Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors DOI
Yuqing Wang,

Yongchuan Wu,

Yuntao Liu

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1140 - 1150

Published: Feb. 26, 2024

Conductive organohydrogels with flexibility and biocompatibility have attracted extensive attention in bioelectronic devices. However, poor mechanical properties crack propagation resistance severely limited their applications. Herein, strong, tough, ionically conductive organogels (ICOs) outstanding fatigue are prepared based on simultaneous construction of dense cross-linked polymer network numerous crystalline domains during the solvent exchange. ICOs show excellent tensile strength elongation at break as high 16.7 ± 0.9 MPa 1112.4 120.3%, respectively. Moreover, fracture energy threshold can reach 34.0 4.7 KJ/m2 561.3 59.6 J/m2, respectively, exhibiting resistant properties. antifreezing performance used for strain sensing a linear working up to 80% superior cycling stability, ICO sensor monitor various body motions. The mechanically strong antifatigue promising applications flexible smart electronics even extreme environments.

Language: Английский

Design principles for strong and tough hydrogels DOI
Xueyu Li, Jian Ping Gong

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 380 - 398

Published: May 7, 2024

Language: Английский

Citations

198
A Biomimetic “Salting Out—Alignment—Locking” Tactic to Design Strong and Tough Hydrogel DOI Creative Commons
Xia Sun, Yimin Mao, Zhengyang Yu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 22, 2024

Abstract Recently, hydrogel‐based soft materials have demonstrated huge potential in robotics, flexible electronics as well artificial skins. Although various methods are developed to prepare tough and strong hydrogels, it is still challenging simultaneously enhance the strength toughness of especially for protein‐based hydrogels. Herein, a biomimetic “salting out—alignment—locking” tactic (SALT) introduced enhancing mechanical properties through synergy alignment salting out effect. As typical example, tensile modulus initially brittle gelatin hydrogels increase 940 folds 10.12 ± 0.50 MPa 2830 34.26 3.94 MPa, respectively, increases up 1785 14.28 3.13 MJ m −3 . The obtained hold records previously reported gelatin‐based hydrogel close tendons. It further elucidated that effect engenders hydrophobic domains, while prestretching facilitates chain alignment, both synergistically contributing outstanding properties. noteworthy SALT demonstrates remarkable versatility across different salt types polymer systems, thus opening new avenues engineering strong, tough, stiff

Language: Английский

Citations

66
Evolutionary Reinforcement of Polymer Networks: A Stepwise‐Enhanced Strategy for Ultrarobust Eutectogels DOI
Ning Tang, Yujia Jiang,

Kailun Wei

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 8, 2023

Abstract Gel materials are appealing due to their diverse applications in biomedicine, soft electronics, sensors, and actuators. Nevertheless, the existing synthetic gels often plagued by feeble network structures inherent defects associated with solvents, which compromise mechanical load‐bearing capacity cast persistent doubts about reliability. Herein, combined attractive deep eutectic solvent (DES), a stepwise‐enhanced strategy is presented fabricate ultrarobust eutectogels. It focuses on continuous modulation optimization of polymer networks through complementary annealing exchange processes, drives progressive increase both quantity mass interconnected chains at microscopic scale, hence contributing evolutionary enhancement structure. The resultant eutectogel exhibits superb properties, including record‐breaking strength (31.8 MPa), toughness (76.0 MJ m −3 ), Young's modulus (25.6 together exceptional resistance ability tear crack propagation. Moreover, this able be further programmed photolithography situ create patterned for imparting specific functionalities. Enhanced its broad applicability various DES combinations, poised serve as crucial template methodology future development robust gels.

Language: Английский

Citations

60
Conductive hydrogels for bioenergy harvesting and self-powered application DOI
Chenyang Zhang, Md Osman Goni Nayeem, Zhiqi Wang

et al.

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 138, P. 101156 - 101156

Published: June 23, 2023

Language: Английский

Citations

57
Super‐Structured Wet‐Adhesive Hydrogel with Ultralow Swelling, Ultrahigh Burst Pressure Tolerance, and Anti‐Postoperative Adhesion Properties for Tissue Adhesion DOI

Pengwei Ma,

Weiwen Liang, Rongkang Huang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Nov. 28, 2023

Abstract Wet‐adhesive hydrogels have been developed as an attractive strategy for tissue repair. However, achieving simultaneously low swelling and high burst pressure tolerance of wet‐adhesive is crucial in vivo application which remains challenges. Herein, a novel super‐structured porous hydrogel (denoted PVA/PAAc‐N + ) designed via facile moisture‐induced phase separation‐solvent exchange process obtaining polyvinyl alcohol (PVA) dissipative layer situ photocuring technology entangling quaternary ammonium‐functionalized poly(acrylic acid)‐based (PAAc‐N with the surface PVA layer. Benefitting from ionic crosslinking between ammonium ions carboxylate PAAc‐N well crystallinity induced by abundant hydrogen bonds layer, has unique ultralow property (0.29) without sacrificing adhesion strength (63.1 kPa). The structure facilitates mechanical interlock at interface tough leading to ultrahigh up 493 mm Hg effective repair porcine heart rupture; can prevent postoperative adhesion. By integrating swelling, tolerance, anti‐postoperative properties, shows appealing prospect

