JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Haoran Niu,Zhanhong Lin,Peixi Yu,Hongsui Luo,Chunrui Peng,Wenping Ning,Bo Li,Yimin Wei,Qiuquan Guo,Jun Yang,Dongxing Zhang,Peipei Jia
Hydrogels have emerged as transformative materials in human–machine interfaces due to its similarity to natural biological tissues. However, existing hydrogels generally suffer from inherent drawbacks such as low mechanical strength, insufficient conformability, and poor environmental tolerance, which severely limit long-term, reliable, and seamless interactions between humans and machines. In this study, a synergistic strategy of fiber reinforcement and solvent displacement is employed to develop an ultrathin, tough, anti-freezing, and anti-dehydration composite hydrogel interface. Benefiting from the efficient energy dissipation and stress transfer mechanisms of the styrene ethylene butylene styrene/polyurethane (SEBS/PU) composite fibers, the resulting 20 μm ultrathin hydrogel exhibits exceptional mechanical properties, with a fracture elongation of 676.7 %, toughness of 2.78 MJ m −3 , and Young’s modulus of 544.7 kPa, enabling conformal interfacing with multiple human skin regions. Furthermore, the glycerol/water binary solvent system, through hydrogen bonding with water molecules, imparts the hydrogel with excellent anti-freezing and anti-dehydration properties. Notably, epidermal electrodes designed from this hydrogel achieve seamless integration with human skin, enabling long-term, high-fidelity (31.41 dB) electrophysiological signal monitoring, demonstrating significant potential for applications in wearable health monitoring, medical diagnostics, and augmented reality systems.
研究领域:
材料科学
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生物医学工程
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可穿戴设备
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 40
·13857-13864
·
IF 6.4
Wentang Wang,Xinyue Deng,Jinlong Lu,Chunhui Luo
Traditional conductive hydrogels are inevitably dehydrated by water evaporation when exposed to dry environments, which greatly retards their applications. Although great efforts have been devoted to reducing water evaporation, a combination of excellent stretchability, high sensitivity, non-freezing properties and self-adhesive capability has hardly been realized. Inspired by painting, an emulsion from poly butyl acrylate was prepared and coated onto the surface of a micellar cross-linked polyacrylamide (PAM) hydrogel to prepare a hydrophobic coated PAM gel (C-PAM). The presence of a hydrophobic layer endowed it with excellent anti-drying capability (84 ± 0.45% weight retention after 7 days under ambient conditions), while micelle-like aggregates imparted excellent extensibility (elongation at break = 5200%). The introduction of poly butyl acrylate also empowered self-adhesive properties. The C-PAM hydrogel could adhere to rubber, cardboard, metal, wood, glass and plastic with strengths of 38.59 ± 8.29, 47.42 ± 8.06, 15.53 ± 2.61, 46.54 ± 7.92, 14.71 ± 2.17 and 29.33 ± 3.11 kPa, respectively. The adoption of sodium chloride (NaCl) imparted high sensitivity (GF = 6.41) and anti-freezing properties (−20 °C). Bearing multi-functions, the reported strategy is expected to significantly broaden the applications of conductive hydrogels.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaoyong Zhang,Haoran Ding,Yujia Zhou,Zhaozhao Li,Yongping Bai,Lidong Zhang
Poly(N-isopropylacrylamide) (PNIPAM) enhances the reversibility and responsiveness of wearable temperature-sensitive devices. However, an open question is whether and how the hydrogel design can prevent adhesive performance loss caused by phase-transition-induced dehydration and unstable mechanical properties between devices and human skin and reduce interfacial failure. Herein, a gelatin-mesh scaffold-based hydrogel (NAGP-Gel) is constructed to inhibit dehydration and volume change, leading to stable mechanical properties, superior adhesiveness, and thermal sensing sensitivity during the phase transition. NAGP-Gel enhances the polymer chains–water interaction and weakens the degree of aggregation of polymer chains–chains, improving antidehydration properties under 45 °C conditions that are higher than the lower critical solution temperature (LCST; i.e., ∼32 °C). The mesh scaffold greatly restricts the phase-transition-induced polymer chain movement and maintains the mechanical performance. In a 60 °C environment, the maximum water loss and volume retention ratio of NAGP-Gel are only 3.58% and 97.3%, respectively. Additionally, NAGP-Gel serves as a temperature sensor, producing a stable thermal–electrical signal within the LCST range. It also can be assembled into an electronic device enabling the transmission of information and recognition of sign language via Morse code. This work broadens the application of PNIPAM in constructing intelligent hydrogels and opens the door to exploring emerging hydrogels for temperature-monitoring applications.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Zhuo Zhang,Luxuan Guo,Xiaolai Zhang,Jingcheng Hao
