Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 26
·9685-9692
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IF 5.7
Yanpeng Cao,Rui Yan,Xiaoye Wo,Jinlong Ma,Xiao Yu,Aijun Li,Jian Huang,Fenghua Li,Qixian Zhang
Owing to the demand for high sensitivity and lightweight flexible electronic devices, researchers have made efforts to develop wearable devices by integrating flexible electronic devices onto flexible and self-healing substrates. Developing self-healing materials with excellent self-healing efficiency and ultra-high mechanical performance at room temperature is very important. A new self-healing material was successfully synthesized as a high-strength polyurethane elastomer by introducing functional segments with different structural rigidities, including thiourea and oxime–urethane bonds. It was named 2,5-dithiobiurea–dimethylglyoxime–urethane complex-based polyurethane elastomer (DBTU–DOU–PU, hereinafter referred to as DDPU). The mechanical strength of DDPU can be restored to 5 MPa after repairing for 10 min at room temperature (25 ± 2 °C). After 72 h recovery, the tensile strength of DDPU is 65.4% of its initial value. The colorless and transparent DDPU material may have broad application prospects such as in electronic skin, human-computer intelligent interaction, and flexible self-healing sensors.
研究领域:
材料科学
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生物医学工程
·
高分子化学
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产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 4
·699
·
IF 4.967
Linlin Wang,Jie Zhou,Lei Li,Shengyu Feng
Supramolecular elastomers integrated with high mechanical toughness and excellent self-healing ability offer attractive applications in various fields such as biomedical materials and wearable electronics. However, the multistep preparation process for creating functional polymer precursors and the expensive stock materials required are two factors that limit the widespread use of supramolecular elastomers. Herein, for the first time, poly(β-hydroxyl amine)s generated by amine-epoxy polymerization were used in the development of supramolecular polymer materials. Based on the novel silicon-containing poly(β-hydroxyl amine)s synthesized by the polymerization between 1,3-bis(3-glycidyloxypropyl)tetramethyldisiloxane and 3-amino-1,2-propanediol, dually cross-linked supramolecular elastomers with both hydrogen bonding and metal coordination were achieved, displaying adjustable mechanical properties with the tensile strength varying from 0.70 MPa to 2.52 MPa, respectively. Thanks to the dynamic nature of the supramolecular interactions, these elastomers exhibited favorable hot-pressing reprocessability and excellent self-healing performance, with the healing efficiency reaching up to 98% at 60 °C for 48 h. Potential applications for photoluminescent materials and flexible electronic devices were demonstrated. We believe that its simplicity of synthesis, adjustable mechanical properties, and robust self-healing capacities bode well for future applications of this new supramolecular elastomer.Keywords:dual-cross-linked elastomer;supramolecular elastomer;poly(β-hydroxyl amine);self-healing
研究领域:
材料科学
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聚合物化学
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生物医学材料
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可穿戴电子
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产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2021
·Vol. 17
·期 17
·4643-4652
·
IF 3.679
Yuxing Shan,Shuai Liang,Xiangkai Mao,Jie Lu,Lili Liu,Yawen Huang,Junxiao Yang
Stretchable elastomers with superhydrophobic surfaces have potential applications in wearable electronics. However, various types of damage inevitably occur on these elastomers in actual application, resulting in the deterioration of the superhydrophobic properties. In this work, superhydrophobic elastomers (HB-imine-BZn-PDMS), was fabricated by employing a dual-layered structure. The bottom layer was a silicon elastomer (imine-BZn-PDMS) with an imine/coordination dual cross-linked structure and room temperature self-healing efficiency of 94%. The top layer was imine-BZn-PDMS/silica nanocomposites to provide superhydrophobic properties. The HB-imine-BZn-PDMS elastomer exhibited fast triple self-healing ability at room temperature toward surface oxidation/decomposition, ruptures, or pinholes, and high durability under abrasion and stretching. The dual dynamic bonds of imine-BZn-PDMS enabled fast recovery of superhydrophobicity in 20 min at room temperature via bond exchange, after generating pinholes across the elastomer. Following surface chemical damage, the HB-imine-BZn-PDMS elastomer also exhibited fast (40 min) room-temperature self-healing ability, which is superior to that of most current self-healing superhydrophobic materials.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiwei Guo,Ronan Brown,Yue Dong,Haoyu Feng,Yang Xiang,Dongxu Wang,Qi Zhang,He Zhu,Shiping Zhu
