Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(22), P. 3724 - 3730
Published: Jan. 1, 2024
The UPy-rich polymers have been utilized to toughen and strengthen graphene oxide films through quadruple hydrogen-bonding, which offered a promising route for developing high-performance two-dimensional materials.
Language: Английский
Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 427 - 427
Published: Jan. 17, 2025
The degradation of rubber materials under environmental and mechanical stress presents a significant challenge, particularly due to UV (ultraviolet light) exposure, which severely impacts the material’s physical properties. This study aims enhance stability longevity by evaluating performance modified polyurethane silicone coatings as protective stabilizers. Natural rubber—styrene–butadiene (NR-SBR), known for its exceptional properties, was selected base material. To ensure strong adhesion, cold atmospheric plasma treatment applied, increasing surface energy 250%, primarily through an enhancement polar component. After treatment, supplier-recommended were applied tested adhesion using pull-out method. Aging tests water immersion, high temperatures conducted assess durability, with tensile used monitor changes over time. Coatings exhibiting cracking after exposure excluded from further analysis. A coating demonstrating superior moisture resistance durability extreme conditions identified promising candidate future stabilization applications. These findings provide foundation developing advanced significantly extend service life in demanding environments.
Language: Английский
Citations
1
ACS Macro Letters, Journal Year: 2025, Volume and Issue: unknown, P. 169 - 175
Published: Jan. 26, 2025
Stimuli-responsive polymers have demonstrated significant potential in the development of smart materials due to their capacity undergo targeted property changes response external physical or chemical stimuli. However, scales most existing stimuli-responsive polymer systems are mainly focused on three levels: functional units, chain conformations, topologies. Herein, we developed a covalent network (CPN) capable converting into supramolecular (SPN) within bulk directly at scale types. This transformation is enabled by specifically designed moieties that upon UV exposure reveal quadruple hydrogen bonding sites, allowing formation network. network-type transition from CPN SPN induces pronounced intrinsic material properties, including substantially increased breaking elongation, lower Young's modulus, reduced fracture strength, and decreased creep resistance, marking shift stable, rigid structure dynamic, adaptable one. These findings provide new insights design advanced through transformations, opening avenues for applications multifunctional materials.
Language: Английский
Citations
0
Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown
Published: March 4, 2025
Styrene–butadiene rubber (SBR), a widely employed synthetic elastomer, has found diverse applications, including transportation, sealing, and conveyor belts. Nevertheless, the conventional covalent cross-linking network inherently restricts its recyclability reprocessability, leading to substantial resource depletion considerable environmental degradation. Herein, we present an efficient strategy for fabrication of high-performance recyclable SBR materials based on ionic cluster interactions. The commercial is brominated establish dynamic networks with 4-(alkylamino)-pyridine (DMAP) under simple hot pressing condition. Owing electron-donating characteristics resonance-induced isomerization DMAP, obtained in this study attains markedly elevated tensile strength 12.0 MPa toughness 48.9 MJ/m3, both which outperform those sulfur-vulcanized SBR. Furthermore, developed exhibit outstanding reprocessability due their effective reversibility bromine-DMAP cross-linking, endowing good recyclability. This proposes methodology high-performance, elastomeric materials, paving promising path sustainable advancement industry.
Language: Английский
Citations
0
Science Advances, Journal Year: 2025, Volume and Issue: 11(10)
Published: March 7, 2025
Titanium carbide (Ti 3 C 2 T X ) MXene has prominent mechanical properties and electrical conductivity. However, fabricating high-performance macroscopic films is challenging, as weak interlayer interactions limit their performance. Here, we introduce [2]rotaxane, a mechanically interlocked molecule, to enhance films. Compared pure (fracture strain: 4.6%, toughness: 0.6 MJ/m ), [2]rotaxane-bridged (RBM) achieve record-high strain (20.0%) toughness (11.9 with only 3.6% [2]rotaxane by weight. Additionally, RBM endure 500 stretch cycles (0 15% strain) stable reversible resistance alterations, making them ideal for stretchable electrodes. Notably, enable electroluminescent devices reliable operation under 20% elongation customizable luminescent patterns. This innovative use of molecules cross-link platelets advances other two-dimensional materials in electronics.
Language: Английский
Citations
0
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Mechanically interlocked networks (MINs) with dense mechanical bonds can amplify the dynamic behaviors of to exhibit decent properties. Energy dissipation resulting from bond motion is essential for improving toughness, yet effective strategies optimize this process remain underexplored. Here, by designing models controllable mobility, we establish a fortification strategy two key factors governing energy dissipation, host–guest recognition and sliding friction, thereby enabling property enhancement mechanically materials. Specifically, [2]rotaxanes in MIN-1 MIN-2 identical axle structures, incorporating small benzo-21-crown-7 ring large benzo-24-crown-8 ring. Strain rate-dependent cyclic tensile tests reveal that required drive 510 260 kJ/m3, respectively, indicating wheel size enhances recognition. Furthermore, apparent activation (11.0 kJ/mol) higher than (6.70 kJ/mol), suggesting increased friction MIN-1. Due these aspects, exhibits superior performance (damping capacity = 92%) compared (78%), translating toughness (7.50 vs 5.70 MJ/m3).
Language: Английский
Citations
0
Macromolecules, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 25, 2024
Language: Английский
Citations
2
Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 21, 2024
Language: Английский
Citations
2
Chinese Journal of Polymer Science, Journal Year: 2024, Volume and Issue: 42(10), P. 1536 - 1544
Published: Aug. 20, 2024
Language: Английский
Citations
1
Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(22), P. 3724 - 3730
Published: Jan. 1, 2024
The UPy-rich polymers have been utilized to toughen and strengthen graphene oxide films through quadruple hydrogen-bonding, which offered a promising route for developing high-performance two-dimensional materials.
Language: Английский
Citations
1