COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Xiao Han,Jia-Horng Lin,Xia-Yun Zhang,Hao-Kai Peng,Li-Yan Liu,Lu Zhang,Ching-Wen Lou,Bing-Chiuan Shiu,Ting-Ting Li
To solve the problem of soft composites with both high puncture resistance and rapid self-healing. First, we used Pluronic F127 bisacrylate (PF127DA) as a micellar cross-linker, titanium dioxide (TiO 2 ) as a nanoparticle cross-linker, and acrylic acid-2-methoxyethyl ester (MEA) and N,N'-dimethylacrylamide (DMAA) as monomers to prepare nanocomposite gels (PMD/TiO 2 gel). On this basis, the soft composites were prepared by combining them with aramid fabrics. The results showed that the soft composites exhibited excellent fabric reinforcement and rapid self-healing properties, in which the force values for the spike and knife stabs are 242 N and 208 N, respectively, and the self-healing efficiency of the spike stab resistance is as high as 50 % and the self-healing efficiency of the knife stab is as high as 37 % after 80 min at 120 °C. In conclusion, this paper provides important guidance for the design of soft composites with high puncture resistance and fast self-healing capability.
研究领域:
材料科学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Qianwen Zhang,Weiqing Zheng,Lingqin Cai,Jia Wan,Yongzhi Liang
Conductive hydrogels have garnered extensive attention in flexible sensing technologies due to their unique combination of mechanical compliance and electrical conductivity. However, conventional systems face a critical limitation that the inability to synergistically integrate optical transparency, balanced mechanical/electrical properties, fast self-recovery, and anti-freezing property, thereby constraining their advanced applications. This study explores a facile “one-step” strategy to engineer a poly (acrylic acid)-Zr 4+ /trehalose hydrogel, where biologically derived trehalose serves dual roles as both a cryoprotectant (enabling -45 °C operability) and mechanical toughener. The Zr 4+ -enabled ionic coordination network simultaneously establishes a stiff structured matrix, yielding multifunctionality such as high transparency (up to 92 %), robust mechanical performance (2.86 MPa tensile strength, 1542 % strain, 11.2 MJ/m 3 toughness), high ionic conductivity (32.1 mS/cm), and rapid autonomous recovery (99.6 % efficiency within 10 min). Notably, we developed an innovative ultrafast healing mechanism achieving 79.2 % healing efficiency in just 1 min, overcoming the time-dependent limitations of conventional dynamic networks, ensuring durability under cyclic mechanical stress. This systemic integration of previously incompatible properties positions the hydrogel as a candidate for multifunctional flexible sensors, particularly in extreme environments where traditional systems fail. Its high ionic conductivity and subzero resilience enable reliable sensing in extreme environments, while sensitive strain/pressure detection ensures precise monitoring of subtle motions. The synergy between anti-freezing capability of trehalose and dynamic network of zirconium addresses critical challenges in wearable sensors, combining durability, environmental adaptability, and signal fidelity.
研究领域:
生物材料
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柔性电子
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生物医学工程
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可穿戴传感器
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高分子化学
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力学-电学耦合材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Manyuan Xu,Xiujuan Wei,Ziqiao Yan,Jinqiu Huang,Shuxing Wu,Kai-Hang Ye,Zhan Lin
Silicon oxide-based (SiOx-based) materials show great promise as anodes for high-energy lithium-ion batteries due to their high specific capacity. However, their practical application is hindered by the inevitable volumetric expansion during the lithiation/delithiation process. Constructing high-performance binders for SiOx-based anodes has been regarded as an efficient strategy to mitigate their volume expansion and preserve structural integrity. In this work, we propose a green water-solution PAA-LS binder composed of poly(acrylic acid) (PAA) and sodium lignosulfonate (LS) with fast self-healing properties. The designed binder can be restored due to the strong affinity between Fe3+-catechol coordination bonds, thereby effectively alleviating the volumetric strain of SiOx-based anodes. Notably, with an optimized LS content of 0.5%, the SiOx@PAA-LS electrode exhibits excellent performance, delivering a high capacity of 997.3 mAh g–1 after 450 cycles at 0.5 A g–1. Furthermore, the SiOx||NCM622 full cell also demonstrates superior cycling stability, maintaining a discharge capacity of 147.58 mAh g–1 after 100 cycles at 0.5 A g–1, with an impressive capacity retention rate of 82.72%.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2020
·
IF 4.231
Jing Zhao,Guochen Ji,Xiuling Zhang,Ruofei Hu,Junping Zheng
It is imperative to develop ideal self-healing material with intrinsic mechanical strength and mild self-healing conditions. Here, a rapid self-healing poly(vinyl alcohol) (PVA)/chitosan (CS) composite gel with multiple hydrogen bonds is designed. PVA/CS gel shows a particularly high strength of 0.266 MPa and can heal rapidly after completely broken. The self-healing performance can be ascribed to multiple hydrogen bonds provided by the P O/P–O⋯H groups of phytic acid. In particular, PVA/CS gel can be served as solid electrolyte . A flexible all-solid-state capacitor can be assembled based on the flexible polyaniline electrode and PVA/CS gel used as solid electrolyte. The capacitor exhibits a high specific capacitance of 390.6 mF/cm 2 and high capacitance retention ratio after hundreds of bends. Additionally, the PVA/CS gel can reconnect the broken capacitor with partial capacitance retention. This work can contribute to the design and fabrication of rapid self-healing gel and flexible all-solid-state capacitor.