Elastomers are essential for a variety of demanding applications, but their performance is significantly compromised under harsh conditions, such as extremely low temperatures and serious aging. Herein, a novel polyurethane elastomer (PFTA) is presented, having perfluoropolyether as the soft segment and catechol-containing molecules synthesized via Schiff base reaction as the chain extender, where the perfluoropolyether segments confer outstanding low-temperature and solvent resistance and the catechol groups provide exceptional anti-aging properties to the material. As a result, the obtained elastomer achieves an ultralow glass transition temperature of approximately −115 °C, demonstrating remarkable flexibility at extremely low temperatures, even in a liquid nitrogen environment, and possesses good aging and solvent resistance. These results highlight that the combination of catechol functionalization and perfluoropolyether segments provides a promising platform for the development of elastomers suitable for extreme environmental applications, such as aerospace and polar exploration.
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
Soft Matter
·
2024
·Vol. 20
·期 22
·4402-4413
·
IF 2.9
Xinglinmao Li,Wen Li,Jia Cheng,Xiao Sun,Yue Zhang,Chunping Xiang,Shougang Chen
Determining the fatigue threshold of elastomers is particularly important to predict their durability and lifespan. However, there has been almost no effective approach to calculate this threshold fast and accurately so far. To realize rapid fatigue performance testing, in this paper, a new method is proposed to calculate the fatigue threshold through the elastic limit strain point of elastomers that can be obtained from the continuous Mullins test. Compared with the traditional binary method to predict fatigue threshold, this method significantly reduces the time required for fatigue testing of elastomers, which can save approximately 2–3 sampling points in the fatigue test, i.e. a time savings of around 40%. Our method also proved to be effective for the elastomers at 0 °C. Additionally, a dual-network elastomer was synthesized using the interpenetrating network method, exhibiting improved elasticity (2.1 MPa and 3.1 MPa), toughness (1423 J m−2 and 2100 J m−2), and higher fatigue threshold (125 J m−2 and 385 J m−2) at 0 °C and room temperature. This material presents great application potential in marine anti-fouling.
研究领域:
材料科学
·
力学
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Wenjun Chen,Sheng Yang,Sanyu Qian,Shijun Long,Xinghou Gong,Xuefeng Li,Yiwan Huang
Elastomers are vital for applications demanding flexibility and resilience, yet an inherent trade-off between strength and toughness generally exists in conventional systems. Here, we present a facile strategy to fabricate robust poly(acrylic acid) (PAA)-based hydroelastomers by synergizing osmotic pressure and dynamic metal-coordination bonding. In the design, a slightly crosslinked PAA hydrogel is immersed in a concentrated FeCl 3 solution, where external osmotic pressure rapidly dehydrates the network, achieving ultrahigh polymer chain density. Concurrently, Fe 3+ ions penetrate the matrix, forming dynamic –COO − •••Fe 3+ coordination bonds that enhance energy dissipation and cohesion. Systematic studies are carried out to understand the effects of metal-ion concentration and monomer concentration on the mechanical properties of the hydroelastomers. The resulting hydroelastomers retain ≈10 wt.% water, enabling flexibility while exhibiting unprecedented mechanical properties: Young's modulus >100 MPa, tensile strength >9 MPa, work of extension >38 MJ m −3 , fracture energy >35000 J m −2 , and elongation at break >400%, alongside optical transparency. These properties surpass those of many commercial elastomers (e.g., PDMS, natural rubber). Furthermore, the hydroelastomers demonstrate reversible softening upon rehydration, facilitating stimuli-responsive applications. This work offers a simple yet effective strategy for designing and fabricating robust elastomers that harmonize strength, toughness, and elasticity.