Language: Английский

Citations

49
High Strength and Toughness Polymeric Triboelectric Materials Enabled by Dense Crystal-Domain Cross-Linking DOI
Chenchen Cai, Xiangjiang Meng, Lixin Zhang

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(12), P. 3826 - 3834

Published: March 18, 2024

Lightweight, easily processed, and durable polymeric materials play a crucial role in wearable sensor devices. However, achieving simultaneously high strength toughness remains challenge. This study addresses this by utilizing an ion-specific effect to control crystalline domains, enabling the fabrication of triboelectric material with tunable mechanical properties. The dense crystal-domain cross-linking enhances energy dissipation, resulting boasting both tensile (58.0 MPa) (198.8 MJ m–3), alongside remarkable 416.7% fracture elongation 545.0 MPa modulus. Leveraging these properties, is successfully integrated into self-powered devices, real-time feedback on human joint movement. work presents valuable strategy for overcoming strength-toughness trade-off materials, paving way their enhanced applicability broader use diverse sensing applications.

Language: Английский

Citations

40
Design of Fatigue‐Resistant Hydrogels DOI
Zilong Han, Yuchen Lu, Shaoxing Qu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(21)

Published: Jan. 4, 2024

Abstract Hydrogels are made tough to resist crack propagation. However, for seamless integration into devices and machines, it necessitates robustness against cyclic loads. Central this objective is enhancing fatigue resistance, an indispensable attribute facilitating the optimal performance of hydrogels within a multitude biological contexts, spanning various plant animal tissues, as well diverse biomedical engineering areas. In review, recent research concerning behavior hydrogels, presenting comprehensive consolidation inherent mechanisms that underpin strategies aimed at fortifying summarized. A critical facet in architectural blueprint fatigue‐resistant emphasized, involving imposition spatial constraints upon main chains tips, thereby effectuating protracted delay their fracture initiation during prolonged loading. The multiscale encompassing networks, interactions, media, structures stands pivotal factor design hydrogels. It hoped review will considerably propel pragmatic deployment across array applications, thus catalyzing advancements multiple fields.

Language: Английский

Citations

37
Tough Supramolecular Hydrogels Crafted via Lignin‐Induced Self‐Assembly DOI Creative Commons
Xiaofeng Pan,

Jiawei Pan,

Li Xiang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 10, 2024

Abstract Supramolecular hydrogels are typically assembled through weak non‐covalent interactions, posing a significant challenge in achieving ultra strength. Developing higher strength based on molecular/nanoscale engineering concepts is potential improvement strategy. Herein, super‐tough supramolecular hydrogel by gradually diffusing lignosulfonate sodium (LS) into polyvinyl alcohol (PVA) solution. Both simulations and analytical results indicate that the assembly subsequent enhancement of crosslinked network primarily attributed to LS‐induced formation gradual densification strong crystalline domains within hydrogel. The optimized exhibits impressive mechanical properties with tensile ≈20 MPa, Young's modulus ≈14 toughness ≈50 MJ m⁻ 3 , making it strongest lignin‐PVA/polymer known so far. Moreover, LS provides excellent low‐temperature stability (<‐60 °C), antibacterial, UV‐blocking capability (≈100%). Interestingly, diffusion ability demonstrated for self‐restructuring damaged hydrogel, 3D patterning surfaces, enhancing local freeze‐thaw PVA goal foster versatile platform combining eco‐friendly biocompatible PVA, paving way innovation interdisciplinarity biomedicine, materials, forestry science.

Language: Английский

Citations

24
Cellulose-Based Conductive Hydrogels for Emerging Intelligent Sensors DOI
Xue Yao, Sufeng Zhang, Ning Wei

et al.

Advanced Fiber Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 14, 2024

Language: Английский

Citations

22
Structuring and Shaping of Mechanically Robust and Functional Hydrogels toward Wearable and Implantable Applications DOI
Xiao‐Qiao Wang, An‐Quan Xie,

Pengle Cao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(23)

Published: Feb. 23, 2024

Abstract Hydrogels possess unique features such as softness, wetness, responsiveness, and biocompatibility, making them highly suitable for biointegrated applications that have close interactions with living organisms. However, conventional man‐made hydrogels are usually soft brittle, inferior to the mechanically robust biological hydrogels. To ensure reliable durable operation of wearable implantable devices, mechanical matching shape adaptivity tissues organs essential. Recent advances in polymer science processing technologies enabled engineering shaping various applications. In this review, network structuring strategies at micro/nanoscales toughening summarized, representative functionalities exist materials but not easily achieved synthetic further discussed. Three categories technologies, namely, 3D printing, spinning, coating fabrication tough hydrogel constructs complex shapes reviewed, corresponding also highlighted. These developments enable adaptive functional promote application fields biomedical engineering, bioelectronics, robotics.

Language: Английский

Citations

21