Self-healing and reprocessing of reclaimed rubber prepared by re-crosslinking waste natural rubber powders

Ye, Juan; Tan, Shujun; Deng, Han-Wu; Huang, Weibin; Hao, Jianwei; Zhang, Lanyue; Xiang, Hongping; Zhang, Ming Qiu

doi:10.1039/d3gc01652h

Cited by 14 publications

(3 citation statements)

References 42 publications

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“…The self-healability of the polymeric electrolyte and electrode binder is believed to be capable of timely remending the damage (e.g., cracking and delamination) induced during battery operation, hence improving the cycling performance and reliability. ,,, To qualitatively inspect the self-healing property of RILNs-LiPF 6 -LGPS 15 , a circular specimen was bisected by scissors, followed by bringing the pieces into contact and allowing them to heal at room temperature for 24 h (Figure a). The self-healing efficiency is quantitatively estimated by the recovery of the elongation at break and ionic conductivity.…”

Section: Resultsmentioning

confidence: 99%

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Huang,

Zhang,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Ceramic−polymer composite solid electrolytes (CSEs) have attracted great attention by combining the advantages of polymer electrolytes and inorganic ceramic electrolytes. Herein, Li 10 GeP 2 S 12 (LGPS) particles are incorporated into poly(ethylene oxide) (PEO)-based reversibly interlocked polymer networks (RILNs) derived from the topological rearrangement of two PEO networks cross-linked by reversible imine bonds and disulfide linkages. A series of highly ionic conductive, self-healing CSEs are obtained accordingly. The interlocking architecture successfully inhibits PEO crystallization, increasing the amorphous phase for Li ion transportation, and stabilizes the conductive pathways of LGPS particles by its unique confinement effect. Meanwhile, the LGPS particles cooperate with the RILN matrix, forming a filler−polymer interfacial phase for additional Li ion transportation and strengthening and toughening the resultant CSEs via the strong intermolecular Li + −O 2− interactions. Furthermore, the dynamic characteristics of the included reversible bonds ensure a multiple intrinsic self-healing capability. Consequently, the CSEs containing 15 wt % LGPS deliver a high ionic conductivity (1.06 × 10 −3 S cm −1 ) and high Li ion transference number (∼0.6) at 25 °C, a wide electrochemical stability window (>4.9 V), good mechanical properties (0.63 MPa, 377%), and a stable CSE/Li anode interface. The integrated Li/CSE/LiFePO 4 battery exhibits a specific discharge capacity of 110.8 mAh g −1 at 1 C (25 °C) and a capacity retention of 76.9% after 200 cycles. Thanks to the healability, the damaged CSEs can regain the structural integrity, ion conductive capability, and cycling performance of the assembled cells. The present work provides an effective strategy to fabricate CSEs for lithium metal batteries that are workable at ambient temperature.

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Section: Resultsmentioning

confidence: 99%

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Huang,

Zhang,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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“…As a result, various catalyst-free silicone elastomers have been developed. The critical aspect of these strategies is the rational selection of green cross-linkers and the polysiloxanes with appropriate functional groups . Among them, amino-functionalized polysiloxanes, benefiting from their commercial availability and high reactivity, can be easily cross-linked by a variety of catalyst-free reactions, such as the aza-Michael reaction, , the urea reaction with isocyanates, , and the imine bond with aldehydes. , However, the elastomers of these cross-linking systems do not have adhesion properties and cannot meet their underwater curing and adhesion needs.…”

Section: Introductionmentioning

confidence: 99%

Mussel-Inspired Green Cross-Linking of Silicone Elastomers and Its Tunable Adhesion Behavior and Underwater Curing Capability

Liu,

Li,

et al. 2024

ACS Appl. Polym. Mater.

