Natural skin-inspired versatile cellulose biomimetic hydrogels

Lin, Fengcai; Wang, Zi; Shen, Yiming; Tang, Lirong; Zhang, Pinle; Wang, Yuefang; Chen, Yandan; Huang, Biao; Lu, Beili

doi:10.1039/c9ta10502f

Cited by 272 publications

(202 citation statements)

References 67 publications

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“…Self-adhesiveness and self-healing properties are additionally two of the favored properties of conductive organohydrogels, since self-adhesiveness is vital for the interface connection and the self-healing property can significantly extend the service life of the organohydrogels. [32,33] Given the catechol groups of oxidized polyphenols mimicking the mussel adhesion mechanism, the PTCM-Gly5 organohydrogels exhibit a unique selfadhesiveness applicable to a wide range of surfaces, including skin, wood, metal, plastic, rubber, glass, and polytetrafluorethylene (PTFE), as demonstrated in Figure 5a. The PTCM-Gly5 organohydrogel could also pull up a weight of 500 g, exhibiting excellent toughness and strength.…”

Section: Self-adhesiveness and Self-healing Capability Of The Ptcm-glmentioning

confidence: 99%

MXene‐Based Conductive Organohydrogels with Long‐Term Environmental Stability and Multifunctionality

Yuan

Xiang

et al. 2020

Adv Funct Materials

250

184

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Conductive hydrogels are promising interface materials utilized in bioelectronics for human-machine interactions. However, the low-temperature induced freezing problem and water evaporation-induced structural failures have significantly hindered their practical applications. To address these problems, herein, an elaborately designed nanocomposite organohydrogel is fabricated by introducing highly conductive MXene nanosheets into a tannic acid-decorated cellulose nanofibrils/polyacrylamide hybrid gel network infiltrated with glycerol (Gly)/water binary solvent. Owing to the introduction of Gly, the as-prepared organohydrogel demonstrates an outstanding flexibility and electrical conductivity under a wide temperature spectrum (from −36 to 60 °C), and exhibits long-term stability in an open environment (>7 days). Additionally, the dynamic catechol-borate ester bonds, along with the readily formed hydrogen bonds between the water and Gly molecules, further endow the organohydrogel with excellent stretchability (≈1500% strain), high tissue adhesiveness, and self-healing properties. The favorable environmental stability and broad working strain range (≈500% strain); together with high sensitivity (gauge factor of 8.21) make this organohydrogel a promising candidate for both large and subtle motion monitoring.

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Section: Self-adhesiveness and Self-healing Capability Of The Ptcm-glmentioning

confidence: 99%

MXene‐Based Conductive Organohydrogels with Long‐Term Environmental Stability and Multifunctionality

Yuan

Xiang

et al. 2020

Adv Funct Materials

250

184

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“…In addition to surfactants, many studies have used inorganic metal ions to perform specific functions [ 62 , 63 ]. For example, nanocellulose coated with tannic acid coordinated silver ions to form a sterilized and self-adhesive surface [ 64 ].…”

Section: Surface Modificationmentioning

confidence: 99%

Research Progress and Development Demand of Nanocellulose Reinforced Polymer Composites

Shen

Xue

et al. 2020

Polymers

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Nanocellulose is a type of nanomaterial with high strength, high specific surface area and high surface energy. Additionally, it is nontoxic, harmless, biocompatible and environmentally friendly and can be extracted from biomass resources. The surface groups of cellulose show high surface energy and binding activity on the nanoscale and can be modified by using various methods. Because nanocellulose has a high elastic modulus, rigidity and a low thermal expansion coefficient, it is an excellent material for polymer reinforcement. This paper summarizes the reinforcement mechanisms of nanocellulose polymer composites with a focus on the role of theoretical models in elucidating these mechanisms. Furthermore, the influence of various factors on the properties of nanocellulose reinforced polymer composites are discussed in combination with analyses and comparisons of specific research results in related fields. Finally, research focus and development directions for the design of high-performance nanocellulose reinforced polymer composites are proposed.

