Hierarchically reversible crosslinking polymeric hydrogels with highly efficient self-healing, robust mechanical properties, and double-driven shape memory behavior

Xue, Shishan; Wu, Yuanpeng; Liu, Guanfei; Guo, Meiling; Liu, Yuhan; Zhang, Tao; Wang, Zhaoyi

doi:10.1039/d0ta10850b

Cited by 71 publications

(41 citation statements)

References 60 publications

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“…[ 1,8 ] The dynamic borate bonds in PVA/borax hydrogels and PVA/BNNS‐NH 2 composite hydrogels were revealed by the peak at 1415 and 1400 cm −1 , respectively, assigned to asymmetric stretching of B─O─C. [ 23,24 ] The shifting further confirmed the establishment of hydrogen bonds. The stretching vibration of B─O from residual B(OH) − 4 was observed at 847 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

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Boron Nitride Nanosheets Strengthened PVA/Borax Hydrogels with Highly Efficient Self‐Healing and Rapid pH‐Driven Shape Memory Effect

Xue

Liu

Lai

et al. 2021

Macro Materials & Eng

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Self‐healing hydrogels often possess poor mechanical properties which largely limits their applications in many fields. In this work, boron nitride nanosheets are introduced into a network of the poly(vinyl alcohol)/borax (PVA/borax) hydrogels to enhance the mechanical properties of the hydrogel without compromising the self‐healing abilities. The obtained hydrogels exhibit excellent mechanical properties with a tensile strength of 0.410 ± 0.007 MPa, an elongation at break of 1712%, a Young's Modulus of 0.860 ± 0.023 MPa, and a toughness of 3.860 ± 0.075 MJ m−3. In addition, the self‐healing efficiency of the hydrogels is higher than 90% within 10 min at room temperature. Benefiting from the excellent self‐healing properties, the shapeability of the hydrogel fragments is observed using different molds. In addition, the hydrogels display rapid pH‐driven shape memory effects and can recover to their original shape within 260 s. Overall, this work provides a new approach to hydrogels with integrated excellent mechanical properties, self‐healing abilities, and rapid pH‐driven shape memory effects.

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Section: Resultsmentioning

confidence: 99%

“…The dynamic borate bonds were verified by the peak at 701 cm −1 corresponding to bending vibration of B─O─B. [ 23,24 ] Furthermore, the peak at 1840 cm −1 assigned to stretching vibration of B─N demonstrated the existence of BNNS‐NH 2 . [ 20 ]…”

Section: Resultsmentioning

confidence: 99%

Boron Nitride Nanosheets Strengthened PVA/Borax Hydrogels with Highly Efficient Self‐Healing and Rapid pH‐Driven Shape Memory Effect

Xue

Liu

Lai

et al. 2021

Macro Materials & Eng

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“…One of those desired functional properties is shape memory, the ability of a materials to recovery its original shape with the right stimulus. 51,52 We created shape memory composites with excellent mechanical and selfhealing properties by infiltrating GO into PU matrix. with low cross-linking density and T g is an elastic material at room temperature.…”

Section: Shape Memory Properties Of the Pu-go-x Compositesmentioning

confidence: 99%

Multi‐functional polyurethane composites with self‐healing and shape memory properties enhanced by graphene oxide

Luo

Guo

et al. 2021

J of Applied Polymer Sci

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Development of shape memory polymer materials with integrated self-healing ability, shape memory property, and outstanding mechanical properties is a challenge. Herein, isophorone diisocyanate, polytetramethylene ether glycol, dimethylglyoxime, and glycerol have been used to preparation polyurethane by reacting at 80 C for 6 h. Then, graphene oxide (GO) was added and the reaction keep at 80 C for 4 h to obtain polyurethane/GO composite with selfhealing and shape memory properties. Scanning electron microscopy shows that the GO sheets were dispersed uniformly in the polyurethane matrix. The thermal stability was characterized by thermogravimetric analyses. The tensile test shows that the Young's modulus of the composites increases from 38.57 ± 4.35 MPa for pure polyurethane to 95.36 ± 10.35 MPa for the polyurethane composite with a GO content of 0.5 wt%, and the tensile strength increases from 6.28 ± 0.67 to 15.65 ± 1.54 MPa. The oxime carbamate bond and hydrogen bond endow the composite good self-healing property. The healing efficiency can reach 98.84%. In addition, the composite has excellent shape memory property, with a shape recovery ratio of 88.6% and a shape fixation ratio of 55.2%. This work provides a promising way to fabricate stimulusresponsive composite with versatile functions.

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“…Reversible hydrophobic interaction endows hydrogels with self‐healing without external stimuli 41–42 . Meng 43 used alginate (SA) and silk fibroin (RSF) with stearic methacrylate (C18M) as hydrophobic monomer as surfactant micelles to design a self‐healing hydrophobic association (HA) hydrogel.…”

Section: Dynamic Non‐covalent Bondmentioning

confidence: 99%

Recent progress of biomass based self‐healing polymers

Song

Kou

et al. 2021

J of Applied Polymer Sci

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Self‐healing polymer materials have been developed rapidly over the past 20 years, which can replace thermosetting materials to a certain extent, repair damage without manual intervention, prolong service life, and compress usage cost. The self‐healing polymer materials derived from biomass resources can reduce the dependence on traditional non‐renewable resources such as petroleum. The structures and properties of biomass based self‐healing polymer materials are of great significance for their processing, recycling and self‐healing. In this paper, the research progress of bio‐based self‐healing polymer materials based on dynamic non‐covalent bonds and dynamic covalent bonds including hydroxyl ester, Schiff base, disulfide bond, and hydroxyl urethane derived from vegetable oil, lignin, cellulose, vanillin and natural rubber were reviewed, and the dynamic non‐covalent bonds and dynamic covalent bonds were also introduced. The applications of various dynamic covalent bonds and dynamic non‐covalent bonds in the design and construction of polymer materials were reviewed, and the future development of dynamic covalent polymer materials was prospected.

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Hierarchically reversible crosslinking polymeric hydrogels with highly efficient self-healing, robust mechanical properties, and double-driven shape memory behavior

Abstract: Designing hydrogels with both excellent mechanical property and self-healing ability has attracted enormous attentions because applications of hydrogels are restricted in many fields due to their poor mechanical property and...

Cited by 71 publications

References 60 publications

Boron Nitride Nanosheets Strengthened PVA/Borax Hydrogels with Highly Efficient Self‐Healing and Rapid pH‐Driven Shape Memory Effect

Boron Nitride Nanosheets Strengthened PVA/Borax Hydrogels with Highly Efficient Self‐Healing and Rapid pH‐Driven Shape Memory Effect

Multi‐functional polyurethane composites with self‐healing and shape memory properties enhanced by graphene oxide

Recent progress of biomass based self‐healing polymers

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