Combination of permanent hydrosilylation and reversible Diels–Alder reactions for self-healing poly(dimethylsiloxane) materials with enhanced ageing properties

Yilmaz, Dijwar; Lansade, D.; Lewandowski, Simon; Perraud, Sophie; Llevot, Audrey; Carlotti, Stéphane

doi:10.1016/j.mtchem.2022.100860

Cited by 13 publications

(7 citation statements)

References 63 publications

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“…For example, mussels can survive in extreme conditions. The reason is that byssus can form multiple interactions as hard and soft phases to enhance its durability. ,− Inspired by this natural mechanism, extensive strategies that combine strong and weak bonds have been developed to obtain tough and self-healing polymer elastomers capable of healing at room temperature without any external stimuli. − Yu et al fabricated a self-healable silicone elastomer based on coordination interactions and ionic bonds . Unfortunately, the silicone elastomer showed moderate mechanical properties (tensile strength of 0.73 MPa and elongation at breaking of 548%) and healing efficiency (80%).…”

Section: Introductionmentioning

confidence: 99%

Transparent, Tough, and Self-Healable Elastomer Based on Dynamic Dual Cross-Linking of Coordination and Disulfide Bonds

Lin,

Liang,

et al. 2024

ACS Appl. Polym. Mater.

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Tough and stretchable self-healing elastomers are highly desired for applications in wearable devices, soft robotics, and human motion detection. However, most elastomers that heal at room temperature suffer from poor mechanical properties. In this study, inspired by mussels, a dual cross-linked strategy that combines weak disulfide bonds and strong coordination bonds is proposed to solve the above-mentioned problems. The obtained transparent silicone elastomer shows high tensile stress (1.4 MPa), stretchability (2006%), toughness (14.7 MJ m −3 ), and excellent healing efficiency (97%) at room temperature. The outstanding performance of the silicone elastomer is attributed to the synergistic effects of coordination and disulfide bonds. In the dual cross-linked network, disulfide bonds are introduced as sacrificial bonds to endow the elastomer with excellent stretchability and self-healing property, and coordination bonds are conductive to improving robustness and elasticity. Given the good mechanical and healing property of the developed silicone elastomer, it enables the easy construction of flexible strain sensors with excellent electrical conductivity and sensing stability. Our study provides insights into the development of self-healable silicone elastomers for flexible electronics.

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Section: Introductionmentioning

confidence: 99%

Transparent, Tough, and Self-Healable Elastomer Based on Dynamic Dual Cross-Linking of Coordination and Disulfide Bonds

Lin,

Liang,

et al. 2024

ACS Appl. Polym. Mater.

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“…The literature describing the use of self-healing materials for space applications is relatively scarce today. Mainly extrinsic systems based on microcapsules were developed to prevent microcracks induced by UV irradiations. ,− Additionally, few studies investigated the use self-healing performance of ionomers after ballistic tests that could simulate space debris impacts. − Recently, we developed self-healing PDMS dual networks based on the combination of permanent hydrosilylation and reversible Diels–Alder reactions and showed their enhanced aging properties under proton irradiations . However, the optical properties of these materials were not optimal for our quest for transparent self-healing coatings for solar panel applications in space.…”

Section: Introductionmentioning

confidence: 99%

“…18−20 networks based on the combination of permanent hydrosilylation and reversible Diels−Alder reactions and showed their enhanced aging properties under proton irradiations. 21 However, the optical properties of these materials were not optimal for our quest for transparent self-healing coatings for solar panel applications in space. In this study, we will focus on a synthetic approach that promotes the production of transparent self-healing PDMS.…”

Section: ■ Introductionmentioning

confidence: 99%

Self-Healing Transparent Poly(dimethyl)siloxane with Tunable Mechanical Properties: Toward Enhanced Aging Materials for Space Applications

