Conductive cellulose nanofibrils-reinforced hydrogels with synergetic strength, toughness, self-adhesion, flexibility and adjustable strain responsiveness

Lü, Jinshun; Han, Xiao; Dai, Lin; Li, Chenyu; Wang, Jingfeng; Zhong, Yongda; Yu, Fei; Si, Chuanling

doi:10.1016/j.carbpol.2020.117010

Cited by 85 publications

(36 citation statements)

References 43 publications

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“…Lignin, ,,, starch, , protein, ,, tannic acid, , and vegetable oil, , through some effective solutions such as cross-linking reaction ( e.g. , chemical cross-linking, dual-cross-linked network, H-bonded cross-linking, and covalent bond cross-linking), copolymerization, in situ synthesis, electrostatic complexation, self-assemblies, and modification of supramolecular structure, surmount the problems of poor adhesive strength and water resistance of plant-based biomass adhesives. , To the best of our knowledge, cellulose is the most abundant natural linear polymer, making up of d -anhydroglucopyranose units (AGUs) linked by β-1,4-glycosidic bonds on earth. , It shows many excellent characteristics including renewable, biocompatibility, biodegradability, high strength, and nanostructure . It is considered as an ideal reinforcement phase to improve the mechanical properties in preparation of hydrogels and adhesives. ,, Meanwhile, it also sticks out in the electrochemical field on account of unique ordered hierarchical structure endowing it a ion transport behavior and giving rise to an nanofluidic conduit. , Nevertheless, cellulose is often overlooked as the main component of adhesives, owing to inherent hydrophilicity and insolubility of water and organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Developing High-Performance Cellulose-Based Wood Adhesive with a Cross-Linked Network

Liu

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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Green, environment friendly, and sustainable biomass-based adhesive has been considered as an optimum alternative of petroleum-derived adhesive, yet poor water resistance restricts their advancement and popularization to a large extent. Herein, a hyperbranched cross-linking cellulose-based adhesive with a synergistic effect of covalent bonds and secondary bonds (mainly include hydrogen bond and hydrophobic effect) is synthesized based on the Maillard reaction between dialdehyde cellulose (DAC) and polyamines. The active aldehyde sites on the DAC skeleton anchor the amino group to form covalent bonds consuming a large number of hydrophilic groups, the remaining aliphatic segments of polyamines criss-cross to knit a hydrophobic network and endow the adhesive the ability to resist water erosion; integrant-exposed hydrophilic groups form intermolecular hydrogen bonds preferentially after curing and clustering due to the agglomeration effect of cellulose, which reduces the opportunity of forming hydrogen bonds with water molecules. The outstanding water resistance is manifested in two aspects: (1) the dry lap shear strength of modified adhesive increased from 1.47 to 3.29 MPa, making increments of 123.8% compared with the original DAC adhesive, the re-dry strength after 3 h of immersion in water of 63 °C or boiling achieved a breakthrough from 0 to 2.27 and 2.36 MPa; (2) the modified adhesive has a higher residual rate (above 77%) and a lower moisture absorption value (less than 22.2%) compared with the neat DAC adhesive (49 and 26.6%). The work provides an underlying approach to prepare wood adhesive with excellent bonding performance and eminent water resistance based on green and cheap raw materials and simple cooking chemistry.

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Section: Introductionmentioning

confidence: 99%

Developing High-Performance Cellulose-Based Wood Adhesive with a Cross-Linked Network

Liu

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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“…Firstly, metal cations, such as Fe 3+ and Zn 2+ , can mediate the crosslinking of CNFs and the formation of CNF hydrogels [ 47 ]. For instance, Lu et al reported the preparation of CNF hydrogels induced by Zn 2+ ions [ 48 ].…”

Section: Fabrication Of Cnf-based 1d 2d and 3d Functional Materialsmentioning

confidence: 99%

Recent Advances in the Fabrication and Environmental Science Applications of Cellulose Nanofibril-Based Functional Materials

