ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Lan Zhao,Fengcai Lin,Haijun Li,Lingling Qian,Yingshan Shi,Zhiyi Cao,Xuan Yang,Biao Huang,Beili Lu,Hanyang Liu,Jianhua Lv,Xinda You,Lirong Tang
Dissipative smart binders hold great potential for flexible electronics and energy storage, but achieving synergistic regulation between energy dissipation and structural reinforcement remains challenging, particularly in balancing high strength, tunable toughness, and multifunctional integration. Here, a dissipative smart binder with a dual-channel responsive mechanism is developed to enable dynamic regulation of energy dissipation and rigidity enhancement through the synergistic effects of slip relaxation and conformational locking. Centered on Fe 2 ⁺/Fe 3 ⁺ dynamic coordination, the binder incorporates control via the intricate and rigid rosin architecture and a hierarchy of distinct bonding mechanisms, thereby enhancing its capacity for both rapid energy dissipation and strain-triggered reinforcement. Sodium alginate serves as a continuous phase framework, reinforced by phosphorylated cellulose nanocrystals, conformation-locking segments of acrylic acid rosin, and a multivalent coordination network that enables this strain-triggered state transformation. The binder exhibits a soft-to-rigid transition with a strain-rate-sensitive hardening effect, increasing modulus up to 98 000 times and fracture energy from 104.51 to 272.34 MJ m −3 . Applied in silicon anodes, it maintains 2476.5 mA h g −1 after 100 cycles at 0.2C, with ionic conductivity reaching 25.240 mS cm −1 , an eightfold increase over the unmodified system. The composite network effectively mitigates structural degradation, binder fatigue, and interfacial instability caused by silicon volume expansion.
研究领域:
材料科学
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电化学储能
·
高分子化学
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纳米复合材料
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柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 3
·724
·
IF 5
Genxin Chen,Sijie Tang,Honghan Yan,Xiongbin Zhu,Huimin Wang,Liya Ma,Kang Mao,Changying Yang,Jiabing Ran
Currently, hydrogels simultaneously featuring high strength, high toughness, superior recoverability, and benign anti-fatigue properties have demonstrated great application potential in broad fields; thus, great efforts have been made by researchers to develop satisfactory hydrogels. Inspired by the double network (DN)-like theory, we previously reported a novel high-strength/high-toughness hydrogel which had two consecutive energy-dissipation systems, namely, the unzipping of coordinate bonds and the dissociation of the crystalline network. However, this structural design greatly damaged its stretchability, toughness recoverability, shape recoverability, and anti-fatigue capability. Thus, we realized that a soft/ductile matrix is indispensable for an advanced strong tough hydrogel. On basis of our previous work, we herein reported a modified energy-dissipation model, namely, a “binary DN-like structure” for strong tough hydrogel design for the first time. This structural model comprises three interpenetrated polymer networks: a covalent/ionic dually crosslinked tightened polymer network (stiff, first order network), a constrictive crystalline polymer network (sub-stiff, second order network), and a ductile/flexible polymer network (soft, third order network). We hypothesized that under low tension, the first order network served as the sacrificing phase through decoordination of ionic crosslinks, while the second order and third order networks together functioned as the elastic matrix phase; under high tension, the second order network worked as the energy dissipation phase (ionic crosslinks have been destroyed at the time), while the third order network played the role of the elastic matrix phase. Owing to the “binary DN-like” structure, the as-prepared hydrogel, in principle, should demonstrate enhanced energy dissipation capability, toughness/shape recoverability, and anti-fatigue/anti-tearing capability. Finally, through a series of characterizations, the unique “binary DN-like” structure was proved to fit well with our initial theoretical assumption. Moreover, compared to other energy-dissipation models, this structural design showed a significant advantage regarding comprehensive properties. Therefore, we think this design philosophy would inspire the development of advanced strong tough hydrogel in the future.Keywords:double-network;hydrogel;toughness
研究领域:
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Guo-Juan Wang,Qiang-Qiang Zhu,Gan-Yu Cai,Yue Zhai,Shuang-Qiang Fang,Juan Kang,Le Wang
The realization of high-quality laser-driven white light remains challenging due to the limited heat dispersion and inconsistent light uniformity of color converters. In this study, ZnO particles with high thermal conductivity and a high index of refraction were induced into phosphor-in-glass (PiG) films to form a Y 3 Al 5 O 12 (YAG):Ce 3+ -ZnO composite structure. The influences of ZnO particles on the luminescence, optical properties, thermal dissipation performance, and light uniformity of PiG films were studied in detail. Benefiting from the improved thermal dissipation, the luminescence saturation threshold of the YAG:Ce 3+ PiG film was improved from 10.97 to 12.96 W/mm 2 , and the luminous flux was improved from 1271 to 1468 lm. The increased light scattering attributed to ZnO particles also effectively dispersed both laser and emitted light. This significantly enhanced the angular consistency of the color rendering index (Ra) and correlated color temperature (CCT). It indicates that the YAG:Ce 3+ -ZnO composite PiG film would be an interesting color converter for producing high-quality laser-driven white light.
