph [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Schrettl, Stephen [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Université de Fribourg = University of Fribourg [UNIFR]
Pal, Subhajit [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Sautaux, Julien [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Pallab, Nazim [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Stoclet, Gregory [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Weder, Christoph [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Schrettl, Stephen [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Journal title :
ACS Polymers Au
Abbreviated title :
ACS Polym. Au
Volume number :
3
Pages :
132-140
Publisher :
American Chemical Society (ACS)
Publication date :
2022-11-10
HAL domain(s) :
Chimie/Matériaux
English abstract : [en]
The assembly of ligand-functionalized (macro)monomers with suitable metal ions affords metallosupramolecular polymers (MSPs). On account of the reversible and dynamic nature of the metal–ligand complexes, these materials ...
Show more >The assembly of ligand-functionalized (macro)monomers with suitable metal ions affords metallosupramolecular polymers (MSPs). On account of the reversible and dynamic nature of the metal–ligand complexes, these materials can be temporarily (dis-)assembled upon exposure to a suitable stimulus, and this effect can be exploited to heal damaged samples, to facilitate processing and recycling, or to enable reversible adhesion. We here report on the plasticization of a semicrystalline, stimuli-responsive MSP network that was assembled by combining a low-molecular-weight building block carrying three 2,6-bis(1′-methylbenzimidazolyl) pyridine (Mebip) ligands and zinc bis(trifluoromethylsulfonyl)imide (Zn(NTf2)2). The pristine material exhibits high melting (Tm = 230 °C) and glass transition (Tg ≈ 157 °C) temperatures and offers robust mechanical properties between these temperatures. We show that this regime can be substantially extended through plasticization. To achieve this, the MSP network was blended with diisodecyl phthalate. The weight fraction of this plasticizer was systematically varied, and the thermal and mechanical properties of the resulting materials were investigated. We show that the Tg can be lowered by more than 60 °C and the toughness above the Tg is considerably increased.Show less >
Show more >The assembly of ligand-functionalized (macro)monomers with suitable metal ions affords metallosupramolecular polymers (MSPs). On account of the reversible and dynamic nature of the metal–ligand complexes, these materials can be temporarily (dis-)assembled upon exposure to a suitable stimulus, and this effect can be exploited to heal damaged samples, to facilitate processing and recycling, or to enable reversible adhesion. We here report on the plasticization of a semicrystalline, stimuli-responsive MSP network that was assembled by combining a low-molecular-weight building block carrying three 2,6-bis(1′-methylbenzimidazolyl) pyridine (Mebip) ligands and zinc bis(trifluoromethylsulfonyl)imide (Zn(NTf2)2). The pristine material exhibits high melting (Tm = 230 °C) and glass transition (Tg ≈ 157 °C) temperatures and offers robust mechanical properties between these temperatures. We show that this regime can be substantially extended through plasticization. To achieve this, the MSP network was blended with diisodecyl phthalate. The weight fraction of this plasticizer was systematically varied, and the thermal and mechanical properties of the resulting materials were investigated. We show that the Tg can be lowered by more than 60 °C and the toughness above the Tg is considerably increased.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2024-01-10T15:02:38Z
2024-01-24T12:36:29Z
2024-01-24T12:36:29Z
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