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Silicone elastomers have been widely used in underwater environments as significant sealants and adhesives. However, silicone elastomers usually need to be cured in air because excess water can inhibit or prevent their curing process. In this study, inspired by mussels, we have prepared catalyst-free and eco-friendly silicone elastomers using catechol as a green cross-linker. Under mild conditions (pH 8.5), catechol-and amino-functionalized polysiloxanes are cross-linked to form elastomers by Michael addition and Schiff base reactions. As an adhesive, it shows excellent adhesion to different materials. The lap shear strength with the aluminum substrate is 2.1 times higher than that of conventional silicone rubber, reaching 0.62 MPa, and the adhesive tensile strength can reach 0.72 MPa. Notably, it can significantly accelerate the curing of elastomers in the presence of a hydrogen peroxide solution, which results in very fast curing underwater. Moreover, the as-prepared silicone elastomers can effectively plug leaks and exhibit excellent adhesion properties in water. Developing bioinspired silicone elastomers that can be cured underwater may shed light on the research of eco-friendly silicone materials and offer innovative insight for musselinspired adhesives.

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“…However, these advantageous properties come at the expense of the self-healing ability and direct recyclability, resulting in significant environmental pollution and resource depletion. With approximately 30 million tons of elastomer waste discarded worldwide each year, 4 it is imperative to develop next-generation elastomers that combine ultrafast resilience, mechanical robustness, repairability, and recyclability.…”

Section: Introductionmentioning

confidence: 99%

Healable and Recyclable Polyurethane with Natural-Rubber-like Resilience via π-Type Tweezer Structure Stabilizing Dynamical Hard Domains

Xiong,

Wu,

Zhang

et al. 2023

Macromolecules

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Achieving ultrafast resilience comparable to that of irreversible cross-linking elastomers remains a formidable challenge for self-healing supramolecular elastomers. Herein, we construct a π-type tweezer structure formed by imidazolidinylurea and aromatic imine to stabilize dynamical hard domains (SDHDs) in polyurethane (PU) elastomers. SDHDs endow the dynamic PU network with high binding energy and minimal stress relaxation at room temperature, similar to irreversible covalent cross-links. As such, the elastomer demonstrates rapid resilience comparable to vulcanized natural rubber as well as high mechanical strength and toughness. Meanwhile, SDHDs can be readily activated upon heating, enabling exceptional healing ability (∼100% healing efficiency) under mild conditions (50 °C) and complete recovery of mechanical properties after recycling. More interestingly, the PU elastomer exhibits significant elastocaloric effects with an adiabatic temperature change of −13.5 °C, surpassing that of state-of-the-art vulcanized natural rubber (−9.4 °C). Therefore, this work presents a new approach for structural design that enables a balance between conflicting characteristics and expands the potential applications of self-healing supramolecular elastomers.

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Self-healing and reprocessing of reclaimed rubber prepared by re-crosslinking waste natural rubber powders

Abstract: The efficient and sustainable disposal of waste rubber remains an extreme challenge worldwide due to the huge quantities and non-biodegradable structures. Although many self-healable and reprocessable rubbers have been designed...

Cited by 14 publications

References 42 publications

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Mussel-Inspired Green Cross-Linking of Silicone Elastomers and Its Tunable Adhesion Behavior and Underwater Curing Capability

Healable and Recyclable Polyurethane with Natural-Rubber-like Resilience via π-Type Tweezer Structure Stabilizing Dynamical Hard Domains

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Self-healing and reprocessing of reclaimed rubber prepared by re-crosslinking waste natural rubber powders

Abstract: The efficient and sustainable disposal of waste rubber remains an extreme challenge worldwide due to the huge quantities and non-biodegradable structures. Although many self-healable and reprocessable rubbers have been designed...

Cited by 14 publications

References 42 publications

Highly Ionic Conductive, Self-Healing, Li10GeP2S12-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Highly Ionic Conductive, Self-Healing, Li10GeP2S12-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Mussel-Inspired Green Cross-Linking of Silicone Elastomers and Its Tunable Adhesion Behavior and Underwater Curing Capability

Healable and Recyclable Polyurethane with Natural-Rubber-like Resilience via π-Type Tweezer Structure Stabilizing Dynamical Hard Domains

Contact Info

Product

Resources

About

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability

Highly Ionic Conductive, Self-Healing, Li₁₀GeP₂S₁₂-Filled Composite Solid Electrolytes Based on Reversibly Interlocked Macromolecule Networks for Lithium Metal Batteries with Improved Cycling Stability