CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yan-Mei Zhang,Li-Hao Xu,Xiao-Xue Hu,Bing-Hong Chen,Xin-Ru Chen,Qian-Qian Li,Heng Mao,Zhi-Ping Zhao
Metal-organic framework (MOF) membranes, by virtue of their high selectivity and low diffusion resistance, make a significant contribution to energy conservation and CO 2 emission reduction via separation technology. Despite possessing substantial potential for propelling the production of high-performance membranes, hurdles persist in the process of constructing MOF membranes that are both highly integrated and structurally sound on flexible polymer substrates. We propose a strategy for constructing highly stable cobalt zeolitic imidazolate framework (ZIF-67) composite membranes on seeded polyacrylonitrile (PAN) substrate. Through a timed-interrupted in-situ growth process, the amino-modified polycrystalline ZIF-67 as a CO 2 affinity layer is precisely and completely confined within the “top sites” and partial “face sites” of the vertical layered double hydroxide (LDH) precursor layer, creating a barrier-low passage for CO 2 as a fast diffusion layer. The substrate and the hybrid ZIF-67@LDH layer were robustly anchored together by the pre-embedded LDH seeds, thereby producing an appealing membrane-multilayer interlocked-support (MMIS) composite architecture. This fast diffusion-CO 2 affinity Pebax/ZIF-67@LDH/PAN membranes with MMIS architecture show average CO 2 permeability of 1487 Barrer and CO 2 /N 2 selectivity of above 55.1 after the surface repair coating of polyether-block-amide (Pebax), maintaining stable performance over 150 h, surpassing the Robeson upper bound. The Pebax/ZIF-67@LDH/PAN membranes also exhibit the durability and mechanical robustness, because of the highly inducible activity of LDH precursor layer serving as a linker between the membrane and substrate. These results promote the development of MOF-based membranes in practical separation applications.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Qing Zang,Xiang Gao,Juan Qiu,Min Yu,Zhaoyu Mao,Kangwei Gongsun,Chunchao Chen,Changming Bu,Houyi Ma
A nanometer-thick adenine (Ade/NaClO) film with interlocking structure was successfully prepared by regulating the micro-etching process of sodium hypochlorite and the adsorption process of adenine. Compared to single adenine film, the compactness, adhesion and anti-corrosion performance of Ade/NaClO film were obviously improved. Electrochemical tests demonstrated that the corrosion protection efficiency was improved from 85.8 % to 98.2 % and exhibited self-strengthen anti-corrosion performance. In-situ Raman spectroscopy indicated that the oxidative etching effect of NaClO played an important role in the formation of the film. The strategy proposed in this study exhibits guiding significance for improving the performance of conversion films on metal.
研究领域:
材料科学
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电化学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Pengpeng Lu,Xin Li,Jingyang Xu,Yong Fan,Jiyu Sun,Yunhong Liang,Limei Tian,Weihua Ming,Luquan Ren,Jie Zhao
The flexible protective coatings and substrates frequently exhibit unstable bonding in industrial applications. For strong interfacial adhesion of heterogeneous materials and long-lasting adhesion of flexible protective coatings even in harsh corrosive environments. Inspired by the interdigitated structures in Phloeodes diabolicus elytra, a straightforward magnetic molding technique is employed to create an interlocking microarray for reinforced heterogeneous assembly. Benefiting from this bio-inspired microarrays, the interlocking polydimethylsiloxane (PDMS) coating recorded a 270% improvement in tensile adhesion and a 520% increase in shear resistance, approaching the tensile limitation of PDMS. The elastic polyurethane-polyamide (PUPI) coating equipped with interlocking structures demonstrated a robust adhesion strength exceeding 10.8 MPa and is nearly unaffected by the corrosion immersion. In sharp contrast, its unmodified counterpart exhibited low initial adhesion and maintain ≈20% of its adhesion strength after 30 d of immersion. PUPI coating integrated with microarrays exhibits superior resistance to corrosion (30 d, |Z| 0.01HZ ≈10 10 Ω cm 2 , R ct ≈10 8 Ω cm 2 ), cavitation and long-term adhesion retention. These interlocking designs can also be adapted to curved surfaces by 3D printing and enhances heterogeneous assembly of non-bonded materials like polyvinylidene fluoride (PTFE) and PDMS. This bio-inspired interlocking structures offers a solution for durably bonding incompatible interfaces across varied engineering applications.