Yilmaz,

Du Fraysseix,

Lewandowski

et al. 2024

ACS Appl. Mater. Interfaces

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When exposed to the geostationary orbit, polymeric materials tend to degrade on their surface due to the appearance of cracks. Implementing the self-healing concept in polymers going to space is a new approach to enhancing the lifespan of materials that cannot be replaced once launched. In this study, the elaboration of autonomous self-healing transparent poly(dimethylsiloxane) (PDMS) materials resistant to proton particles is presented. The PDMS materials are functionalized with various compositions of urea and imine moieties, forming dynamic covalent and/or supramolecular networks. The hydrogen bonds induced by the urea ensure the formation of a supramolecular network, while the dynamic covalent imine bonds are capable of undergoing exchange reactions. Materials with a broad range of mechanical properties were obtained depending on the composition and structure of the PDMS networks. As coating applications in a spatial environment were mainly targeted, the surface properties of the polymer are essential. Thus, percentages of scratch recovery were determined by AFM. From these data, self-healing kinetics were extracted and rationalized based on the polymer structures. The obtained data were in good agreement with the relaxation times determined by rheology in stress relaxation experiments. Moreover, the accelerated aging of materials under proton irradiation, simulating a major part of the geostationary environment, revealed a strong limitation or disappearance of cracks while keeping the transparency of the PDMS. These promising results open routes to prepare new flexible autonomous polymeric materials for space applications.

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“…External requires the encapsulation of ‘healing’ agents that, when damaged, fill the formed microfracture [ 5 , 6 ]. Internal is caused by the presence of different types of reversible–destructive bonds (disulfide bonds [ 7 ] and Diels–Alder reactions [ 8 ] for covalent–reversible interaction; hydrogen bonds [ 9 ], π-π stacking [ 10 ] and cation-π interaction [ 11 ], ionic [ 12 ], host–guest [ 13 ] and metal–ligand (M–L) interactions [ 14 ] for non-covalent reversible interactions).…”

Section: Introductionmentioning

confidence: 99%

New Self-Healing Metallosupramolecular Copolymers with a Complex of Cobalt Acrylate and 4′-Phenyl-2,2′:6′,2″-terpyridine

et al. 2023

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Currently, the chemistry of self-healing polymers is aimed not only at obtaining materials with high self-healing efficiency, but also at improving their mechanical performance. This paper reports on a successful attempt to obtain self-healing copolymers films of acrylic acid, acrylamide and a new metal-containing complex of cobalt acrylate with a 4′-phenyl-2,2′:6′,2″-terpyridine ligand. Samples of the formed copolymer films were characterized by ATR/FT-IR and UV-vis spectroscopy, elemental analysis, DSC and TGA, SAXS, WAXS and XRD studies. The incorporation of the metal-containing complex directly into the polymer chain results in an excellent tensile strength (122 MPa) and modulus of elasticity (4.3 GPa) of the obtained films. The resulting copolymers demonstrated self-healing properties both at acidic pH (assisted by HCl healing) with effective preservation of mechanical properties, and autonomously in a humid atmosphere at room temperature without the use of initiators. At the same time, with a decrease in the content of acrylamide, a decrease in the reducing properties was observed, possibly due to an insufficient amount of amide groups to form hydrogen bonds through the interface with terminal carboxyl groups, as well as a decrease in the stability of complexes in samples with a high content of acrylic acid.

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Combination of permanent hydrosilylation and reversible Diels–Alder reactions for self-healing poly(dimethylsiloxane) materials with enhanced ageing properties

Cited by 13 publications

References 63 publications

Transparent, Tough, and Self-Healable Elastomer Based on Dynamic Dual Cross-Linking of Coordination and Disulfide Bonds

Transparent, Tough, and Self-Healable Elastomer Based on Dynamic Dual Cross-Linking of Coordination and Disulfide Bonds

Self-Healing Transparent Poly(dimethyl)siloxane with Tunable Mechanical Properties: Toward Enhanced Aging Materials for Space Applications

New Self-Healing Metallosupramolecular Copolymers with a Complex of Cobalt Acrylate and 4′-Phenyl-2,2′:6′,2″-terpyridine

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