Stability of hydrogel adhesion enabled by siloxane bonds

Liu, Junjie; Jiang, Zhouhu; Li, Yuhong; Kang, Guozheng; Qu, Shaoxing

doi:10.1016/j.engfracmech.2022.108662

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…The adhesion of DN hydrogel coatings on various substrates was obtained by the 90° peeling test (Figure a). The results of the peeling tests reveal three distinct fracture modes: interfacial fracture, cohesive fracture, and hybrid fracture ,, (Figure b). The interfacial fracture involves the initial precut propagating along the interface between the DN hydrogel coating and the substrate, suggesting a poor interfacial bonding strength.…”

Section: Resultsmentioning

confidence: 99%

“…Second, the substrate is immediately immersed in an aqueous solution of 3-(trimethoxysilyl) propyl methacrylate (TMSPMA). During the immersion, the hydroxyl groups on the hydrolyzed TMSPMA molecules condense with the hydroxyl groups on the substrate, resulting in a covalent bonding. , Finally, a layer of oily photoinitiator, phenyl(2,4,6-trimethylbenzoyl) phosphinate (TPO-L), is applied to the TMSPMA molecules-anchored substrate. TPO-L is chosen for its rapid initiation of monomer polymerization for hydrogel fabrication. , …”

Section: Methodsmentioning

confidence: 99%

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Growth of Double-Network Tough Hydrogel Coatings by Surface-Initiated Polymerization

Li,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Hydrogel coatings exhibit versatile applications in biomedicine, flexible electronics, and environmental science. However, current coating methods encounter challenges in simultaneously achieving strong interfacial bonding, robust hydrogel coatings, and the ability to coat substrates with controlled thickness. This paper introduces a novel approach to grow a double-network (DN) tough hydrogel coating on various substrates. The process involves initial substrate modification using a silane coupling agent, followed by the deposition of an initiator layer on its surface. Subsequently, the substrate is immersed in a DN hydrogel precursor, where the coating grows under ultraviolet (UV) illumination. Precise control over the coating thickness is achieved by adjusting the UV illumination duration and the initiator quantity. The experimental measurement of adhesion reveals strong bonding between the DN hydrogel coating and diverse substrates, reaching up to 1012.9 J/m 2 between the DN hydrogel coating and a glass substrate. The lubricity performance of the DN hydrogel coating is experimentally characterized, which is dependent on the coating thickness, applied pressure, and sliding velocity. The incorporation of 3D printing technology into the current coating method enables the creation of intricate hydrogel coating patterns on a flat substrate. Moreover, the hydrogel coating's versatility is demonstrated through its effective applications in oil−water separation and antifogging glasses, underscoring its wide-ranging potential. The robust DN hydrogel coating method presented here holds promise for advancing hydrogel applications across diverse fields.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Growth of Double-Network Tough Hydrogel Coatings by Surface-Initiated Polymerization

Li,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

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show abstract

“…Hydrogel [1] is a three-dimensional cross-linked polymeric network that can absorb and retain large amounts of water or other uids without rupture. With its unique three-dimensional cross-linked polymeric network, hydrogels are widely used in adsorbents [2,3] , agriculture [4] , drug delivery [5][6][7] , tissue engineering [8] , and communication sensing [9,10] , which has received extensive attention and applications. In recent years, with the development of arti cial intelligence devices, the demand for sensors for the detection of pressure and strain has increased, and hydrogels have received extensive attention.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of nanocellulose- reinforced environmentally adaptable PAM/PVA semi- interpenetrating highly conductive ion-conducting hydrogel

Huang

Wang

Tan

et al. 2023

Preprint

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In this work, a semi-interpenetrating network (IPN) hydrogel reinforced with cellulose nanocrystals (CNC) and containing lithium chloride (LiCl) and dimethyl sulfoxide (DMSO) is composed of cross-linked polyacrylamide (PAM) and linear polyethylene alcohol (PVA) chains, which had excellent anti-drying, anti-freezing, and ionic conductivity performance. The experimental results show that the ion-conducting hydrogel has excellent cyclic stretching performance. Under the tensile strain of 200%, the relative resistance of the PAM/PVA/CNC/LiCl hydrogel remained unchanged after 10 stretching cycles and returned to its original length. The water retention rate of PAM/PVA/CNC/LiCl hydrogel is close to 80% at 60 °C. In addition, even at -20 °C, the hydrogel still has good electrical conductivity and exhibits excellent anti-freezing performance. The ion-conducting hydrogel has excellent conductivity and anti-freezing and anti-drying properties and has potential application prospects in flexible wearable devices and sensors.

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Interfacial fatigue fracture of elastomer bilayers under cyclic large deformation

Liu

Jiang

et al. 2023

Engineering Fracture Mechanics

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Stability of hydrogel adhesion enabled by siloxane bonds

Cited by 7 publications

References 47 publications

Growth of Double-Network Tough Hydrogel Coatings by Surface-Initiated Polymerization

Growth of Double-Network Tough Hydrogel Coatings by Surface-Initiated Polymerization

Preparation and properties of nanocellulose- reinforced environmentally adaptable PAM/PVA semi- interpenetrating highly conductive ion-conducting hydrogel

Interfacial fatigue fracture of elastomer bilayers under cyclic large deformation

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