Hypothesis The color-changing ability of creatures widely existed in nature has inspired the development of adaptive allochroic materials, which can respond to various external stimuli. Integrating multi-stimuli responsiveness and long-term stability in allochroic system are urgent for practical applications under complex circumstances. Experiments The photochromic/thermotropic organohydrogels (PTOs) comprised polyacrylamide and cationic cellulose (JR400) were prepared by facile free-radical polymerization and glycerol displacement. The coexisting covalent bonds and noncovalent interactions collaboratively reinforce the networks, endowing the PTOs with boosted stretchability and toughness. Findings The photochromic ammonium molybdate (Mo 7 ) and thermo-sensitive poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (EPE) were made into networks. In these cooperative networks, each constituent performed their own function without disruption, including fast photochromism (10 s) and durable thermo-responsiveness. Importantly, the glycerol-water solvent bestowed the distinct anti-freezing (-30 °C) and anti-dehydration performances on the PTOs. Accordingly, the materials could serve as promising rewritable devices for high-resolution and long-term data storage/encryption. Moreover, on-demand PTO windows integrating UV-prevention and solar energy regulation with T lum (92.96%) and ΔT sol (46.02%) could create comfortable and healthy environments for occupants. This work offers a new design strategy for low-cost, environmentally stable smart optical devices .
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Zeyi Wang,Xuejie Zou,Zhiwei Yang,Jian Wang,Qian Chen,Chengjie Pei,Zhiwei Wang,Mengwei Dong,Jian Zhang,Hai Li,Xiao Huang
Wearable temperature sensors with high sensitivity and stability hold great potential for human health monitoring. However, hydrogels, which are commonly used for wearable devices, often show poor thermal and electrical conductivity and are susceptible to dehydration and freezing. Herein, we developed a frost- and dehydration-resistive temperature sensor based on Fe2+/Ti2CTx/κ-carrageenan (CA)-polyacrylamide (PAM) hydrogel. The Fe2+ ions within the hydrogel existed in two forms: as free ions and bonded ions. The free Fe2+ ions could complex with water molecules, resulting in the improved resistance to dehydration and freezing, as well as enhanced ionic conductivity in the hydrogel. On the other hand, the remaining Fe2+ ions acted as linkers to form coordination bonds with the sulfate groups of CA chains, resulting in the greatly enhanced mechanical strength of the hydrogel. In addition, the Ti2CTx nanosheet-based fillers formed a well-defined porous laminar structure, which reduced the phonon scattering and improved the phonon adsorption within the hydrogel. The Fe2+/Ti2CTx/CA-PAM hydrogel sensor exhibited excellent temperature sensing performance including a good linearity (R2 = 0.998) within a broad working range (−10 to 60 °C), high resolution (0.1 °C), and good repeatability. Furthermore, the sensor was integrated into a wireless system for continuous monitoring of body temperature, demonstrating its potential in healthcare monitoring, electronic skins, and intelligent robots.
研究领域:
材料科学
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生物医学工程
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电子皮肤
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2025
·
IF 3.9
Liu Qingye,Wang Chenghua,Zou Chang,Li Jiangtao,Liu Jun,Liu Yilun,Sun Xueyan,Zhao Wei
Polyvinyl alcohol (PVA) hydrogel as a hydrogel electrolyte faces issues such as fracture, dehydration, and poor conductivity, limiting its application in flexible zinc-air batteries. To address these, we propose a triethanolamine (TEA)-modified PVA-based hydrogel material (TPVA). TEA promoted formation of a uniform mesoporous structure and enables TPVA hydrogel to exhibit excellent mechanical properties, with an elongation at break (425%) approximately twice that of PVA (230%). Additionally, TPVA material retains excellent hydration after 120 h, demonstrating a significant enhancement in water retention. TPVA-based ZABs achieved a power density of 46.1 mW cm −3 , which is 3.1 times enhancement than that of PVA-based (14.9 mW cm −3 ), and demonstrated significantly extended cycling stability, maintaining stable charge–discharge operation for 35.7 h, outperforming PVA system (11.5 h). Dynamic simulation revealed TEA-PVA interactions, with TPVA showing denser hydrogen bond networks and lower potential energy. This work proposes a promising approach to enhance PVA hydrogel electrolytes for flexible ZABs.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Lina Wang,Wenna Chen,Hai Li,Xinye Xu,Zhilin Zhang,Lidong Wu,Jingkun Xu,Yao Huang,Baoyang Lu
