Degradable, reprocessable, self-healing PDMS/CNTs nanocomposite elastomers with high stretchability and toughness based on novel dual-dynamic covalent sacrificial system

Lv, Chi; Wang, Jinke; Li, Zhongxiao; Zhao, Kaifeng; Jiao, Zheng

doi:10.1016/j.compositesb.2019.107270

Cited by 63 publications

(41 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such a high mechanical strength and fracture toughness are impressive among the reported thermoplastic polysiloxane-based elastomers (Figure ). ,,,,,− …”

Section: Resultsmentioning

confidence: 99%

Toward Robust, Tough, Self-Healable Supramolecular Elastomers for Potential Application in Flexible Substrates

Fan

Huang

Gong

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A robust, tough, and self-healable elastomer is a promising candidate for substrate in flexible electronic devices, but there is often a trade-off between mechanical properties (robustness and toughness) and self-healing. Here, a poly(dimethylsiloxane) (PDMS) supramolecular elastomer is developed based on metal-coordinated bonds with relatively high activation energy. The strong metal–coordination complexes and their corresponding ionic clusters acting as the cross-linking points strengthen the resultant supramolecular networks, which achieves superior mechanical robustness (2.81 MPa), and their consecutive dynamic rupture and reconstruction efficiently dissipate strain energy during the stretching process, which leads to an impressive fracture toughness (32 MJ/m3). Additionally, the reversible intermolecular interactions (weak hydrogen bonds and strong sacrificial coordination complexes/clusters) can break and re-form upon heating; thus, the elastomer self-heals at a moderate temperature with the highest healing efficiency of 95%. As such, the potential of the as-prepared supramolecular elastomer for a substrate material of flexible electronic devices is discovered.

show abstract

“…Such a high mechanical strength and fracture toughness are impressive among the reported thermoplastic polysiloxane-based elastomers (Figure ). ,,,,,− …”

Section: Resultsmentioning

confidence: 99%

Toward Robust, Tough, Self-Healable Supramolecular Elastomers for Potential Application in Flexible Substrates

Fan

Huang

Gong

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…In the near future, combinations will surely not be limited to two mechanisms, but it is likely that multiple combinations will be explored (three or more), seeking further positive effects. 219 The use of fillers or other additives as carriers of additional healing mechanisms could also be a promising option, 220,221 while molecular dynamics studies seem mandatory for simulating interactions between combined mechanisms and for predicting their effect on the self-healing capability. 181,[222][223][224] Fig .…”

Section: Outlook and Perspectivesmentioning

confidence: 99%

Evolution of self-healing elastomers, from extrinsic to combined intrinsic mechanisms: a review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The Zheng group used aromatic disulfide bonds and imine bonds to synthesize dual DMs with high elasticity and toughness. [ 241 ] The unique dual dynamic design enabled the nanocomposite materials to display up to 1420% strain at break, a toughness of 5000 kJ m −3 , and tensile strength of 1.10 MPa. Further, these mechanical properties can be modified by varying the composition and CNT content in the matrix of the polymer material.…”

Section: Dynamic Materials Crosslinked By the Combination Of Distinct...mentioning

confidence: 99%

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Zhang

Watuthanthrige

Wanasinghe

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Dynamic materials (DMs) or dynamers have potential applications across a broad range of material science challenges. These applications include sustainable materials as a part of the circular plastics economy, advanced materials with tailored high stress properties and biomedical agents. DMs are comprised of polymers that crosslinked through reversible covalent and noncovalent linking groups. This group provides reversible bonds, which impart properties such as (re)healing, adaptability, toughness into a material. The nature of the linker dictates the dynamer's stability and dynamic properties, although for many applications one linker alone cannot give materials with complex multiresponsive functions. The combination of multiple dynamic linkers can introduce complementary functionalities into a single material. This combination of linkers enhances the collective material properties by matching their strengths and offsetting the weaknesses, or by selecting linkers for specific functions, such as one linker for rapid exchange and the other to respond to external stimuli. This contribution highlights the possibilities and unique features of materials containing multiple dynamic linkers, reviewing both fundamental discoveries of materials possessing multiple dynamic bonds and applications facilitated by the presence of multiple linking group chemistry.

show abstract

Degradable, reprocessable, self-healing PDMS/CNTs nanocomposite elastomers with high stretchability and toughness based on novel dual-dynamic covalent sacrificial system

Cited by 63 publications

References 38 publications

Toward Robust, Tough, Self-Healable Supramolecular Elastomers for Potential Application in Flexible Substrates

Toward Robust, Tough, Self-Healable Supramolecular Elastomers for Potential Application in Flexible Substrates

Evolution of self-healing elastomers, from extrinsic to combined intrinsic mechanisms: a review

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Contact Info

Product

Resources

About