研究领域:
材料科学
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光学工程
·
发光材料
✓ 已验证
产品关联
DOI
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2025
·Vol. 122
·期 15
·e2417978122
·
IF 9.1
Jiayu Wang,Shilong Zhang,Lingling Li,Xiaoliang Wang,Jiaofeng Xiong,Qingning Li,Weizheng Li,Feng Yan
Solvents within gels enhance the mobility of polymer chain segments while concurrently diminishing interchain interactions, thereby facilitating the ductility of glassy polymers at the cost of their mechanical strength. Here, we develop a solvent toughening strategy for the preparation of highly compressible and high-strength ionogels in the glassy state. This approach leverages the synergistic effects of the slow dissociation-shift kinetics of solvent ionic liquids and polymer crystallization. Ionogels exhibit an ultimate compressive stress of 2.3 GPa (at 98% compressive strain), toughness of 1219.3 MJ m−3, and energy dissipation rate of 81.9% (at 70% compression strain). The highly interacting ionic bonds of solvent and the fast crystallization of polymers under load toughen the ionogels and confer impact hardening and efficient energy dissipation behavior under fast impact. A 500-μm-thick ionogel coating can protect fragile items, such as glass, from impact damage. Ionogels, renowned for their impact resistance, hold promise for various applications across industries including human body implants, equipment, transportation, and aerospace.
研究领域:
材料科学
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力学
·
工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2022
·
IF 5.6
Wenjun He,Gang Chen,Chao Li,Xiaohong Chen,Yaowei Chen,Mengyuan Xiong,Xinsheng Niu,Ming Zhu,Xiaoyan Li
The miniaturization and integration of next-generation electronic devices are accompanied by a substantial increase in electromagnetic interference (EMI) and heat generation, which requires light and thin EMI shielding materials. Herein, we attempt to tackle this challenge by designing a heterogeneous membrane using carbon nanotubes (CNTs) and magnetite (Fe 3 O 4 ) nanorods. The polymer-coated Fe 3 O 4 uniformly adsorbs on the surface of the polyaniline (PANi) coated CNTs, forming a self-supporting composite membrane with vertical CNTs under a magnetic field. Due to the entanglement of the CNTs, the vertical alignment is more effective in the top region of the membrane than in the bottom, resulting in an asymmetric structure that is beneficial to EMI absorption. When electromagnetic waves are incident from the top surface, high-absorption electromagnetic shielding is obtained due to multiple attenuations and absorption-reflection losses. The vertical orientation and heterogeneous CNTs network structure of the membrane also enable stable heat dissipation.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Che Zhao,Yuxuan Zeng,Yuhan Zhou,Tianyu Wu,Meng Song,Lei Duan,Jiamei Dong,Yanlong Luo
Cross-linked polymeric damping materials with efficient energy dissipation mechanisms have attracted significant attention in impact protection applications. However, conventional viscoelastic damping materials frequently encounter limitations in processability and operational durability. Herein, a novel high-dielectric CaCu 3 Ti 4 O 12 /poly(lipoic acid) dynamic covalent network composite was introduced. This advanced material demonstrated an exceptional self-healing efficiency of 89.7% after 24 h at ambient temperature and remarkable reprocessability through thermally activated bond exchange reactions. Upon damage, the material's mechanical strength and integrity can be restored via the reformation of cross-linking points within the polymer network, thereby extending its operational lifespan. Notably, the synergistic combination of interfacial polarization effects from CaCu 3 Ti 4 O 12 particles and the dynamic equilibrium of coordination bonds establishes multiple energy dissipation pathways. This unique architecture achieves broadband damping performance with loss factors (tan δ) exceeding 0.3 across an extended frequency spectrum (0.009–100 Hz), coupled with a substantial enhancement in dielectric constant. The energy dissipation capability was verified through a steel ball rebound experiment, which demonstrated an exceptionally low rebound rate of 3.0%. This research offers an innovative design concept for developing sustainable impact-resistant materials. Highlights A novel high-dielectric self-healing CaCu 3 Ti 4 O 12 /poly(lipoic acid) damping material was successfully synthesized. The CaCu 3 Ti 4 O 12 /poly(lipoic acid) films exhibit outstanding self-healing ability and reprocessability. The CaCu 3 Ti 4 O 12 /poly(lipoic acid) composites achieve a superior impact resistance and a significantly elevated dielectric constant.