Plant strain sensors, which enable real-time monitoring of plant growth, play a crucial role in improving both the quality and yield of various plants. However, current plant strain sensors often exhibit significant mechanical mismatches and poor interfacial compatibility with plant tissues, leading to inaccurate and unstable in situ monitoring. Herein, we present a novel ultrasoft, anti-dehydrated, and highly stretchable organohydrogel (UASOH) strain sensor composed of polyacrylamide (PAM) and carboxymethylcellulose (CMC) via a glycerol-induced hydrogen bonding enhancement strategy. The resultant UASOH exhibits low Young's modulus (18 kPa), exceptional stretchability (1448 %), and outstanding water retention capacity (maintaining 82 % water content after 50 days), enabling seamless contact and reliable long-term monitoring of living plants. The UASOH-based strain sensor features an ultra-wide stretchability range (0–900 %), and high sensitivity (gauge factor of 6.18), demonstrating state-of-the-art performance compared with previous reports. We further integrate the as-prepared sensor with a Bluetooth module to develop a wireless sensing system for non-invasive in situ plant growth monitoring under both ideal and abiotic stress conditions. Such a high-performance UASOH-based strain sensor and its integrated wireless sensing systems demonstrate significant potential for practical plant-monitoring applications.
研究领域:
植物学
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材料科学
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传感器技术
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Shanshan Wu,Jing Guo,Yilei Wang,Hui Xie,Shaobing Zhou
Hydrogel-based wearable flexible electronics are attracting tremendous interest for use in human healthcare. However, many of the existing hydrogel electronics are often susceptible to dehydration, leading to weakened stretchability and inaccurate signal extraction. Besides, hydrogels are desired to be much smarter for self-repairing physical damage and enabling performance manipulation. Herein, we develop a kind of cryopolymerized polyampholyte gels with the multifunctionality of antidehydration, self-healing, and shape-memory for wearable sensing electronics. The antidehydration property is enabled by the incorporation of glycerol, endowing the sensing electronics with excellent stretchability and strain-sensing performance in long-term monitoring. The ionic bonds in the polyampholyte gel possess a dynamic feature regulated by alternant NaCl(aq) and H2O treatments, laying the foundation for self-healing and shape-memory. As a result, the sensing electronics can automatically repair physical damages without any sacrifice in sensing performance, after healing both conductivity and strain-sensing performance could return to the initial levels. The shape-memory function enables the temporal adjustment of the initial state of the sensing electronics; both the conductivity and sensing performance, for instance, signal intensity, can be manually manipulated. In all, the cryopolymerized polyampholyte gels with antidehydration, self-healing, and shape-memory properties can be an inspiration to develop sustainable and tunable gel-based electronics for 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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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Xiaoliang Zou,Xuechuan Wang,Zhongxue Bai,Ouyang Yue,Chao Wei,Long Xie,Huijie Zhang,Xinhua Liu
Conductive hydrogels (CHs) have been widely utilized in the design of wearable flexible sensors. The remaining issues with CHs include their propensity to dehydrate in the open air and freeze at low temperatures, which makes them significantly less functional. Additionally, the wide applications of CHs are limited by their dependence on external power sources and inadequate sensing of humidity, strain, etc. Herein, a series of versatile ion-conductive adhesive hydrogels (GAAAD) with emblematic on-demand 3D cross-network structures were nanoengineered by combining solvent exchange strategies with in-situ physical and covalent cross-linking. The GAAAD possesses exceptional properties such as integrated outstanding sensing of multiple external stimuli in harsh environments, desirable adhesive ability towards various substrates, mechanical robustness, transparency, anti-freezing and anti-dehydration performance, and self-healing capacity. Even after being frozen at −20 ℃ for 48 h, GAAAD could be utilized for effective real-time human sleeping monitoring, demonstrating preponderant environmental stability. Integrated with the versatile origins of GAAAD, a simple Cu/GAAAD/Zn self-powered flexible sensor (GAAADB) was developed based on the fundamental structure of a primary battery, which exhibits remarkable properties of stable open-circuit voltage even in extremely cold environments, sensitive response to applied tensile or compressive strain, as well as its repeatability and durability. Interestingly, based on the sensing mechanism of the potential difference between the humidity-regulating electrodes, GAAADB was substantiated to be reliable for long-term respiratory monitoring (with the humidity response/recovery time less than 1 s) under extreme cold conditions (−20 °C), indicating its great potential for extensive applications in respiratory diagnosis, sleep monitoring, electronic skin, and wearable electronics.
