Self-healable poly(acrylic acid-<i>co</i>-maleic acid)/glycerol/boron nitride nanosheet composite hydrogels at low temperature with enhanced mechanical properties and water retention

Xue, Shishan; Wu, Yuanpeng; Guo, Meiling; Xia, Yuanmeng; Liú, Dan; Zhou, Hongwei; Lei, Weiwei

doi:10.1039/c9sm00179d

Cited by 61 publications

(36 citation statements)

References 51 publications

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“…As a result, even though there are numerous reported instances of self‐healable hydrogels, the hydrogels with both high strength and high self‐healability are rather unusual, which severely limit the applications of these hydrogels. Recently, a series of strategies, such as nanocomposite [ 4,22–27 ] and double‐network (DN) [ 8,28,29 ] approaches, have been developed to cope with the above‐mentioned dilemma. Especially, the DN hydrogels consisted of two asymmetric polymer networks, have demonstrated to be able to effectively reinforce the hydrogels and dissipate the energy during deformation.…”

Section: Introductionmentioning

confidence: 99%

A Facile Strategy for Synergistic Integration of Dynamic Covalent Bonds and Hydrogen Bonds to Surmount the Tradeoff between Mechanical Property and Self‐Healing Capacity of Hydrogels

Yang

et al. 2020

Macro Materials & Eng

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The self‐healable hydrogels have attracted increasing attention due to their promising potential for ensuring the durability and reliability of hydrogels. However, they still face a serious challenge to achieve a positive balance between mechanical and healing performance, especially for the room‐temperature autonomous self‐healable hydrogels. Herein, a simple but efficient strategy to fabricate a kind of dynamic boronate and hydrogen bonds dual‐crosslinked double network (DN) hydrogel based on a UV‐initiated one‐pot in situ polymerization of N‐acryloyl glycinamide (NAGA) in polyvinyl alcohol‐borax slime is reported. The obtained PN‐x/PB hydrogels, especially with high content of PNAGA, are shown to possess high mechanical strength, high toughness, and fatigue‐resistance properties as well as excellent self‐healability at room temperature (nearly 88% self‐healing efficiency based on the strain compression test), due to the dynamic DN structure, and the combination of the adaptable and reconfigurable dynamic boronate bonds and hydrogen bonds. Considering the easily available materials and simple preparation process, this novel strategy should offer not only a kind of dynamic DN hydrogel with robust mechanical performance and high self‐healing capability, but also enrich the methodological toolbox for synergistic integration of dynamic covalent bonds and hydrogen bonds to surmount the tradeoff between mechanical properties and self‐healing capacity of hydrogels.

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Section: Introductionmentioning

confidence: 99%

A Facile Strategy for Synergistic Integration of Dynamic Covalent Bonds and Hydrogen Bonds to Surmount the Tradeoff between Mechanical Property and Self‐Healing Capacity of Hydrogels

Yang

et al. 2020

Macro Materials & Eng

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“…With further increase in the f‐BNNS content to 0.3 wt%, the tensile strength of the hydrogel decreased to 0.069 MPa due to the agglomeration of f‐BNNS. [ 18 ] Simultaneously, the tensile strain of hydrogel with 0.2 wt% f‐BNNSs was as high as 1457%, which was 772% of the pristine one (Figure 5c). The toughness of hydrogel with 0.2 wt% f‐BNNSs was also increased from 0.04 to 0.82 MJ m −3 , increased by 1950% (Figure S5, Supporting Information).…”

Section: Resultsmentioning

confidence: 98%

“…[ 24 ] As a result, the P(MAH‐β‐CD‐ co ‐NIPAM)/f‐BNNS hydrogels possessed excellent strength and tensile strain, making it superior to the majority of the reported PNIPAM‐based hydrogels (Figure 5e). [ 2,16–20,32 ] Moreover, the tensile strain of the P(MAH‐β‐CD‐ co ‐NIPAM)/f‐BNNS hydrogel is much higher than those of most nanocomposite hydrogels, which indicated that f‐BNNSs are ideal nanofillers because of strong dynamic interactions between f‐BNNSs and PNIPAM matrix. [ 26 ]…”