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“…Ag/TA/CNC nanocomplexes endow antibacterial, electric conductivity, adhesivity and super stretchability (> 4000 %) [63] PVA/CNF/TA CNF/TA improved mouldability, stretchable (> 2000 %) and endow antibacterial and antioxidant properties [64] PVA/TA-coated CNC TA/CNC endow the toughness & adhesivity [65] PVA/CNF, LN NPs both CNF and LN NPs improved the viscoelastic properties [66,67] PVA/HEC, glycerol, LN both HEC and LN improved stretchability, adhesivity and viscoelastic properties. Fe(III) increased the conductivity and adhesivity [68] GG/glycerol/PC-coated CNF/Fe(III) strain sensor PC/CNF boost mechanical properties and adhesivity while Fe(III) improved conductivity and adhesivity [69] PVA/Glycerol/PC/rGO strain sensor PC/rGO improved mechanical property, conductivity, adhesivity and mimicking the human skin touch feeling feature [70] PVA/CNF-PPy strain sensor CNF/PPy nanocomplex endow high electroconductivity, strength, plasticity, viscoelasticity, and stretchability.…”

Section: Sclgmentioning

confidence: 99%

“…[100] Moreover, addition of other ingredients to the boraxbased nanocomposite hydrogels have been evaluated for the fabrication of hybrid materials. For instance, addition of metal cations (such as Zn 2 + ) [61] can create supercapacitors or addition of polyphenols [63][64][65] can enhance the adhesivity and endow antioxidant property to the hydrogel. Especially, addition of metals such as Fe(III) and Al(III) to the hydrogels containing polyphenols increase the adhesivity dramatically [69] due to the complexation of these metals with phenolic groups.…”

Section: Nanocomposite Borax-based Hydrogelsmentioning

confidence: 99%

“…[110,111] Versatile biomimetic skin-like cellulose nanocomposite hydrogels were produced by incorporation of Ag NPs, TA, and CNC into the PVA/B hydrogels. [63] Combination of these components produced ultra-stretchable, selfhealing, antibacterial, adhesive and conductive hydrogels. For the fabrication of the hydrogel, first the CNC suspension in water was produced and its surface was modified with TA via oxidative polymerization of catecholic groups under alkaline condition.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

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Self‐healing Polyol/Borax Hydrogels: Fabrications, Properties and Applications

Seidi

Jin

Han

et al. 2020

The Chemical Record

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Self-healing polyol/borax hydrogels have found great applications in various areas; especially in sensors, flexible electronics and biomedical fields. In this review, fabrication and characteristics of various types of borax-based hydrogels are discussed. Mechanical properties and self-healing behaviors of these hydrogels are strongly affected by the types of polyol, ratio of polyol:borax, and concentration of each component. Incorporation of highly polar nanofillers (such as cellulose nanofibers) into hydrogels and fabrication of double-network structures have been employed as the promising strategies for improving the mechanical properties. Other additives have also been examined to generate nanocomposite hydrogels for a wide variety of uses; e. g. polyphenols for developing adhesives, conducting polymers, and hybrid structures based on carbon nanotubes and graphenes for electroconductivity, Ag and ZnO nanoparticles for antibacterial property, and quantum dots for fluorescence.

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Natural skin-inspired versatile cellulose biomimetic hydrogels

Abstract: A skin-like cellulose biomimetic hydrogel was prepared based on dynamic covalent chemistry, which realized the combination of ultra-stretchability, self-healing, adhesiveness, antibacterial and mechano-stimuli sensitivity within a single structure.

Cited by 272 publications

References 67 publications

MXene‐Based Conductive Organohydrogels with Long‐Term Environmental Stability and Multifunctionality

MXene‐Based Conductive Organohydrogels with Long‐Term Environmental Stability and Multifunctionality

Research Progress and Development Demand of Nanocellulose Reinforced Polymer Composites

Self‐healing Polyol/Borax Hydrogels: Fabrications, Properties and Applications

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