研究领域:
材料科学
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电化学
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复合材料
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xing Su,Hao Wang,Zhuoling Tian,Xiaocen Duan,Zhihua Chai,Yuting Feng,Yanxia Wang,Yi Fan,Jianyong Huang
Antifreezing gels are promising in diverse engineering applications such as structural soft matters, sensors, and wearable devices. However, the capability of fast self-healing and reversible adhesiveness still remain a huge challenge for gels at extreme temperatures. Here, we proposed a solvent-involved cross-linking system composed of polyacrylic acid, polyvinyl alcohol, borax, ethylene glycol, and water, capable of antifreezing below −90 °C. It was not only antifreezing, anticrystalline, and abundant in dynamic bonds but also highly transparent, stretchable (over 800%), and conductive over the scope of temperature from −60 to 60 °C. Moreover, this gel could self-heal within 1 min and repeatedly adhere to multiple substrates including glass, metal, and rubber with an adhesive strength greater than 18 kPa. These key functions of the gel could be mostly preserved after 5 days of storage at 70% relative humidity. It is anticipated that our research opens a new scope for high-performance extreme environment-tolerant adhesives or wearable devices.
研究领域:
材料科学
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化学工程
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生物医学工程
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 3
·1899-1909
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IF 11.806
Liu Jie,Zheng Nan,Li Zonglin,Liu Ze,Wang Guoqing,Gui Lishuang,Lin Jing
With the rapid development of industrial manufacturing, the demand for superhydrophobic antifouling coatings with excellent mechanical and self-healing properties is increasingly urgent. In this paper, a fast self-healing and antifouling polyurethane/fluorinated polysiloxane-microcapsules-silica (PFPMS) composite material is prepared. Firstly, IPDI@PGMA m /GO microcapsules with compact shell structure are synthesized. Subsequently, the microcapsules together with nano-SiO 2 particles are filled in fluorinated polydimethylsiloxane (AHT- F PDMS), which is terminated by alcoholic hydroxyl and contains trifluoropropyl side groups. Finally, PFPMS composite is acquired by cross-linking at room temperature with the aid of hexamethylene diisocyanate (HDI). Herein, the strong hydrogen bond can effectively improve the mechanical and bonding strength of PFPMS. By constructing a micro–nano-dual-scale surface formed by the microcapsules and nano-SiO 2 , the excellent antifouling performance of PFPMS is realized. Furthermore, the isophorone diisocyanate (IPDI) core flowing out after ruptures of the microcapsules undergoes a rapid cross-linking reaction with the active hydrogen in the urethane bond at 65 ℃, thereby realizing fast self-healing. The result shows that the PFPMS is beneficial for achieving superior mechanical, antifouling and fast self-healing properties, which are expected to be widely used in self-cleaning, anti-icing, anti-fogging, oil/water separation, drag reduction, as well as the rapidly growing field of microfluidics, sensors and wearable fields. Graphical abstract A fast self-healing and antifouling polyurethane/fluorinated polysiloxane-microcapsules-silica (PFPMS) composite material was prepared.