Zhang¹,

Guo

Wei

2021

Materials

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Cellulose is one of the important biomass materials in nature and has shown wide applications in various fields from materials science, biomedicine, tissue engineering, wearable devices, energy, and environmental science, as well as many others. Due to their one-dimensional nanostructure, high specific surface area, excellent biodegradability, low cost, and high sustainability, cellulose nanofibrils/nanofibers (CNFs) have been widely used for environmental science applications in the last years. In this review, we summarize the advance in the design, synthesis, and water purification applications of CNF-based functional nanomaterials. To achieve this aim, we firstly introduce the synthesis and functionalization of CNFs, which are further extended for the formation of CNF hybrid materials by combining with other functional nanoscale building blocks, such as polymers, biomolecules, nanoparticles, carbon nanotubes, and two-dimensional (2D) materials. Then, the fabrication methods of CNF-based 2D membranes/films, three-dimensional (3D) hydrogels, and 3D aerogels are presented. Regarding the environmental science applications, CNF-based nanomaterials for the removal of metal ions, anions, organic dyes, oils, and bio-contents are demonstrated and discussed in detail. Finally, the challenges and outlooks in this promising research field are discussed. It is expected that this topical review will guide and inspire the design and fabrication of CNF-based novel nanomaterials with high sustainability for practical applications.

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“…Hydrogel is a kind of soft−wet material with a three−dimensional polymer network [ 1 , 2 , 3 ]. In recent years, hydrogels have been widely applied in the fields of intelligent sensing [ 4 , 5 ], biomedicine [ 6 , 7 , 8 , 9 , 10 ], and human health monitoring [ 11 , 12 , 13 ] due to its high stretchability, ionic conductive path, and high water content [ 14 , 15 , 16 ]. Electronic or ionic conductivity is a necessary condition to ensure that hydrogel can transform external mechanical stimulation into easily collected electrical signals.…”

Section: Introductionmentioning

confidence: 99%

Smart Antifreeze Hydrogels with Abundant Hydrogen Bonding for Conductive Flexible Sensors

Dai

Cui

et al. 2022

Gels

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Recently, flexible sensors based on conductive hydrogels have been widely used in human health monitoring, human movement detection and soft robotics due to their excellent flexibility, high water content, good biocompatibility. However, traditional conductive hydrogels tend to freeze and lose their flexibility at low temperature, which greatly limits their application in a low temperature environment. Herein, according to the mechanism that multi−hydrogen bonds can inhibit ice crystal formation by forming hydrogen bonds with water molecules, we used butanediol (BD) and N−hydroxyethyl acrylamide (HEAA) monomer with a multi−hydrogen bond structure to construct LiCl/p(HEAA−co−BD) conductive hydrogel with antifreeze property. The results indicated that the prepared LiCl/p(HEAA−co−BD) conductive hydrogel showed excellent antifreeze property with a low freeze point of −85.6 °C. Therefore, even at −40 °C, the hydrogel can still stretch up to 400% with a tensile stress of ~450 KPa. Moreover, the hydrogel exhibited repeatable adhesion property (~30 KPa), which was attributed to the existence of multiple hydrogen bonds. Furthermore, a simple flexible sensor was fabricated by using LiCl/p(HEAA−co−BD) conductive hydrogel to detect compression and stretching responses. The sensor had excellent sensitivity and could monitor human body movement.

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Conductive cellulose nanofibrils-reinforced hydrogels with synergetic strength, toughness, self-adhesion, flexibility and adjustable strain responsiveness

Cited by 85 publications

References 43 publications

Developing High-Performance Cellulose-Based Wood Adhesive with a Cross-Linked Network

Developing High-Performance Cellulose-Based Wood Adhesive with a Cross-Linked Network

Recent Advances in the Fabrication and Environmental Science Applications of Cellulose Nanofibril-Based Functional Materials

Smart Antifreeze Hydrogels with Abundant Hydrogen Bonding for Conductive Flexible Sensors

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