Ultrastretchable hydrogels with strong damping effects

IF 2.3 4区 化学 Q3 POLYMER SCIENCE Polymer Journal Pub Date : 2024-02-21 DOI:10.1038/s41428-024-00894-w
Ming Ge, Lidong Zhang
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Abstract

Hydrogels can be stretched to several tens or even hundreds of times their original lengths, making them suitable for various applications. They have shown great potential for use in sensors and wearable devices. Although many attempts have been made to develop highly stretchable hydrogels, combining high stretchability and excellent damping remains a challenge. This study reports a method that significantly improved the stretchability and damping properties of hydrogels. The innovation is the replacement of traditional short-chain crosslinkers, such as N,N-methylenebis(acrylamide) (MBA), with long-chain crosslinkers. With increasing chain lengths, the spaces in the networks became larger, which reduced the interactions between the molecular chains in the network. As a result, the molecular chains of the network could slide when stretched, which greatly increased the mechanical elongation and enabled damping by the hydrogel (up to 85%). The maximum elongation reached 21800%, with a toughness of 11.32 MJ m−3. To the best of our knowledge, this elongation is superior to those in all previous reports. Our results provide a new approach for the development of highly stretchable and damping hydrogels. This study reports a method that significantly improved the stretchability and damping properties of hydrogels. The innovation is the replacement of traditional short-chain crosslinkers, such as N,N-methylenebis(acrylamide) (MBA), with long-chain crosslinkers. As a result, the molecular chains of the network could slide when stretched, which greatly increased the mechanical elongation and enabled damping by the hydrogel (up to 85%). The maximum elongation reached 21800%, with a toughness of 11.32 MJ m−3. This study provides a new approach for the development of highly stretchable and damping hydrogels.

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具有强阻尼效应的超拉伸水凝胶
水凝胶可以被拉伸到原始长度的几十倍甚至几百倍,因此适合各种应用。水凝胶在传感器和可穿戴设备方面显示出巨大的应用潜力。尽管人们已多次尝试开发高拉伸性水凝胶,但如何将高拉伸性和出色的阻尼结合起来仍是一项挑战。本研究报告介绍了一种可显著改善水凝胶拉伸性和阻尼特性的方法。创新之处在于用长链交联剂取代了传统的短链交联剂,如 N,N-亚甲基双(丙烯酰胺)(MBA)。随着链长的增加,网络中的空间变大,从而减少了网络中分子链之间的相互作用。因此,网络分子链在拉伸时可以滑动,这大大增加了机械伸长率,并使水凝胶产生阻尼(高达 85%)。最大伸长率达到 21800%,韧性为 11.32 MJ m-3。据我们所知,这一伸长率优于之前所有的报告。我们的研究结果为开发高伸展性和阻尼水凝胶提供了一种新方法。
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来源期刊
Polymer Journal
Polymer Journal 化学-高分子科学
CiteScore
5.60
自引率
7.10%
发文量
131
审稿时长
2.5 months
期刊介绍: Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews. Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below: Polymer synthesis and reactions Polymer structures Physical properties of polymers Polymer surface and interfaces Functional polymers Supramolecular polymers Self-assembled materials Biopolymers and bio-related polymer materials Polymer engineering.
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