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Revealing the supramolecular nature of side-chain terpyridine-functionalized polymer networks.

Brassinne J, Jochum FD, Fustin CA, Gohy JF - Int J Mol Sci (2015)

Bottom Line: Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture.In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization.By addition of transition metal ions, concentrated aqueous solutions of this polymer turn into metallo-supramolecular hydrogels whose dynamic mechanical properties are investigated by rotational rheometry.

View Article: PubMed Central - PubMed

Affiliation: Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium. jeremy.brassinne@uclouvain.be.

ABSTRACT
Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture. In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization. By addition of transition metal ions, concentrated aqueous solutions of this polymer turn into metallo-supramolecular hydrogels whose dynamic mechanical properties are investigated by rotational rheometry. Hence, the possibility for the material to relax mechanical constrains via dissociation of transient cross-links is brought into light. In addition, the complex phenomena occurring under large oscillatory shear are interpreted in the context of transient networks.

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Size exclusion chromatrography (SEC) traces for of pure P(DMAMEA200-co-TpyMA4.5) copolymer (molar masses are given with respect to polystyrene standards).
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ijms-16-00990-f004: Size exclusion chromatrography (SEC) traces for of pure P(DMAMEA200-co-TpyMA4.5) copolymer (molar masses are given with respect to polystyrene standards).

Mentions: The characterization of the P(DMAMEA200-co-TpyMA4.5) copolymer was further performed by size exclusion chromatography (SEC), revealing a narrow molar mass distribution, as shown in Figure 4. The number-average molar mass (Mn) evaluated by SEC was however higher than the absolute molar mass calculated by 1H NMR. In fact, this divergence can be easily interpreted as molar masses are given in SEC with respect to polystyrene standards, which have different hydrodynamic volumes and thus elution volumes than the P(DMAMEA200-co-TpyMA4.5) copolymer chains of identical molar masses.


Revealing the supramolecular nature of side-chain terpyridine-functionalized polymer networks.

Brassinne J, Jochum FD, Fustin CA, Gohy JF - Int J Mol Sci (2015)

Size exclusion chromatrography (SEC) traces for of pure P(DMAMEA200-co-TpyMA4.5) copolymer (molar masses are given with respect to polystyrene standards).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4307286&req=5

ijms-16-00990-f004: Size exclusion chromatrography (SEC) traces for of pure P(DMAMEA200-co-TpyMA4.5) copolymer (molar masses are given with respect to polystyrene standards).
Mentions: The characterization of the P(DMAMEA200-co-TpyMA4.5) copolymer was further performed by size exclusion chromatography (SEC), revealing a narrow molar mass distribution, as shown in Figure 4. The number-average molar mass (Mn) evaluated by SEC was however higher than the absolute molar mass calculated by 1H NMR. In fact, this divergence can be easily interpreted as molar masses are given in SEC with respect to polystyrene standards, which have different hydrodynamic volumes and thus elution volumes than the P(DMAMEA200-co-TpyMA4.5) copolymer chains of identical molar masses.

Bottom Line: Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture.In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization.By addition of transition metal ions, concentrated aqueous solutions of this polymer turn into metallo-supramolecular hydrogels whose dynamic mechanical properties are investigated by rotational rheometry.

View Article: PubMed Central - PubMed

Affiliation: Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium. jeremy.brassinne@uclouvain.be.

ABSTRACT
Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture. In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization. By addition of transition metal ions, concentrated aqueous solutions of this polymer turn into metallo-supramolecular hydrogels whose dynamic mechanical properties are investigated by rotational rheometry. Hence, the possibility for the material to relax mechanical constrains via dissociation of transient cross-links is brought into light. In addition, the complex phenomena occurring under large oscillatory shear are interpreted in the context of transient networks.

Show MeSH
Related in: MedlinePlus