Dynamic reversible adhesives based on crosslinking network <i>via</i> Schiff base and Michael addition

Ren, Junyu; Yang, Hongxing; Wu, Yingchen; Liu, Sichen; Ni, Kelu; Ran, Xin; Zhou, Xiaojian; Gao, Wei; Du, Guanben; Yang, Long

doi:10.1039/d2ra02299k

Cited by 5 publications

(1 citation statement)

References 58 publications

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“…The Schiff base reaction is a condensation reaction that occurs between amino groups and carbonyl compounds, such as ketones or aldehydes. 82,100,101 The Michael addition is a versatile chemical reaction that involves a nucleophilic reagent (usually an enamine or enamine) adding to α,β-unsaturated ketone compounds. 102,103 Based on the covalent bonding formed by aldehyde groups and amino groups, the adhesion strength at the interface can be significantly enhanced.…”

Section: Hydrogel Materials Enhanced Adhesionmentioning

confidence: 99%

Flexible and stretchable implantable devices for peripheral neuromuscular electrophysiology

Li,

Zhao,

Song

et al. 2024

Nanoscale

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Section: Hydrogel Materials Enhanced Adhesionmentioning

confidence: 99%

Flexible and stretchable implantable devices for peripheral neuromuscular electrophysiology

Li,

Zhao,

Song

et al. 2024

Nanoscale

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Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

Shi,

Huo,

Yang

et al. 2024

Adv Funct Materials

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Cellulose consists of a natural, rigid polymer that is widely used to improve the mechanical and water‐holding properties of hydrogels. However, its abundant hydroxyl groups make it highly absorbent to free water, leading to swelling behavior. This increased free water content will also decrease mechanical and adhesive performance. In this study, cellulose is successfully hydrophobically modified to reduce its absorption of free water. Gelatin is then cross‐linked with cellulose through a Schiff‐base reaction, resulting in increased bound water content. This significantly enhances resistance to swelling and permeability, and improves the freeze–thaw stability of the hydrogel. Due to its internal hydrophobicity, water molecules can quickly penetrate into the interior, reducing their residence time on the hydrogel surface. This allows the hydrogel to maintain high adhesion in natural environments, achieving an adhesion strength of up to 3.0 MPa on wood and bamboo‐based materials. The hydrogel can retain its adhesive properties even after prolonged exposure to a humid environment. Additionally, Na+ ions enhance the electrical conductivity and sensitivity of the hydrogel (gauge factor (GF) = 1.51), demonstrating its potential applications in flexible sensing.

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Facile preparation of highly adhesive yet ultra-strong poly (vinyl alcohol)/cellulose nanocrystals composite hydrogel enabled by multiple networks structure

Lv,

Xu,

Hou

et al. 2024

International Journal of Biological Macromolecules

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Dynamic reversible adhesives based on crosslinking network via Schiff base and Michael addition

Abstract: Schematic diagram of synthetic FPA–PA polymer adhesives, schematic diagram of adhesion strength on different substrates, and adhesion strength with multiple damage cycles for reuse.

Cited by 5 publications

References 58 publications

Flexible and stretchable implantable devices for peripheral neuromuscular electrophysiology

Flexible and stretchable implantable devices for peripheral neuromuscular electrophysiology

Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

Facile preparation of highly adhesive yet ultra-strong poly (vinyl alcohol)/cellulose nanocrystals composite hydrogel enabled by multiple networks structure

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