研究领域:
材料科学
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高分子科学
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机械工程
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化学工程
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 18
·10932-10938
·
IF 3.119
Yunfei Chang,Mingyi Liao,Xueyan Li
Using a simple one-pot method, the reduction of liquid terminated-carboxyl fluoroelastomers (LTCFs) by sodium borohydride and samarium chloride (NaBH4/SmCl3) was successfully realized and liquid terminated-hydroxyl fluoroelastomers (LTHFs) were obtained. The structure and functional group content of LTCFs and LTHFs were analyzed by FTIR, 1H-NMR, 19F-NMR and chemical titration. The results showed that –CC– and carboxyl groups of LTCFs were reduced efficiently, the reduction rate reached 92% under optimum reaction conditions. Compared with other frequently-used metal chlorides, SmCl3 with a high coordination number could increase the reduction activity of NaBH4 more effectively and the reduction mechanism was explored.
研究领域:
材料化学
·
有机化学
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Jing Hu,Gege Lv,Nanying Ning,Bing Yu,Ming Tian,Liqun Zhang
Comfort fitting shape memory elastomer exhibits various potential application in flexible wearable and biomedical devices, which can be developed by mixing the comfort fitting elastomer with the materials of reversible transition. However, it's very difficult to obtain the soft touching feeling, high elongation, and excellent shape memory property at the same time, and the key point mainly depends on improving interface stability and adjusting the morphology by the compatibilizer . In the work, silicone elastomer with excellent shape memory property was obtained by developing an amphiphilic PCL-JP-PDMS hybrid Janus particles compatibilizer for methyl vinyl silicone elastomer/polycaprolactone (MVQ/PCL) blend. Only through increasing the PDMS grafting ratio on the PCL-JP-PDMS particles compatibilizer, the morphology of PCL dispersed phase changed from short fibrous to similar spherical, which ensured the comfort feeling (E = 5.9 MPa), high fixity (R f = 95%) and recovery ratio (R r = 99%) of shape memory MVQ/PCL blends. Furthermore, the shape memory silicone elastomer exhibited impressive elasticity in temporary shape at T = 25 °C, which is quite suitable for designing wearable device.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Jiayu Tian,Chuanqian Shi,Guohua Nie,Chenzhe Li,Ying Zhao
Achieving programmable morphing in 3D-to-3D shapes of soft actuators based on liquid crystal elastomer (LCE), particularly those with multimodal transformations and non-zero Gaussian curvature, remains a significant challenge. Here, a facile strategy is presented to create 3D LCE-elastomer (LCE-Ela) bilayer structures capable of customizable and programmable 3D-to-3D shape transformations, generating reversible and multimodal morphologies with nonzero Gaussian curvature. By combining two types of mismatch strains—pre-stretch and thermal strains—in LCE-Ela bilayer, the approach enables hierarchical multimodal transformations: starting from a 2D initial configuration, programmable transformations enable the formation of complex 3D structures, which can subsequently transition into other 3D shapes following predefined programs, with each step of the hierarchical process allowing multimodal deformations to generate diverse structural morphologies. Experimental and computational demonstrations include over 30 diverse 3D LCE-Ela configurations, the majority of which exhibit nonzero Gaussian curvature. Moreover, biomimetic LCE-Ela structures—including a chameleon, butterfly, spider, and leaf—demonstrate vivid deformation and discoloration, showcasing their potential for applications such as information encryption, camouflage, and adaptive devices. This work provides a facile approach to generate customizable 3D-to-3D transformations with complex geometries, broadening the application scope of LCE-based technologies in 3D soft actuators.
