Superfast Self‐Healing and Photothermal Active Hydrogel with Nondefective Graphene as Effective Additive,Macromolecular Materials and Engineering

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Superfast Self‐Healing and Photothermal Active Hydrogel with Nondefective Graphene as Effective Additive
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-06-17 , DOI: 10.1002/mame.202000172
Lina Du ₁ , Shuai Cao ₁ , Xiaoli Zheng ₁ , Lei Jiang ₂ , Zhiyong Ren ₂ , Jun Chen ₃ , Qun Xu _{1,

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Affiliation

2D graphene with high quality holds great promise in improving the performance of the hydrogels owing to its exceptional electronic, thermal, and mechanical properties. However, the structure defects existed in graphene restrict its further applications. Herein, a simple and green method of fabricating defect‐free graphene nanosheets with the assistance of supercritical carbon dioxide (SC CO₂) is designed. The graphene nanosheets directly assemble with acrylic acid monomer and clay, and a flexible semitransparent hydrogel is fabricated. Benefiting from the excellent properties of the defect‐free graphene, the hydrogel exhibits the high mechanical performance, superfast self‐healing capability, excellent conductivity, and super photothermal conversion efficiency. According to the advantages above, the graphene/poly(acrylic acid)/clay hydrogels can be used for intelligent sensors for disease diagnosis, artificial electronic skin, and military stealth materials in the near future.

中文翻译：

以无缺陷石墨烯为有效添加剂的超快自修复和光热活性水凝胶

高质量的二维石墨烯因其卓越的电子，热学和机械性能而在改善水凝胶的性能方面具有广阔的前景。然而，石墨烯中存在的结构缺陷限制了其进一步的应用。在此，借助超临界二氧化碳（SC CO _2）制造无缺陷石墨烯纳米片的简单而环保的方法）的设计。石墨烯纳米片直接与丙烯酸单体和粘土组装在一起，制备出柔性的半透明水凝胶。得益于无缺陷石墨烯的优异性能，水凝胶具有很高的机械性能，超快的自修复能力，出色的电导率和超光热转换效率。根据上述优点，石墨烯/聚丙烯酸/粘土水凝胶可在不久的将来用于疾病诊断，人造电子皮肤和军事隐形材料的智能传感器。

更新日期：2020-07-16

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