One-step radiation synthesis of agarose/polyacrylamide double-network hydrogel with extremely excellent mechanical properties

Lin, Tingrui; Bai, Qingwen; Peng, Jing; Xu, Ling; Li, Jiuqiang; Zhai, Maolin

doi:10.1016/j.carbpol.2018.07.070

Cited by 67 publications

(52 citation statements)

References 46 publications

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“…This phenomenon was due to that AG converted into linear molecules once the temperature above 85 °C (melting point). After cooling down, the clear solution transformed into AG single network hydrogel cross‐linked by a double helix formed by hydrogen bond of AG molecules during this process . When the freezing/thawing way employed, PVA crystallized at −15 °C to form crystallites as physical crosslinks that supporting the structure in the hydrogel.…”

Section: Resultsmentioning

confidence: 99%

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Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

et al. 2019

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As promising soft materials, various excellent properties of hydrogels have received widespread attention during recent years. Mechanical properties and self‐healing performance are required characteristics for hydrogels in practical applications. An important challenge is to develop hydrogels exhibiting mechanical performance and self‐recoverability through physical cross‐linking. In this work, the authors report a hydrogel consisting of a fully physically linked poly (vinyl alcohol)/agarose (PVA/AG) dual‐network, which is of high toughness and self‐healing properties. The synthesis process of the PVA/AG hydrogel is convenient, with AG as the first network, and hydrogen bonding and crystal‐associated PVA as the second network to form a dual physical crosslink. Due to this physical cross‐linking, the PVA/AG hydrogel has good mechanical properties (tensile strength of 6.5 MPa to 14.6 MPa, ductility of 168% to 214%). The highest compressive strength of hydrogel is up to 3.66 MPa, which is almost 8 times that of pure PVA hydrogel. In addition, it has excellent self‐healing properties without stimulation or healing agents. Compared to pure PVA hydrogel, PVA/AG hydrogels have higher thermal stability due to higher decomposition temperatures and lower degradation rates. In this study, the authors also initially explore the potential application of obtained hydrogel.

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Section: Resultsmentioning

confidence: 99%

“…However, when the AG content was 7.5%, the SR increased as compared with the PVA hydrogel. This was because a large number of hydrophilic groups in PVA and AG could promote the diffusion of water . The hydrophilicity on the surface of the hydrogel enhanced, thereby improving the swelling property …”

Section: Resultsmentioning

confidence: 99%

Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

et al. 2019

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“…Traditional cellulose‐ or chitin‐based materials are formed through hydrogen bonding and hydrophobic interactions as well as chain entanglements, accompanied by a certain degree of crystallization. Various cross‐linking methods have been developed [ 36 ] and are mainly categorized into two kinds: chemical cross‐linking approaches ( i.e ., radical polymerization, [ 37 ] high energy irradiation, [ 38 ] and enzyme cross‐linking [ 39,40 ] ) and physical cross‐linking strategies (such as ionic interactions, [ 41,42 ] hydrogen bonding interactions [ 43 ] and protein interactions [ 44 ] ). However, all these cross‐linked cellulose‐ or chitin‐based materials are brittle, severely constraining their use in practical applications.…”

Section: Aggregate Structure Regulation Approachesmentioning

confidence: 99%

High‐Strength and Tough Crystalline Polysaccharide‐Based Materials^†

2020

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Due to the increasing public awareness of environmental issues and the shortage of resources, the focus on products made from renewable sources to fulfill the sustainable development of modern society has intensified. Natural crystalline polysaccharides have been studied for a long time and are among the most abundant renewable resources in the world. High‐performance materials have been fabricated using crystalline polysaccharides such as cellulose and chitin. For practical applications, the mechanical performance of polysaccharide‐based materials is critical. In this review, we focus on the methods for constructing high‐strength and high‐toughness crystalline polysaccharide‐based materials. This review elucidates the three approaches of aggregate structure regulation, bioinspiration and mineralization, and the use of crystalline polysaccharides as matrices for reinforcing the mechanical properties of nanocomposites.

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“…The double network (DN) procedure for hydrogels fabrication was employed by using various polymer systems and different initiation methods. In order to synthesize the DN hydrogels in the research article of Zhai team, devoted to the facile one‐step radiation method to synthesize agarose/polyacrylamide (AG/PAM) double‐network, there are also mentioned 1) the one‐step initiator‐induced polymerization method of the calcium ion crosslinked alginate/ polyacrylamide DN hydrogel, 2) the healing‐cooling and initiator‐induced polymerization method, 3) the initiator‐induced polymerization and ion‐exchange method, and 4) the initiator‐induced polymerization and freezing‐drying method . The new AG/PAM double‐network hydrogel system prepared by this one‐step radiation method was proved presenting excellent tensile strength of 1263 ± 59 kPa, an elongation at break of 3406 ± 143%, highest compression strength of 140 ± 3 MPa, and also a fracture compression strain of above 99.9%.…”

Section: Agarosementioning

confidence: 99%

Advancement in the Biomedical Applications of the (Nano)gel Structures Based on Particular Polysaccharides

Chiriac¹,

Ghilan²,

Neamţu³

et al. 2019

Macromolecular Bioscience

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/mabi.201900187. Nanogels (Nano)gels from macromolecular compounds-natural, synthetic, or a combination thereof, suitable crosslinkers-and conferred characteristicssuch as degradability, size, charge, amphiphilicity, responsiveness, and softness-are capable of responding to the challenges imposed by bioengineering applications. Polysaccharide-based gels have received particular attention in this field. This review addresses recent advancement in the use of (nano)gel structures prepared only from compounds based on gellan gum, heparin, chondroitin sulfate, carrageenan, guar gum, galactose, or agarose, which represent an important part of the special class of natural polymers, the polysaccharides. Also, future trends are taken into discussion regarding the (nano)gels' use in biomedical applications such as biomimetics, biosensors, artificial muscles, and chemical separations in relation with their ability to be used as a vehicle for various biomolecules due to their physicochemical properties, biocompatibility, and biodegradability.

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One-step radiation synthesis of agarose/polyacrylamide double-network hydrogel with extremely excellent mechanical properties

Cited by 67 publications

References 46 publications

Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

High‐Strength and Tough Crystalline Polysaccharide‐Based Materials^†

Advancement in the Biomedical Applications of the (Nano)gel Structures Based on Particular Polysaccharides

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One-step radiation synthesis of agarose/polyacrylamide double-network hydrogel with extremely excellent mechanical properties

Cited by 67 publications

References 46 publications

Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

Self‐Healing Hydrogel of Poly (vinyl alcohol)/Agarose with Robust Mechanical Property

High‐Strength and Tough Crystalline Polysaccharide‐Based Materials†

Advancement in the Biomedical Applications of the (Nano)gel Structures Based on Particular Polysaccharides

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Product

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High‐Strength and Tough Crystalline Polysaccharide‐Based Materials^†