Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 149179 - 149179
Published: Jan. 1, 2024
Language: Английский
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146536 - 146536
Published: Oct. 11, 2023
Language: Английский
Citations
65
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)
Published: April 22, 2024
Abstract Shape memory polymers (SMPs) have attracted significant attention and hold vast potential for diverse applications. Nevertheless, conventional SMPs suffer from notable shortcomings in terms of mechanical properties, environmental stability, energy density, significantly constraining their practical utility. Here, inspired by the structure muscle fibers, an innovative approach that involves precise incorporation subtle, permanent cross‐linking within a hierarchical hydrogen bonding supramolecular network is reported. This novel strategy has culminated development covalent shape polyurea, which exhibits exceptional including high stiffness (1347 MPa), strength (82.4 toughness (312.7 MJ m −3 ), ensuring its suitability wide range Furthermore, it boasts remarkable recyclability repairability, along with excellent resistance to moisture, heat, solvents. Moreover, polymer demonstrates outstanding effects characterized density (24.5 facilitated formation strain‐induced oriented nanostructures can store substantial amounts entropic energy. Simultaneously, maintains 96% fixity 99% recovery. delicate interplay bonds opens up promising pathway creation high‐performance SMPs, expanding applicability across various domains.
Language: Английский
Citations
59
Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(6), P. 804 - 811
Published: April 19, 2024
Language: Английский
Citations
51
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 473, P. 145423 - 145423
Published: Aug. 12, 2023
Language: Английский
Citations
49
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)
Published: May 17, 2024
Thermoset elastomers have been extensively applied in many fields because of their excellent mechanical strengths and durable characteristics, such as an chemical resistance. However, the context environmental issues, nonrecyclability thermosets has become a major barrier to further development these materials. Here, well-tailored strategy is reported solve this problem by introducing mismatched supramolecular interactions (MMSIs) into covalently cross-linked poly(urethane-urea) network with dynamic acylsemicarbazide moieties. The MMSIs significantly strengthen toughen thermoset elastomer effectively dissipating energy resisting external stress. In addition, recycling efficiency improved 2.7-fold due superior reversibility MMSIs. optimized features outstanding including ultrahigh tensile strength (110.8 MPa), unprecedented toughness (1245.2 MJ m
Language: Английский
Citations
46
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: May 2, 2024
Abstract The development of multifunctional bio‐adhesive plays a critical role in achieving sustainable society, where the intrinsic sensitivity to water and poor dynamics severely bottlenecks its scale‐up application. Inspired by microstructure dragonfly wings, strong tough adhesive with excellent reprocessability is designed developed creating dynamic network consisting lignin polyurea (LPU) framework soybean protein (SP). LPU act as rigid nervures slow crack propagation transfer stress, while SP dissipate strain energy through interplay from graded hydrogen imine bonds generated between SP. achieves significant enhancements fracture toughness resistance ≈7 23 folds, respectively, compared Furthermore, capacity for diffusion restoration endows superior reprocessability, enabling recycled particleboard achieve high retention modules (over 80%). This approach offers promising eco‐friendly alternative conventional petrochemical adhesive.
Language: Английский
Citations
37
Macromolecules, Journal Year: 2024, Volume and Issue: 57(5), P. 2100 - 2109
Published: Feb. 23, 2024
High-performance elastomers that possess a combination of high mechanical toughness and fast healability have garnered extensive interest because their diverse application potential. Inspired by the unique multiple hydrogen bond (H-bond) structure spider silk rapid dynamic exchange hindered urea bonds (HUBs), self-healing polyurea elastomer with ultrahigh was designed incorporating sextuple H-bonds HUBs into polymer chain. Such design affords stretchability (1586%), excellent (45.53 MJ m–3), good efficiency (91.6%), fracture energy (39.68 kJ m–2), recyclability. The performance are attributed to presence reversibly cross-linked noncovalent dynamically covalent HUBs, which been validated stress relaxation tests. Meanwhile, substituting chain extender adipic dihydrazide hexamethylenediamine, possesses comparable but fewer amide bonds, effect on confirmed. More importantly, when conductive layer graphene oxide applied surface resulting elastomer, exhibited potential applications in strain sensors.
Language: Английский
Citations
30
Progress in Polymer Science, Journal Year: 2024, Volume and Issue: 152, P. 101816 - 101816
Published: March 26, 2024
Permanent polymer networks present an important sustainability challenge. Irreversible covalent crosslinks impart these materials excellent mechanical properties, thermal and chemical resistance, yet also render them difficult to repair recycle. Self-healing mechanisms can extend the lifetime of thermosets elastomers, improving their durability making lifecycle more sustainable. In addition extension, this paper reviews self-healing polymers from a holistic point view. The entire is critically assessed with reference green chemistry principles sustainable development. relation between chemistries aspects each phases are discussed, starting feedstocks, monomer functionalisation synthesis, processing manufacturing as well end-of-life considerations, i.e. recycling or (bio)degradation. review provides toolbox for development thermosets, elastomers composites. It utmost importance consider materials, derived products – by extension any material product. ability often related recyclability should primarily reduce amount new that necessary fulfill societal needs, extending maximizing reprocessing into products. Increasing healing efficiency number cycles improves overall environmental impact relative extended service lifetime. Renewable resources biomass, processes waste streams be first choice create polymers. Finally, biodegradability considered complementary scenario upon accidental loss environment, provided biodegradation does not start under prospected use conditions products, but postponed until contact stimuli in environment.
Language: Английский
Citations
30
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)
Published: July 14, 2024
Carbon fiber (CF)-reinforced polymers (CFRPs) demonstrate potential for use in personal protective equipment. However, existing CFRPs are typically rigid, nonrecyclable, and lack of tearing resistance. In this study, flexible, recyclable, resistant polyurethane (PU)-CF composites fabricated through complexation reversibly cross-linked PU elastomer binders with CF fabrics. The PU-CF possess a high strength 767 MPa record-high fracture energy 2012 kJ m
Language: Английский
Citations
26
Materials Horizons, Journal Year: 2024, Volume and Issue: 11(9), P. 2191 - 2205
Published: Jan. 1, 2024
A healing liquid-free polyurethane-based ionic conductive elastomer (SS 50 DA –LiTFSI 80% ) with high mechanical properties and conductivity was synthesized by combining double dynamic covalent bonding non-covalent interactions.
Language: Английский
Citations
21