研究领域:
材料科学
·
高分子化学
·
力学
✓ 已验证
产品关联
DOI
高影响因子
Extreme Mechanics Letters
·
2021
·
IF 4.567
Qi Li,Ping Zhang,Canhui Yang,Huiling Duan,Wei Hong
On-demand adhere to and detach from soft and wet surfaces are crucial for hydrogels for applications in tissue engineering , soft machines, and soft robotics. Whereas strong adhesion has been achieved between hydrogels, on-demand switching from strong adhesion to weak adhesion for benign detachment is still under explorations. Herein, we report an approach for switchable adhesion between hydrogels by invoking a mechanical process, wrinkling. The approach is demonstrated by bonding two hydrogel adherends with a wrinkled hydrogel adhesive , with the formation and characterizations of wrinkles tailored by regulating the prestretch of adherend and optimizing the ingredients of adhesive synergistically. On one hand, the formation of wrinkles enhances adhesion by creating a tortuous path for crack propagation and an extended energy dissipation zone. The resulting adhesion is robust to elicit bulk dissipation within the adherend and transform the once adhesive failure to cohesive failure . On the other hand, the suppression of wrinkles deactivates the adhesion enhancement mechanism to facilitate effortless debonding. As a proof-of-concept, a hydrogel patch that can strongly adhere to a damaged hydrogel device for repair and gently detach after repairing, based on the switchable hydrogel adhesion, is demonstrated. The proposed method expands the design space for hydrogel adhesion.
研究领域:
生物医学工程
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材料科学
·
组织工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
·
2021
·
IF 5.584
Shengna Liu,Liancun Zheng
The classical constitutive equations for heat transfer of non-Newtonian fluids in shear flow fields neglect viscous dissipation and the field synergistic properties of rheology and heat transfer. In this paper, a novel constitutive Eq. (6) for rheological synergy thermal conductivity was derived by considering viscous dissipation. Based on this, we established an experimental platform to investigate the heat transfer properties of HEC-based silicon dioxide nanofluids (different nanoparticle sizes and volume fractions) in shear flow field for two cases: neglecting viscous dissipation and considering viscous dissipation. The results show that viscous dissipation have very important effects on heat transfer behavior at different shear rates and rheological properties. The contribution of viscous dissipation to the thermal conductivity increases with shear rate and particle volume fraction, but decreases with temperature. Among all the measured results, the maximum contribution of viscous dissipation to the thermal conductivity reached 19.86%. This confirms that the viscous dissipation is not negligible and the field synergy between rheology and heat transfer of non-Newtonian fluids must be considered in the shear flow fields.
