Principles for designing sustainable and high-strain rate stress wave dissipating materials DOI
J.J. Lee,

Gyeongmin Park,

Dongju Lee

et al.

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Dynamic covalent networks serve as effective tools for dissipating high-strain rate mechanical energy throughout reversible bond exchange reactions. Despite their potential, a gap exists in understanding how polymer chain mobility and the kinetics of reactions impact capabilities dynamic networks. This study presents an optimal strategy to enhance dissipation by controlling side structures rates Lipoic acid-derived polymers are chosen our model system due easily tunable chains disulfide-rich backbones. High-strain stress waves subjected using laser-induced shock wave technique. A strong correlation is observed between capability glass transition temperature poly(disulfide)s. Furthermore, addition catalyst accelerate disulfide reaction improves dissipation. Leveraging inherent nature cyclic disulfides, exhibit self-healing chemical recycling monomers. The principles this provide rational framework designing sustainable efficient materials.

Language: Английский

Salt-welding strategy for the design of repairable impact-resistant and wear-resistant hydrogels DOI Creative Commons

Jiangpeng Jia,

Shan Lu,

Shurui Sun

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(4)

Published: Jan. 24, 2025

Self-healing hydrogels can autonomously repair damage, enhancing their performance stability and broadening applications as soft devices. Although the incorporation of dynamic interactions enhances self-healing capabilities, it simultaneously weakens hydrogels’ strength. External stimuli such heating, while accelerating healing process, may also lead to dehydration. Developing a stable strategy that combines rapid high mechanical strength is challenging. Here, we introduce “salt-welding” for high-strength with room temperature self-healing. This achieved through borate ester bonds in salt-responsive poly(methacrylamide) hydrogel. The process involves “salt-fusion” convert fractures into viscous liquid swift healing, followed by “salt-concretion” toughen achieve posthealing 23 megapascals 95 minutes at temperature, near 100% efficiency. Leveraging tunable rate, hydrogel be tailored reparable wear-resistant material damping device.

Language: Английский

Citations

1
Diethyl-modified polydimethylsiloxane polymer-fluid-gels: Breakthrough of damping limits at ultra-low temperatures or ultra-high frequencies DOI
Qiang Feng, Yang Pan,

Ke Lei

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162167 - 162167

Published: April 1, 2025

Language: Английский

Citations

0
Designing High-Mechanical-Property Organic Polymeric Crystals: Insights from Stress Dispersion and Energy Dissipation Strategies DOI
Tianyu Shan, Liya Chen, Zhewen Guo

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

Despite recent significant advancements in the applications of organic polymeric crystals (OPCs), a comprehensive understanding design principles for high-mechanical-property remains somewhat elusive. Here, we investigate mechanical properties OPCs from perspectives stress dispersion and energy dissipation by examining macrocycle three analogous polymers with different solvent fillings, utilizing novel research platform constructed via dative B-N bonds. Through thorough study investigation into molecular mechanisms these model topologies, it was demonstrated that structural expansion filling are effective pathways enhancing performance employing strategies. Overall, our showcases precise control over topology OPC materials elucidates specific modulating their performance, offering broader perspective efficiently other crystalline polymers, such as metal-organic frameworks (MOFs) covalent (COFs).

Language: Английский

Citations

0
Mechanically robust and dynamic supramolecular polymer networks enabled by [an]daisy chain backbones DOI
Yongming Wang, Yi Ding, Yuhang Liu

et al.

Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Language: Английский

Citations

3
Principles for designing sustainable and high-strain rate stress wave dissipating materials DOI
J.J. Lee,

Gyeongmin Park,

Dongju Lee

et al.

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Dynamic covalent networks serve as effective tools for dissipating high-strain rate mechanical energy throughout reversible bond exchange reactions. Despite their potential, a gap exists in understanding how polymer chain mobility and the kinetics of reactions impact capabilities dynamic networks. This study presents an optimal strategy to enhance dissipation by controlling side structures rates Lipoic acid-derived polymers are chosen our model system due easily tunable chains disulfide-rich backbones. High-strain stress waves subjected using laser-induced shock wave technique. A strong correlation is observed between capability glass transition temperature poly(disulfide)s. Furthermore, addition catalyst accelerate disulfide reaction improves dissipation. Leveraging inherent nature cyclic disulfides, exhibit self-healing chemical recycling monomers. The principles this provide rational framework designing sustainable efficient materials.

Language: Английский

Citations

2