研究领域:
材料科学
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生物医学工程
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传感技术
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产品关联
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 9
·1025
·
IF 2.935
Bo Xu,Yuwei Liu,Lanlan Wang,Xiaodong Ge,Min Fu,Ping Wang,Qiang Wang
Hydrogels with excellent mechanical properties have potential for use in various fields. However, the swelling of hydrogels under water and the dehydration of hydrogels in air severely limits the practical applications of high-strength hydrogels due to the influence of air and water on the mechanical performance of hydrogels. In this study, we report on a kind of tough and strong nanocomposite hydrogels (NC-G gels) with both swelling-resistant and anti-dehydration properties viain situfree radical copolymerization of acrylic acid (AA) andN-vinyl-2-pyrrolidone (VP) in the water-glycerol bi-solvent solutions containing small amounts of alumina nanoparticles (Al2O3NPs) as the inorganic cross-linking agents. The topotactic chelation reactions between Al2O3NPs and polymer matrix are thought to contribute to the cross-linking structure, outstanding mechanical performance, and swelling-resistant property of NC-G gels, whereas the strong hydrogen bonds between water and glycerol endow them with anti-dehydration capacity. As a result, the NC-G gels could maintain mechanical properties comparable to other as-prepared high-strength hydrogels when utilized both under water and in air environments. Thus, this novel type of hydrogel would considerably enlarge the application range of hydrogel materials.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Xinyue Deng,Wentang Wang,Denglan Du,Chunhui Luo
Conductive hydrogels (CHs) have attracted considerable interest for the detection of physiological movements and health conditions. However, traditional CHs cannot meet the increasing demands of soft electronics due to their nonadhesive, brittle, freezable, and vaporizable natures. In this work, bilayer hydrogels were prepared to address this issue, which consisted of a conductive polyacrylamide (PAM) hydrogel as the bottom layer as well as an adhesive side as the top layer from grape seed protein (GSP) and tannic acid (TA), respectively. Due to the synergy of material composition and structure engineering, the obtained gel exhibited high extensibility (an elongation at break of 4000%) and excellent adhesion onto metal, wood, rubber, and skin. Furthermore, the introduction of lithium chloride empowered the resultant hydrogel with high sensitivity (GF = 1.14 within 1000% strain, and GF = 4.36 above 1000% strain), freeze resistance (a strain of 3700% at −20 °C), and antidehydrating capacity (a weight retention ratio of 63.9% after storing it in an open environment for 30 days). Consequently, this multifunctional sensor could detect various human motions quickly and reliably. With remarkable performances in extreme environments, it has great potential in strain sensors, human–machine interfaces, and soft robots.
研究领域:
材料科学
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生物医学工程
·
软体电子学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qingqing Zheng,Liyang Liu,Zewei Hu,Zhenwei Tang,Haiying Lu,Yunqi Gao,Jiayao Wang,Yijian Song,Chao Han,Weijie Li
Hydrogel electrolytes are favored for flexible zinc-ion batteries (FZIBs) due to their biocompatibility. Their application progress, however, is severely restricted by the poor water retention and low Zn 2+ transference number (t Zn 2+ ). Herein, one composite polymer electrolyte (CPE) is prepared by introducing Prussian blues (PBs) as multifunctional fillers in polyvinyl alcohol (PVA) matrix to enhance t Zn 2+ . Experimental and theoretical characterizations confirm that the PB filler can alter the Zn 2+ migration mechanism and trap water of CPE. PBs as active fillers can provide extra zinc ions and unique 3D ion diffusion channels. Moreover, the metal centers in PB framework that function as the Lewis acid sites have good affinity with anions in Zn salt, facilitating the dissociation of Zn salt. Additionally, the PB framework can absorb coordination water, enhancing the anti-dehydration capability and the ionic conductivity of the hydrogel electrolytes. Consequently, P-15/Zn-15 hydrogel electrolyte shows high ionic conductivity of 16.3 mS cm⁻ 1 and t Zn 2+ of 0.63. The Zn||Zn symmetric cells with P-15/Zn-15 hydrogel electrolyte can stably operate for 1 600 h at 50 °C. The Zn||P-15/Zn-15|| NaV 3 O 8 ·1.5H 2 O full cell exhibits excellent cycling performance of 1 600 cycles.
研究领域:
材料科学
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电化学
·
能源存储
✓ 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）