研究领域:
材料科学
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化学工程
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表面化学
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高分子科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Ren'ai Li,Ting Fan,Guangxue Chen,Hujun Xie,Bin Su,Minghui He
It is attractive, though it is very challenging, to synthesize conductive elastomers with high transparency and self-healing ability, simultaneously with facile and environmentally friendly preparation process. Here we demonstrate the fabrication of highly transparent, self-healing conductive elastomers based on synergistic hydrogen bonding interactions between poly(polymerizable deep eutectic solvent) (poly(PDES)) and phytic acid (PA) molecules. The hybrid network elastomers showed a fast self-healing property (within 2 s) without any other external stimuli and excellent self-healing efficiency (91.5%) within 48 h. The poly(PDES)-PA elastomers were highly transparent (an average transmittance of 93%), intrinsically conductive (an ionic conductivity of 7.8 × 10 −4 S cm −1 ) and stretchable (strains up to 1300%). Furthermore, the abilities of healable & conductive poly(PDES)-PA elastomers to monitor the human activities retained no matter before or after being damaged. We believe this kind of dynamic bond manipulation is a powerful strategy to design and synthesize various transparent, self-healing, conductive elastomers for versatile applications.
研究领域:
材料科学
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高分子化学
·
纳米技术
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Chaohui Tian,Saeed Ahmed Khan,Zhiyi Zhang,Xiaojing Cui,Hulin Zhang
Electronic skins (e-skins) are being extensively researched for their ability to recognize physiological data and deliver feedback via electrical signals. However, their wide range of applications is frequently restricted by the indispensableness of external power supplies and single sensory function. Here, we report a passive multimodal e-skin for real-time human health assessment based on a thermoelectric hydrogel. The hydrogel network consists of poly(vinyl alcohol)/low acyl gellan gum with [Fe(CN)6]4–/3– as the redox couple. The introduction of glycerol and Li+ furnishes the gel-based e-skin with antidrying and antifreezing properties, a thermopower of 2.04 mV K–1, fast self-healing in less than 10 min, and high conductivity of 2.56 S m–1. As a prospective application, the e-skin can actively perceive multimodal physiological signals without the need for decoupling, including body temperature, pulse rate, and sweat content, in real time by synergistically coupling sensing and transduction. This work offers a scientific basis and designs an approach to develop passive multimodal e-skins and promotes the application of wearable electronics in advanced intelligent medicine.
研究领域:
材料科学
·
生物医学工程
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可穿戴电子
·
健康监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
ChenDi Ding,JianHua Xu,Ling Tong,GuangCai Gong,Wei Jiang,Jiajun Fu
Corrosion potential stimulus-responsive smart nanocontainers (CP-SNCs) are designed and synthesized based on the installation of the supramolecular assemblies (bipyridinium ⊂ water-soluble pillar[5]arenes) onto the exterior surface of magnetic nanovehicles (Fe3O4@mSiO2), linked by disulfide linkers. The supramolecular assemblies with high binding affinity as gatekeepers effectively block the encapsulated organic corrosion inhibitor, 8-hydroxyquinoline (8-HQ), within the mesopores of Fe3O4@mSiO2. When the corrosion potential of the magnesium alloy (−1.5 V vs SHE) is exerted, 8-HQ is released instantly because of the cleavage of disulfide linkers and the removal of the supramolecular assemblies. CP-SNCs were incorporated into the hybrid organic–inorganic sol–gel coating to construct a corrosion potential stimulus-feedback anticorrosion coating (CP-SFAC) that was then deposited on the magnesium alloy, AZ31B. With the aid of a magnetic field, CP-SNCs were gathered in the proximity of the surface of AZ31B. CP-SFAC showed a satisfactory anticorrosion performance, more importantly, through the evaluation of microzone electrochemical techniques. CP-SFAC presented the rapid self-healing functionality when the localized corrosion occurred. Shortening the distance between CP-SNCs and the surface of AZ31B enhances the availability of the incorporated CP-SNCs and makes most of the CP-SNCs to timely respond to the corrosion potential stimulus and facilitates the formation of a compact molecular protective film before the corrosion products pile up. The characteristics of fast response time and quick self-healing rate meet the requirements of the magnesium alloy for self-healing in local regions.
