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Pommella A, Griffiths P, Coativy G, Dalmas F, Ranoo S, Schmidt AM, Méchin F, Bernard J, Zinn T, Narayanan T, Meille S, Baeza GP. Fate of Magnetic Nanoparticles during Stimulated Healing of Thermoplastic Elastomers. ACS Nano 2023; 17:17394-17404. [PMID: 37578990 DOI: 10.1021/acsnano.3c05440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
We have investigated the heating mechanism in industrially relevant, multi-block copolymers filled with Fe nanoparticles and subjected to an oscillatory magnetic field that enables polymer healing in a contactless manner. While this procedure aims to extend the lifetime of a wide range of thermoplastic polymers, repeated or prolonged stimulus healing is likely to modify their structure, mechanics, and ability to heat, which must therefore be characterized in depth. In particular, our work sheds light on the physical origin of the secondary heating mechanism detected in soft systems subjected to magnetic hyperthermia and triggered by copolymer chain dissociation. In spite of earlier observations, the origin of this additional heating remained unclear. By using both static and dynamic X-ray scattering methods (small-angle X-ray scattering and X-ray photon correlation spectroscopy, respectively), we demonstrate that beyond magnetic hysteresis losses, the enormous drop of viscosity at the polymer melting temperature enables motion of nanoparticles that generates additional heat through friction. Additionally, we show that applying induction heating for a few minutes is found to magnetize the nanoparticles, which causes them to align in dipolar chains and leads to nonmonotonic translational dynamics. By extrapolating these observations to rotational dynamics and the corresponding amount of heat generated through friction, we not only clarify the origin of the secondary heating mechanism but also rationalize the presence of a possible temperature maximum observed during induction heating.
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Affiliation(s)
- Angelo Pommella
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR 5510, Villeurbanne 69621, France
| | - Pablo Griffiths
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR 5510, Villeurbanne 69621, France
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, LGEF, EA682, Villeurbanne 69621, France
| | - Gildas Coativy
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, LGEF, EA682, Villeurbanne 69621, France
| | - Florent Dalmas
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR 5510, Villeurbanne 69621, France
| | - Surojit Ranoo
- Chemistry Department, Institute for Physical Chemistry, University of Cologne, Cologne 50939, Germany
| | - Annette M Schmidt
- Chemistry Department, Institute for Physical Chemistry, University of Cologne, Cologne 50939, Germany
| | - Françoise Méchin
- Université de Lyon, INSA Lyon, Université Claude Bernard Lyon 1, Université Jean Monnet, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Villeurbanne Cédex F-69621, France
| | - Julien Bernard
- Université de Lyon, INSA Lyon, Université Claude Bernard Lyon 1, Université Jean Monnet, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Villeurbanne Cédex F-69621, France
| | - Thomas Zinn
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
| | - Theyencheri Narayanan
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
| | - Sylvain Meille
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR 5510, Villeurbanne 69621, France
| | - Guilhem P Baeza
- Univ Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR 5510, Villeurbanne 69621, France
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Nébouy M, Morthomas J, Fusco C, Chazeau L, Jabbari-Farouji S, Baeza GP. Mechanistic Understanding of Sticker Aggregation in Supramolecular Polymers: Quantitative Insights from the Plateau Modulus of Triblock Copolymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Nébouy
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621Villeurbanne, France
| | - Julien Morthomas
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621Villeurbanne, France
| | - Claudio Fusco
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621Villeurbanne, France
| | - Laurent Chazeau
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621Villeurbanne, France
| | - Sara Jabbari-Farouji
- Institute of Theoretical Physics (UvA), University of Amsterdam, Science Park 904, 1098 XHAmsterdam, Netherlands
| | - Guilhem P. Baeza
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621Villeurbanne, France
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Abstract
In the assemblies of subnanoscale polyhedral oligomeric silsesquioxane, topological interaction makes the dominant contribution to their viscoelasticity with broad tunability. The assembly molecules are designed with dumbbell, triangular, and tetrahedral shapes, and they demonstrate an intrinsic glassy feature with neither long-range ordering nor supramolecular assembly formation in their bulk. Their viscoelasticity can be broadly tuned through the tailoring of molecular topologies, while the trimer and tetramer assemblies afford elastic moduli comparable to those of rubbers (∼0.5 MPa) even 80 K above their glass transition temperatures. Molecular dynamics studies reveal the topological constraints resulting from the topology-disrupted cooperative dynamics among the cluster assemblies, and this finally leads to the typical caging dynamics of the structural units and the elasticity of the bulk materials. Further broadband dielectric spectroscopy studies uncover the unique hierarchical relaxation dynamics, inspiring the strategy for the decoupling of mechanical strengths and toughness for the design of impact resistant materials.
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Affiliation(s)
- Xin Zhou
- South China Advanced Institute for Soft Matter Science and Technology, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Junsheng Yang
- South China Advanced Institute for Soft Matter Science and Technology, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jie Yang
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
| | - Panchao Yin
- South China Advanced Institute for Soft Matter Science and Technology, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
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