Section: Resultsmentioning

confidence: 99%

“…d) The mechanism for the high strength and strain of P(MAH‐β‐CD‐ co ‐NIPAM)/f‐BNNS hydrogel. e) Tensile strength versus tensile strain chart of various PNIPAM‐based hydrogels and nanocomposite hydrogels reported in the literature: boron nitride nanosheets (BNNS)/clay/PNIPAM gel, [ 16 ] carbon nanotubes (CNTs)/PNIPAM gel, [ 2 ] CNT composite gel, [ 37 ] graphene oxide (GO)/PNIPAM gel, [ 20 ] Laponite/PNIPAM gel, [ 32 ] BNNS composite gel, [ 18 ] AgCl/polyvinyl alcohol/polyethylene glycol/chitosan (AgCl/PVA/PEG/CS) gel, [ 38 ] polyacrylamide/Au@polydopamine (PAM/Au@PDA) gel, [ 17 ] and Al‐alginate/PNIPAM gel. [ 19 ]…”

Section: Resultsmentioning

confidence: 99%

“…Recently, several nanofillers have been introduced PNIPAM hydrogels to improve mechanical or swelling properties. [ 2,16–19 ] For example, Xu and co‐workers reported a nanofiller‐reinforced hydrogel by combing biocompatible boron nitride nanosheets (BNNSs), clay, and PNIPAM. With 0.16 wt% BNNSs, the tensile strength of PNIPAM hydrogel was increased from 0.02 to 0.04 MPa, increasing by 100%.…”

Section: Introductionmentioning

confidence: 99%

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Highly Swellable and Stretchable Thermoresponsive Hydrogels Enabled by Functionalized Boron Nitride Nanosheets

Guo

Zhang

et al. 2020

Macro Materials & Eng

Self Cite

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Thermoresponsive hydrogels with high stretchability and large swelling ratio are promising materials for fabricating soft devices, sensors, artificial muscles, etc. However, it remains a challenge to achieve these properties simultaneously within one hydrogel. Herein, highly swellable and stretchable thermoresponsive hydrogels are developed by incorporating functionalized boron nitride nanosheets (f‐BNNSs) into poly(maleic anhydride functionalized β‐cyclodextrin‐co‐N‐isopropylacrylamide) hydrogel. In such hydrogels, the dynamic host–guest interactions between f‐BNNSs and polymer matrix act as sacrificial bonds to efficiently dissipate energy, and the homogeneous covalent cross‐linking network of polymer leads to a smooth stress propagation, which enables the hydrogels to obtain excellent mechanical properties, such as remarkable strength (up to 0.15 MPa) and outstanding stretchability (up to 1457%). What is more, the resultant hydrogel also exhibits excellent thermoresponsive properties (swelling rate up to 5000% at 25 °C and deswelling rate down to 6% at 50 °C). Thus, this work offers a promising strategy to fabricate highly swellable and stretchable thermoresponsive hydrogels for potential soft actuators and bionic robotics applications.

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Demonstration of Environmentally Stable, Broadband Energy Dissipation via Multiple Metal Cross‐Linked Glycerol Gels

Cazzell

Duncan

Kingsborough

et al. 2021

Adv Funct Materials

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Rapid damping of interfaces experiencing vibrations is critical to the performance of many complex mechanical systems ranging from airplanes to human bodies. Current synthetic materials utilized in vibration damping are limited by either their damping frequency range, tunability, or environmental stability. Here, it is shown how single metal ion cross‐linked hydrogels exhibit tunable damping across a large frequency range and multiple metal ion hydrogels exhibit broadband damping within a single material. Additionally, an enhanced resistance to freezing and dehydration is shown with the use of glycerol as a cosolvent. It is expected that material design principles presented here will help advance the development of programmable damping materials better able to meet the demands of sustained operation under broad environmental conditions.

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Self-healable poly(acrylic acid-co-maleic acid)/glycerol/boron nitride nanosheet composite hydrogels at low temperature with enhanced mechanical properties and water retention

Abstract: A self-healable poly(acrylic acid-co-maleic acid) hydrogel at low temperature with excellent mechanical properties and water retention was fabricated.

Cited by 61 publications

References 51 publications

A Facile Strategy for Synergistic Integration of Dynamic Covalent Bonds and Hydrogen Bonds to Surmount the Tradeoff between Mechanical Property and Self‐Healing Capacity of Hydrogels

A Facile Strategy for Synergistic Integration of Dynamic Covalent Bonds and Hydrogen Bonds to Surmount the Tradeoff between Mechanical Property and Self‐Healing Capacity of Hydrogels

Highly Swellable and Stretchable Thermoresponsive Hydrogels Enabled by Functionalized Boron Nitride Nanosheets

Demonstration of Environmentally Stable, Broadband Energy Dissipation via Multiple Metal Cross‐Linked Glycerol Gels

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