研究领域:
材料科学
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腐蚀工程
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纳米技术
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表面化学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Yanyan Li,Xin Wen,Xiaoru Li,Muhammad Zahid,Hongliang Wang,Jian Zhang
Since hydrogels are conductive, easily engineered, and sufficiently flexible to imitate the mechanical properties of human skin, they are seen as potential options for wearable strain sensors. However, it is still a great challenge to prepare a hydrogel through simple and straightforward methods that integrate excellent stretchability, ionic conductivity, toughness, self-adhesion, and self-healing. Herein, an acrylamide/3-acrylamide phenylboronic acid cross-linked network is modified to produce a semi-interpenetrating cross-linked hydrogel in just one easy step by adding starch. The prepared hydrogel contains dynamic boronic ester bonds and hydrogen bonds, which endow the exceptional stretchability (5769–13,976 %, 20–50 wt%), ideal transmittance (>90 %), self-adhesiveness (0.636 ± 0.060 kPa, 30 wt%), and self-healing properties. Notably, the self-healing process is completed instantly, achieving a healing strength of up to 81.21 %. Additionally, the aforementioned hydrogel exhibits a broad working strain range (≈ 500 %) and high sensitivity (gauge factor = 1.99) as a strain sensor, allowing it to record and track human actions precisely. This work provides a novel approach to synthesizing hydrogels with optimal overall mechanical characteristics, with the potential to facilitate the development of wearable strain sensing system based on hydrogels for real-world applications.
研究领域:
材料科学
·
生物医学工程
·
可穿戴技术
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Yufan Feng,Jie Yu,Dan Sun,Chao Dang,Wenfeng Ren,Changyou Shao,Runcang Sun
Hydrogel-based triboelectric nanogenerators (H-TENGs) are emerging as an appealing platform for the wearable electronics owing to their attractive mechanical flexibilities and conductive properties. However, time- and energy-consuming polymerization process of hydrogel and inevitable freezing of water within hydrogel networks at sub-zero temperature severely limit the practical applications of H-TENGs. To address the issues, we herein report a transparent, stretchable, anti-freezing, and self-healable TENG based on the ultrafast fabricated eutectogels for energy harvesting and self-powered sensors. The eutectogel electrode is initially constructed by a dynamic oxidation and coordination system composed of sulfonated lignin (SL) and Fe 3+ . After immersed in deep eutectic solvent (DES), the obtained eutectogels with high stretchability (~450%), transparency (93.5%) and ionic conductivity (8.70 mS cm −1 ) can be retained even in extreme temperature as low as − 80 °C. Notably, the eutectogel assembled TENGs (E-TENGs) show high and stable electrical output performances including open-circuit voltage of 105 V, short-circuit current of 0.5 µA, short-circuit charge of 10 nC, and power density up to 53 mW m −2 . The E-TENG with a self-charging system can easily light up 20 light-emitting diodes (LEDs) and charge up capacitors to drive commercial electronics by harvesting energy. Moreover, as a proof of concept , the flexible E-TENG can serve as a self-powered biomechanical sensor to realize the real-time monitoring of various human motions, which provide a promising and versatile platform for environment adaptable hydrogel-based TENG with reliable output performance and self-healing ability.
研究领域:
材料科学
·
纳米技术
·
能量收集
·
可穿戴电子
·
传感器
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2023
·
IF 3.4
Xinfeng Li,Tianyi Zhang,Baiqing Song,Kaili Yang,Xiaoqiong Hao,Jianhua Ma
In recent years, conductive hydrogels have been designed as flexible sensors with broad application prospects in the field of smart wearable devices. However, the coordination of the mechanical properties, self-healing capability, and conductivity of hydrogels has always been a challenge. In this work, a multifunctional conductive hydrogel with self-adhesive, re-shapeable, and rapid self-healing abilities (PB-PACS-PM3 (self-healing efficiency) = 98.8% in 15 s) was prepared by incorporating protocatechualdehyde modified carboxymethyl chitosan (PA@o-CMCS) and PDA-modified MXene (PDA@MXene) into the interchain of polyvinyl alcohol through dynamic borate ester crosslinking. The dynamic Schiff base reaction not only effectively introduced o-CMCS as a mechanical enhancer but also improved the viscoelasticity and self-healing capability of the hydrogel through the dual dynamic bond crosslinking structure. The PDA@MXene nanosheets are uniformly distributed in the hydrogel, providing the composite system with excellent conductivity (the conductivity of PB-PACS-PM3 hydrogel is 1.5 S/m) and strain sensitivity (the response time and recovery time of the hydrogel sensor are 230 and 260 ms, respectively), while the tensile strength of the hydrogel is improved to 0.035 MPa. Due to all these advantages, this conductive hydrogel can be assembled into flexible wearable sensors for rapid and accurate monitoring of various physiological activities of the human body, such as finger, wrist, elbow, and knee bending vibrations, among others.
研究领域:
材料科学
·
纳米技术
·
生物材料
·
可穿戴技术
·
传感器
✓ 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）