Polypyrrole-Doped Conductive Self-Healing Composite Hydrogels with High Toughness and Stretchability,Biomacromolecules

当前位置： X-MOL 学术 › Biomacromolecules › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Polypyrrole-Doped Conductive Self-Healing Composite Hydrogels with High Toughness and Stretchability
Biomacromolecules ( IF 5.5 ) Pub Date : 2021-02-17 , DOI: 10.1021/acs.biomac.0c01777
Lingling Zhao ₁ , Xin Li ₂ , Yan Li ₁ , Xuemiao Wang ₁ , Wu Yang ₁ , Jie Ren ₁

Affiliation

In recent years, hydrogels with self-healing capability and conductivity have become ideal materials for the design of electrodes, soft robotics, electronic skin, and flexible wearable devices. However, it is still a critical challenge to achieve the synergistic characteristics of high conductivity, excellent self-healing efficiency without any stimulations, and decent mechanical properties. Herein, we developed a ferric-ion (Fe³⁺) crosslinked acrylic acid and chitosan polymer hydrogel using embedded polypyrrole particles with features of high conductivity (2.61S·m^–1) and good mechanical performances (a tensile strength of 628%, a stress of 0.33 MPa, an elastic modulus of 0.146 MPa, and a toughness of 1.14 MJ·m^–3). In addition, the self-healing efficiency achieved 93% in tensile strength after healing in the air for 9 h without any external stimuli. Therefore, with these outstanding mechanical, self-healing, and conductive abilities all in one, it is possible to fabricate a new kind of soft material with wide applications.

中文翻译：

高韧性和可拉伸性的聚吡咯掺杂导电自修复复合水凝胶

近年来，具有自愈能力和导电性的水凝胶已成为设计电极，软机器人，电子皮肤和柔性可穿戴设备的理想材料。然而，实现高电导率，出色的自修复效率而无任何刺激以及良好的机械性能的协同特性仍然是一个严峻的挑战。本文中，我们使用嵌入的聚吡咯颗粒开发了一种铁离子（Fe ³⁺）交联丙烯酸和壳聚糖聚合物水凝胶，该颗粒具有高电导率（2.61S·m ^–1）和良好的机械性能（抗张强度为628％，应力为0.33 MPa，弹性模量为0.146 MPa，韧性为1.14 MJ·m ^–3）。此外，在空气中愈合9小时后，没有任何外部刺激，自愈效率达到了93％的拉伸强度。因此，通过将这些优异的机械，自愈和导电性能合而为一，可以制造出具有广泛用途的新型软材料。

更新日期：2021-03-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11