研究领域:
材料科学
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仿生学
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Gels
·
2022
·Vol. 8
·期 10
·625
·
IF 4.432
Wenyu Zhao,Zhuofan Lin,Xiaopu Wang,Ziya Wang,Zhenglong Sun
Hydrogels are stretchable ion conductors that can be used as strain sensors by transmitting strain-dependent electrical signals. However, hydrogels are susceptible to dehydration in the air, leading to a loss of flexibility and functions. Here, a simple and general strategy for encapsulating hydrogel with hydrophobic elastomer is proposed to realize excellent water-retention capacity. Elastomers, such as polydimethylsiloxanes (PDMS), whose hydrophobicity and dense crosslinking network can act as a barrier against water evaporation (lost 4.6 wt.% ± 0.57 in 24 h, 28 °C, and ≈30% humidity). To achieve strong adhesion between the hydrogel and elastomer, a porous structured thermoplastic polyurethane (TPU) is used at the hydrogel-elastomer interface to interlock the hydrogel and bond the elastomer simultaneously (the maximum interfacial toughness is over 1200 J/m2). In addition, a PDMS encapsulated ionic hydrogel strain sensor is proposed, demonstrating an excellent water-retention ability, superior mechanical performance, highly linear sensitivity (gauge factor = 2.21, at 100% strain), and robust interface. Various human motions were monitored, proving the effectiveness and practicability of the hydrogel-elastomer hybrid.Keywords:hydrogel-elastomer hybrid;interlocked interface;human motion monitoring
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Yeye Liu,Leilei Zhang,Fei Zhao,Chang Li,Hongchao Sheng,Hejun Li
Paper with simultaneous fire-resistance and hydrophobicity have greatly potential applications in the fields of packing, storage and delivering information, which attracts increasing attention recently. Different from the traditional cellulose-based paper which is extremely easily damaged by water and fire, a new type of highly flexible, fire-resistant and hydrophobic paper based on Si 3 N 4 nanowires and polydimethylsiloxane (PDMS) is reported. Specially, the Si 3 N 4 @PDMS core-shell nanowires with 3D interlocking structure are designed, in which the Si 3 N 4 nanowires act as the inorganic fire-resistant frameworks and the PDMS shell with low surface energy provides the hydrophobic surface . The Si 3 N 4 @PDMS core-shell nanowires are intertwined and interlaced to form a highly flexible Si 3 N 4 @PDMS paper. The tensile strength of Si 3 N 4 @PDMS paper is 6.19 MPa, indicating the good mechanical property. The obtained Si 3 N 4 @PDMS paper has the characteristics of writability, fire-resistance and hydrophobicity. The high thermal stability of Si 3 N 4 nanowires makes Si 3 N 4 @PDMS paper exhibit excellent fire resistance. No obvious change is observed for the commercial paper with Si 3 N 4 @PDMS paper as the fire-shielding layer after heating for 30 min. In addition, the contact angles of water droplets are all greater than 110° over the surfaces of Si 3 N 4 @PDMS paper after mechanical damages, chemical corrosions and thermal treatments. Si 3 N 4 @PDMS paper can be used in oil/water separation and oil collection. More importantly, Si 3 N 4 @PDMS paper can be used for writing without being damaged by fire or water. The present work may inspire the development and application of functional paper and is expected to become a breakthrough in the traditional paper industry.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Dengxun Ren,Xiaobo Liu,Mingzhen Xu,Xianzhong Tang
Iron phthalocyanine (FePc) with self-assemble properties was used to construct microstructures on carbon fiber (CF). Morphology, roughness and wettability of modified CF were characterized. Then, poly(arylene ether nitriles) (PEN) was chosen to fabricate CF reinforced composites and the interfacial compatibility of composites was investigated by SEM and their viscoelastic properties. Rheological properties including linear viscoelastic region, storage/loss modulus, and viscosity were investigated. Besides, dynamic mechanical properties of the composites were studied under different frequency and the apparent activation energy of glass transition was calculated. Results showed that using a proper PEN solution concentration to impregnate FePc microstructures modified CF could help to form better mechanical interlocking on interface. Besides, influence of shape, size and density microstructures on forming mechanical interlocking was studied and discussed. Results revealed that granule-like microstructures, reducing the size of microstructure, and decreasing the distance between microstructures were benefit to forming better mechanical interlocking on interface. Based on the researches, mechanism of improved interfacial compatibility through forming mechanical interlocking was proposed and the interlaminar shear strength (ILSS) of the composites were studied.