研究领域:
热力学
·
流体力学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yang He,Feng Zhou,Yingxi Zhang,Tuan Lv,Paul K. Chu,Kaifu Huo
Silicon (Si) is a promising anode material for next-generation lithium-ion batteries (LIBs), but the huge volume change of Si particles causes anode fracture and delamination from the current collector, thereby stifling practical implementation. Herein, a high-toughness and hierarchical stress-dissipating binder for Si anodes is prepared by the covalent and hydrogen bonding of poly(acrylic acid) (PAA) and a cross-linked polyurethane (CPU). The physicochemical dual-cross-linked CPU-PAA binder with high toughness, large tensile strength, and hierarchical stress dissipation improves the structural integrity of Si anodes and minimizes thickness swelling. Finite element analysis confirms that the CPU-PAA binder reduces and uniformizes the stress distribution within the Si anodes during cycling. As a result, the Si/CPU-PAA anode shows a high capacity retention of 82.3% after 150 cycles at a high current density of 5 A g–1. Moreover, the Si/CPU-PAA//LiNi0.5Co0.2Mn0.3O2 full cell delivers stable cycling performance, highlighting the great potential of the CPU-PAA binder in high-energy-density LIBs. This work provides insights into the design of high-strength, large-toughness, and efficient stress-dissipating binders for high-performance Si anodes.
研究领域:
材料科学
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2019
·
IF 4.046
Mingzhou Su,Qiaoling Zhou,Huimeng Wang
Foamed steel applications in civil engineering are at their beginning stage. Compared to foamed aluminum, advantages of using steel as a base metal are distinct (e.g., higher strength and modulus). In order to investigate the mechanical properties of foamed steels and to obtain representative material constitutive parameters for finite element analysis, fourteen specimens were tested under monotonic and eleven different cyclic loading schemes in this study. The monotonic and cyclic tensile-to-yield ratios were 2.17 and 1.90 ± 0.17, respectively, and the energy dissipation coefficient ranged from 2.70 to 3.35. The cyclic hardening behavior of foamed steels comprised isotropic and kinematic hardening characteristics, and the isotropic part played the dominate role. Based on the test results, the corresponding material parameters for two cyclic constitutive models, including the Chaboche model and the Giuffré-Menegotto-Pinto model were obtained. Then, the accuracy of the parameters was verified by nonlinear analysis results in ABAQUS and OpenSEES. This work may provide a valuable reference for further research into the cyclic characteristics of foamed steels.
研究领域:
土木工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 40
·49206
·
IF 2.52
Guodian Zhu,Di Xiong,Jiao Ding,Tao Ruan,Guoqiang Yin
Flow mark phenomenon is one of the typical and common surface defects that affect industrial desired surface and long-life mechanical properties of the injection molding of polypropylene (PP). The effect of in-situ grafted polyolefin elastomer (POE) on the flow marks on injection molding of PP was investigated by combining experimental methods with dissipative particle dynamics (DPD) simulations. It was found that 1,6-hexanediol diacrylate-grafted POE (POE- g -HD) facilitated the reduction of the flow marks under an optimized grafting condition, a screw speed of 250 rpm at 185°C. The DPD simulations indicated that the reduction of the flow marks via POE- g -HD was related to the emergence of POE- g -HD quasi-clusters. In addition, increasing melt strength of PP resulted in a melt fracture phenomenon and an increase of the flow marks. The limiting grafting degree of POE led to a finite reduction of the flow marks.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Xiaojian Wei,Yong Zhang,Hongzheng Zhu,Ming Yang,Jinbo Zhu
Using a high-speed motion acquisition system, the dodecane droplet size and the interface energy of the dodecane-solution interface during the collision between the dodecane droplet and the dodecane layer at different Na + concentrations were studied. The collision process is divided into three stages: Contact stage , Stretch stage and Attenuation amplitude stage . The size of the dodecane droplet gradually decreases as the Na + concentration increases, and the stretching time does too. The kinetic energy of the dodecane droplet, the surface energy of the dodecane-solution interface, and the net force of the dodecane droplet all decrease with an increase in Na + concentration, but the dodecane droplet rate of energy dissipation increases. The effect of Na + concentration on dodecane-solution interfacial tension is the main reason for the collision difference. The Na + added to the solution forms a hydration shell around it, weakening the interaction between water molecules at the dodecane-solution interface and within the solution, leading to reduced interfacial tension. The advancement of mineral flotation technology may benefit greatly from these findings.
研究领域:
化学工程
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）