Switching between Elasticity and Plasticity by Network Strength Competition

Ming, Zunzhen; Pang, Yan; Liu, Jinyao

doi:10.1002/adma.201906870

Cited by 31 publications

(28 citation statements)

References 46 publications

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“…S19). In addition, the mechanical behavior of the hybrid hydrogel composed of a covalently cross-linked network (elastic property) and a physical network (plastic property) depends on which network playing a leading role in the hydrogel (38). Therefore, the mechanical behavior of EDG would be a consequence of the competition between the chemical and physical network in the hydrogel.…”

Section: Downloaded Frommentioning

confidence: 99%

Bioinspired high-power-density strong contractile hydrogel by programmable elastic recoil

Hua

et al. 2020

Sci. Adv.

131

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Stimuli-responsive hydrogels have large deformability but—when applied as actuators, smart switch, and artificial muscles—suffer from low work density due to low deliverable forces (~2 kPa) and speed through the osmotic pressure–driven actuation. Inspired by the energy conversion mechanism of many creatures during jumping, we designed an elastic-driven strong contractile hydrogel through storing and releasing elastic potential energy in polymer network. It can generate high contractile force (40 kPa) rapidly at ultrahigh work density (15.3 kJ/m3), outperforming current hydrogels (~0.01 kJ/m3) and even biological muscles (~8 kJ/m3). This demonstrated elastic energy storing and releasing method endows hydrogels with elasticity-plasticity switchability, multi-stable deformability in fully reversible and programmable manners, and anisotropic or isotropic deformation. With the high power density and programmability via this customizable modular design, these hydrogels demonstrated potential for broad applications in artificial muscles, contractile wound dressing, and high-power actuators.

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Section: Downloaded Frommentioning

confidence: 99%

Bioinspired high-power-density strong contractile hydrogel by programmable elastic recoil

Hua

et al. 2020

Sci. Adv.

131

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“…The gel has high tensile strength (about 2 MPa), ultrahigh toughness (fracture energy of about 10 kJ m −2 ), fast self‐healing ability, excellent load‐bearing ability, resistance to rolling and fatigue. Ming, Pang, and Liu (2020) designed a composite hydrogel composed of two different network structures. One of them is a covalently cross‐linked polymer network that brings good elasticity to the hydrogel.…”

Section: Engineering Methodsmentioning

confidence: 99%

Injectable hydrogels for tendon and ligament tissue engineering

Liu

Zhang

Chen

2020

J Tissue Eng Regen Med

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The problem of tendon and ligament (T/L) regeneration in musculoskeletal diseases has long constituted a major challenge. In situ injection of formable biodegradable hydrogels, however, has been demonstrated to treat T/L injury and reduce patient suffering in a minimally invasive manner. An injectable hydrogel is more suitable than other biological materials due to the special physiological structure of T/L. Most other materials utilized to repair T/L are cell‐based, growth factor‐based materials, with few material properties. In addition, the mechanical property of the gel cannot reach the normal T/L level. This review summarizes advances in natural and synthetic polymeric injectable hydrogels for tissue engineering in T/L and presents prospects for injectable and biodegradable hydrogels for its treatment. In future T/L applications, it is necessary develop an injectable hydrogel with mechanics, tissue damage‐specific binding, and disease response. Simultaneously, the advantages of various biological materials must be combined in order to achieve personalized precision therapy.

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“…Although this DN hydrogel contains ∼90% water, it can be stretched beyond 20 times its initial length and has a fracture energy of ∼9,000 J m −2 . In the research of Liu et al, [492] they formed a kind of hybrid hydrogel composed of a covalently crosslinked polyacrylamide network and a physical shear-thinning dexamethasone phosphate that can separately provide elastic and plastic property. The mechanical strength competition between two networks in a polymeric material can be switched between elasticity and plasticity.…”

Section: Figure 14 Schematic Illustrations Of An Sipn (A) and A Fipn (B)mentioning

confidence: 99%

Hydrogel: Diversity of Structures and Applications in Food Science

Jia

Luo

2021

Food Reviews International

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Hydrogels are a series of soft and wet materials with three dimensions of crosslinked networks. Hydrogels have attracted great attention due to their diverse functional properties, and their wide range of applications, such as in soft robots and actuators, stretched electronic devices, tissue engineering materials, controlled-release drug delivery vehicles, biomedicine materials, food science, and (bio)sensors. In general, there are four core concerns in hydrogel science, including the polymer source, structure fabrication, gel function, and gel applications. According to the logic that the "structure determines function", it is believed that rational design of structures can effectively regulate the functions and applications of hydrogels. Hence, in the current review, "structure" as the core topic will be highly regarded, and the crosslinking mechanisms and structural diversity of hydrogels are comprehensively summarized. Additionally, hydrogels also show their great application potential in food science. Hence, the current review also pays more attention to the application of hydrogels in food nutrition and health, food engineering and processing, and food safety. It is whished that this review not only serves as a reference for improving the comprehensive understanding of the structural design of hydrogels but also provides a forward-looking idea for hydrogel applications in food science.

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Switching between Elasticity and Plasticity by Network Strength Competition

Cited by 31 publications

References 46 publications

Bioinspired high-power-density strong contractile hydrogel by programmable elastic recoil

Bioinspired high-power-density strong contractile hydrogel by programmable elastic recoil

Injectable hydrogels for tendon and ligament tissue engineering

Hydrogel: Diversity of Structures and Applications in Food Science

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