研究领域:
材料科学
·
复合材料
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hanpeng Gao,Siyu Chang,Yan Liu,Zong Meng,Zhiwu Han,Luquan Ren
Biomimetic surfaces that can manipulate droplets have attracted intense attention because of their application prospects in the fields of drug detection, cell sorting, bio-sensor, etc. Although many promising advances have been made, it is still a challenge to achieve lossless, no cross-contamination and on-demand controllable manipulation of underwater oil droplets without external energy input. Herein, SHI & SLIP interlaced wetting smart surfaces were fabricated by a simple strategy for manipulating underwater oil droplets. Depending on the switchable wettability and reasonable alternating wetting, the lubricant-infused area and superhydrophilic area can be on-demand controlled on the same surface. Numerical calculation and theoretical analysis reveal that the energy barrier between different interfaces is an important factor to realize underwater oil droplet manipulation. By the rational design of the interlaced wetting pattern, the capture, lossless transfer, fusion and directional transportation of underwater oil droplets were realized. Besides, the as-prepared surface has cross-contamination resistance, stable wettability and rewritability, which expands the application field and improves the potential value. We expect this work to open new avenues for flexible and controllable manipulation of underwater oil droplets and promote the development of smart microfluidic platform. It is also expected to be used in unpowered delivery systems, micro-reactions and energy transfer.
研究领域:
材料科学
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仿生学
·
微流控技术
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Yaqing Liu,Xiaoxiao Lv,Ying Song,Qi Ao,Bolei Yuan,Tingting Huang,Xinglai Tong,Jun Tang
Traditional hydrogel sensors containing MXenes as a conductive substrate will inevitably face the problem of excessive stacking of MXene nanosheets, which limits electron transport, thus reducing conductivity and sensitivity. Moreover, existing MXene hydrogels generally exhibit poor mechanical properties and fragility. In addition, it is necessary to prepare degradable electronic skins for reducing environmental pollution and recycling energy materials─MXene. How to find a balance between mechanical properties and degradation properties is a challenge. In this work, we overcome this challenge by combining a dynamic covalent strategy and establishing a self-modified interlocked structure. A biodegradable physically cross-linked hydrogel (OMDDH─ordered MXene dynamic degradable hydrogel) is constructed, and a highly interconnected three-dimensional (3D) MXene@CS-Pba network is prepared, thus endowing the sensor with excellent conductivity (24 × 10–4 S cm–1). For excellent mechanical properties, dynamic covalent interactions, hydrogen-bonding interactions between the dual networks, and chain entanglement of poly(vinyl alcohol) (PVA) totally build interlocked structures, thus endowing the hydrogel with excellent mechanical strength (1000 kPa). In an acidic environment, the dynamic covalent bond is broken, and the chain entanglement of PVA is also disentangled due to the disruption of the electrostatic equilibrium, resulting in the release of MXene for recycling (recycling conductivity: 22 × 10–4 S cm–1). Undoubtedly, we exhibit a strategy to construct ordered and degradable MXene hydrogels possessing excellent conductivity, high mechanical strength, and degradation performance, which lays the sensors’ wide applications in smart devices.
研究领域:
材料科学
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传感器技术
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环境科学
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2023
·Vol. 29
·期 59
·e202302132
·
IF 4.3
Jun-Tao Shi,Xian-Hui Chen,Yuan-Yuan Peng,Gui-Ping Wang,Guang-Yan Du,Quan Li
Graphical A novel mechanically bonded amphiphile (MBA)-bistable [2]rotaxane H2 was designed and prepared. In both the solution and aggregated states, H2 demonstrated pH-responsive emissions due to the presence of a distance-dependent photoinduced electron transfer (PET) process. Moreover, the morphology of H2 aggregates can be tuned from nanospheres to vesicles due to the pH-controlled shuttling motion-induced alternation of H2 amphiphilicity. Advanced Organic Chemical Materials Co-constructed Mechanically bonded amphiphiles (MBAs), also known as mechanically interlocked molecules (MIMs), have emerged as an important kind of functional building block for the construction of artificial molecular machines and soft materials. Herein, a novel MBA, i. e., bistable [2]rotaxane H2 was designed and synthesized. In the solution state, H2 demonstrated pH and metal ion-responsive emissions due to the presence of a distance-dependent photoinduced electron transfer (PET) process and the fluorescence resonance energy transfer (FRET) process, respectively. Importantly, the amphiphilic feature of H2 has endowed it with unique self-assembly capability, and nanospheres were obtained in a mixed H 2 O/CH 3 CN solvent. Moreover, the morphology of H2 aggregates can be tuned from nanospheres to vesicles due to the pH-controlled shuttling motion-induced alternation of H2 amphiphilicity. Interestingly, larger spheres with novel pearl-chain-like structures from H2 were observed after adding stoichiometric Zn 2+ . In particular, H2 shows pH-responsive emissions in its aggregation state, allowing the visualization of the shuttling movement by just naked eyes. It is assumed that the well-designed [2]rotaxane, and particularly the proposed concept of MBA shown here, will further enrich the families of MIMs, offering prospects for synthesizing more MIMs with novel assembly capabilities and bottom-up building dynamic smart materials with unprecedented functions.