研究领域:
材料科学
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软体机器人
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智能材料
·
高分子科学
·
机械工程
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仿生学
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应用物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULES
·
2025
·
IF 5.2
Meijia Gong,Luping Wang,Kaiyang Hou,Kaiqiang Zhang,Xu Wang
Optimizing supramolecular interactions is crucial for enhancing the damage resistance of elastomers under extreme mechanical stresses. However, the underlying mechanisms remain not fully understood, making targeted design challenging. This study thoroughly investigates a series of polyurethane elastomers and presents a strategy to enhance elastomer damage resistance by tuning the number and strength of hydrogen bonds at the hard–soft interface. Within these elastomers, we find that the hardness is positively correlated with the number and strength of hydrogen bonds, while toughness increases with the number of hydrogen bonds, reaching a maximum at moderate bond strength. Elastomers with both high hardness and toughness demonstrate superior impact resistance, while the best tear resistance is achieved with moderate hardness and high toughness. By balancing hydrogen bond acceptors in the soft segment with donors in the hard segment, an elastomer with an exceptional impact strength of 9.2 MJ m–2 is obtained, and tear resistance of 275.0 kJ m–2 is achieved by modulating the interaction strength. This research clarifies structural factors influencing damage resistance, including the number and strength of hydrogen bonds at the hard–soft interface, offering valuable insights for the design of highly impact- and tear-resistant elastomers.
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
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 7
·2688-2694
·
IF 6.4
Shengping Dai,Hongwei Hu,Yixin Zhang,Jiang Xu,Yan Zhong,Guanggui Cheng,Jianning Ding
The hydrophobic encapsulation method is one of the common methods to ensure the regular operation of electronics under water. However, the hydrogel underwater sensors prepared by hydrophobic encapsulation still suffer from weak interfacial bonding. Here, we developed a high toughness and low hysteresis, dual-physically cross-linked structure hydrogel that was hydrophobically regulated by an MXene. The introduction of an MXene into the hydrogel can not only enhance the conductivity as a conductive filler, but also improve the mechanical properties as a physical cross-linking point. At the same time, the hydrophobic fluorine groups of the MXene can regulate the hydrophobic properties and enhance the bonding strength with the hydrophobic layer. In this way, a hydrophobic encapsulation structure hydrogel–elastomer hybrid was constructed, which showed a maximum bonding strength of 34.19 ± 1 N m−1, and excellent anti-drying (7d, ≤5.5%), and anti-swelling (7d, ≤0.07) properties. Furthermore, the core–shell structure hybrid fiber sensor exhibited excellent conductivity, sensitivity, and long-term stability performance in harsh environments, such as underwater, acid (pH = 1), alkali (pH = 14), salt solution (1 M NaCl), and alcohol solution. It provides a reliable opportunity for underwater smart wearable sensors using hydrogels with high flexibility.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Ruolin Wang,Yufeng Liang,Jingcheng Xiao,Dongjing Gao,Yongping Bai,Jinmei He,Yifan Wang
Dielectric elastomers (DEs) function as deformable capacitors capable of generating mechanical work under an applied electric field. Despite their promise, the practical deployment of dielectric elastomer actuators (DEAs) is limited by challenges in scalable fabrication and achieving high mechanical output. In this work, a high-performance, reversibly crosslinkable DE is presented based on a tailored polysiloxane network. By optimizing ratio of short- and long-chain segments, the elastomer exhibits enhanced electromechanical performance, achieving a maximum areal strain of 19.09% at 18 kV mm −1 without the need for prestretching—outperforming conventional DE materials. Furthermore, an efficient, scalable, and high-yield dry stacking process that is introduced, enables the fabrication of multilayer actuators while maintaining the superior performance of single-layer films. As a demonstration, a lightweight soft gripper based on this actuator effectively manipulates complex and delicate objects, lifting loads up to 500 times its own weight using a combination of electroadhesion and dielectric actuation. These results highlight the potential of this dielectric elastomer for advancing soft robotics and next-generation flexible actuators technologies.
研究领域:
柔性机器人
·
材料科学
·
高分子科学
·
机电学
·
柔性电子学
✓ 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）