Highly Stretchable, Mechanically Strong, Tough, and Self‐Recoverable Nanocomposite Hydrogels by Introducing Strong Ionic Coordination Interactions

Hu, Yang; Han, Wenfang; Zhou, Wuyi; Yang, Zhuohong; Wang, Chaoyang

doi:10.1002/macp.201600398

Cited by 34 publications

(22 citation statements)

References 45 publications

(46 reference statements)

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“…Representative examples will be briefly reviewed in this section. Hu et al [ 225 ] developed a tough nanocomposite hydrogel by using graphene oxide (GO) nanosheets and Fe 3+ ions as dual noncovalent crosslinkers. Mixing GO nanosheets with poly(acrylamide‐ co ‐acrylic acid) (p(AAm‐ co ‐AAc)) chains triggered the formation of H‐bonds.…”

Section: Dynamic Materials Crosslinked By the Combination Of Distinct...mentioning

confidence: 99%

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Zhang

Watuthanthrige

Wanasinghe

et al. 2021

Adv Funct Materials

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Dynamic materials (DMs) or dynamers have potential applications across a broad range of material science challenges. These applications include sustainable materials as a part of the circular plastics economy, advanced materials with tailored high stress properties and biomedical agents. DMs are comprised of polymers that crosslinked through reversible covalent and noncovalent linking groups. This group provides reversible bonds, which impart properties such as (re)healing, adaptability, toughness into a material. The nature of the linker dictates the dynamer's stability and dynamic properties, although for many applications one linker alone cannot give materials with complex multiresponsive functions. The combination of multiple dynamic linkers can introduce complementary functionalities into a single material. This combination of linkers enhances the collective material properties by matching their strengths and offsetting the weaknesses, or by selecting linkers for specific functions, such as one linker for rapid exchange and the other to respond to external stimuli. This contribution highlights the possibilities and unique features of materials containing multiple dynamic linkers, reviewing both fundamental discoveries of materials possessing multiple dynamic bonds and applications facilitated by the presence of multiple linking group chemistry.

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Section: Dynamic Materials Crosslinked By the Combination Of Distinct...mentioning

confidence: 99%

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Zhang

Watuthanthrige

Wanasinghe

et al. 2021

Adv Funct Materials

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“…There are few energy dissipation mechanisms to delay the propagation of the break. Recently, to better dissipate energy and improve the recoverability and fatigue resistance, a unique hybrid cross-linking network concept has been put forward to construct toughened NC hydrogels [ 43 , 44 , 45 , 46 ]. Zhao et al fabricated NC hydrogels with excellent compression and expansion properties [ 47 ] using a hybrid crosslinking process.…”

Section: Introductionmentioning

confidence: 99%

Tuning Physical Crosslinks in Hybrid Hydrogels for Network Structure Analysis and Mechanical Reinforcement

Liu

Shao

2019

Polymers

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Hydrogels with high mechanical strength are needed for a variety of industrial applications. Here, a series of hydrogels was prepared by introducing hybrid particles as hydrophobic association points to toughen the hydrogels. These toughened hydrogels were able to transfer an external mechanical force via the reorganization of the crosslinking networks. They exhibited an extraordinary mechanical performance, which was the result of the coordination between hydrophobic segments and hybrid particles. Herein, the connection between the dissipated energy of the inner distribution structure (on a small scale) and the mechanical properties (on a large scale) was conducted. Specifically, we inspected hydrogels of latex particles (LPs) with different chain lengths (C4, C12, C18) and studied their inner structural parameters, namely, the relationship between the density and molecular weight of crosslinking points to the mechanical strength and energy dissipation. Favorable traits of the hydrogels included compact internal structures that were basically free from defects and external structures with puncture resistance, high toughness, etc. Based on the experimental results that agreed with the theoretical results, this study provides a profound understanding of the internal structure of hydrogels, and it offers a new idea for the design of high-strength hybrid hydrogels.

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“…The homogenous structure of hydrogel ensures the polymer chains are evenly stretched to dissipate energy during deformation. This fabrication strategy has been extended to design tough nanocomposite hydrogels based on various nanoparticles which include polydopamine coated nanoclay [37], nanocrystalline cellulous [38], chitin nanocrystals [39], and graphene oxide nanosheets [40,41,42]. Non-covalent crosslinks, such as ionic interactions [40,41] and hydrogen bonds [37], were incorporated into the nanocomposite hydrogel to further toughen the network.…”

Section: Strategies To Construct Tough Hydrogelsmentioning

confidence: 99%

Recent Developments in Tough Hydrogels for Biomedical Applications

Liu

He²,

Zhang

et al. 2018

Gels

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A hydrogel is a three-dimensional polymer network with high water content and has been attractive for many biomedical applications due to its excellent biocompatibility. However, classic hydrogels are mechanically weak and unsuitable for most physiological load-bearing situations. Thus, the development of tough hydrogels used in the biomedical field becomes critical. This work reviews various strategies to fabricate tough hydrogels with the introduction of non-covalent bonds and the construction of stretchable polymer networks and interpenetrated networks, such as the so-called double-network hydrogel. Additionally, the design of tough hydrogels for tissue adhesive, tissue engineering, and soft actuators is reviewed.

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Highly Stretchable, Mechanically Strong, Tough, and Self‐Recoverable Nanocomposite Hydrogels by Introducing Strong Ionic Coordination Interactions

Cited by 34 publications

References 45 publications

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Complementary Dynamic Chemistries for Multifunctional Polymeric Materials

Tuning Physical Crosslinks in Hybrid Hydrogels for Network Structure Analysis and Mechanical Reinforcement

Recent Developments in Tough Hydrogels for Biomedical Applications

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