研究领域:
有机化学
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材料科学
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超分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
·
2023
·
IF 3.4
Xin Gao,Jiayong Gao,Jiaqi Li,Gaozhe Liu,Heng Zhang,Xiaoning Tang,Lincai Peng,Keli Chen
The development of cellulose-substrate remedies remains a technological challenge owe to their inability to self-heal and excessive dependence on petroleum-based adhesives, which is further hindered by the significant drawbacks of commercially unavailable welding materials and inconvenient manipulation. We herein describe a cellulose-substrate bonding technique achieved through partial dissolution using a low dosage of ZnCl 2 aqueous solvent (ZS) and its dissolved cellulose (ZDC) gel as adhesives. This method demonstrates strong joint areas between strips without any failure, while shrinkage in the diffusion area remains the main cause of breakage. This shrinkage phenomenon can be alleviated by using ZDC instead of ZS, due to the water retention of hydrophilic hydroxyls on the macromolecular chains of dissolved cellulose . The well-maintained tensile strength of the ZDC-bonded strip (5.0% lower than the control) indicates that partially dissolved cellulose fills gaps between fibers, providing evidence for a mechanical interlocking adhesive mechanism in strip connections. ZDC gels exhibit favorable adhesive behavior for hand-sheets, art paper, and corrugated board, with welded joints demonstrating robust mechanical performance even after soaking in water for 6 h.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Research
·
2022
·
IF 11.036
Baoyi Wu,Yaoting Xue,Israt Ali,Huanhuan Lu,Yuming Yang,Xuxu Yang,Wei Lu,Yinfei Zheng,Tao Chen
Natural locomotion such as walking, crawling, and swimming relies on spatially controlled deformation of soft tissues, which could allow efficient interaction with the external environment. As one of the ideal candidates for biomimetic materials, hydrogels can exhibit versatile bionic morphings. However, it remains an enormous challenge to transfer these in situ deformations to locomotion, particularly above complex terrains. Herein, inspired by the crawling mode of inchworms, an isotropic hydrogel with thermoresponsiveness could evolve to an anisotropic hydrogel actuator via interfacial diffusion polymerization, further evolving to multisection structure and exhibiting adaptive deformation with diverse degrees of freedom. Therefore, a dynamic mortise-and-tenon interlock could be generated through the interaction between the self-deformation of the hydrogel actuator and rough terrains, inducing continual multidimensional locomotion on various artificial rough substrates and natural sandy terrain. Interestingly, benefiting from the powerful mechanical energy transfer capability, the crawlable hydrogel actuators could also be utilized as hydrogel motors to activate static cargos to overstep complex terrains, which exhibit the potential application of a biomimetic mechanical discoloration device. Therefore, we believe that this design principle and control strategy may be of potential interest to the field of deformable materials, soft robots, and biomimetic devices.
研究领域:
材料科学
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仿生学
·
软体机器人
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Shengping Dai,Jingping Yao,Longhua Zeng,Jinlong Shuai,Yan Zhong,Hongmei Chen,Cheng Liu,Wentong Chen,Yan Sui
High bonding strength and adhesion stability performance adhesives are essential for many fields, including electronic packaging, and interface bonding, etc. However, ultra-high and stable adhesion imposes higher requirements on the structure and properties of soft adhesives. Herein, A ultra-high adhesion, adhesion stability performance soft adhesive was developed by soft polyurethane foam. PuFA x (polyurethane foam adhesive) demonstrated outstanding flexibility (maximum compressive strength of 62.86 kPa), and ultra-high adhesion strength (up to 81.42 MPa for Cu). The gas generated by the physical foaming of PuFA x serves as an internal driving force, facilitating the formation of a mechanical interlocking structure between the polyurethane chains and the substrates. Thus, it forms a synergistic effect with chemical coupling, further enhancing the bonding strength. In terms of environmental adaptability, PuFA x exhibited excellent solvent-resistant adhesion stability performance under harsh conditions, including exposure to solvents such as DMSO, CH 2 Cl 2 , C 2 H 5 OH, HCl, NaOH, NaCl, and H 2 O. Furthermore, PuFA x demonstrated outstanding stable adhesion properties even in high-temperature aqueous solutions with a temperature as high as 100 °C and throughout a prolonged aging process that can extend up to 12 months. The design strategy of PuFA x provided a new way to develop an outstanding soft adhesive candidate with ultra-high and stable adhesion.
研究领域:
材料科学
·
化学工程
✓ 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）