当前位置: X-MOL 学术Soft Matter › 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 multifunctional composite hydrogels with a dual crosslinked network
Soft Matter ( IF 3.4 ) Pub Date : 2021-08-17 , DOI: 10.1039/d1sm00682g
Xuemiao Wang 1 , Xin Li 2 , Lingling Zhao 1 , Meng Li 1 , Yan Li 1 , Wu Yang 1 , Jie Ren 1
Affiliation  

Soft hydrogel materials can be applied for use in biosensors, wearable electronics, artificial skin, soft robots, and so on. Practical applications require the materials to have various properties such as high conductivity, toughness, self-healing, stretchability, and so on. However, achieving all these features in a single material remains challenging at present. Herein, the fabrication of novel composite carboxymethylcellulose/poly(acrylic acid)/polypyrrole/Al(III) (CMC/PAA/PPy/Al(III)) multifunctional hydrogels using a simple method is described. The mechanical and electrical self-healing properties are attained by multiple dynamic coordinations between Al3+ ions and carboxyl groups from CMC and PAA together with the hydrogen bonding between PPy and the –OH of CMC and/or the −COOH of PAA. The electrical conductivity is achieved by the conductive polymer PPy, free ions, and the synergistic effect between the PPy particles and the free ions. Moreover, desirable mechanical properties, such as stretchability (1344%), toughness, and mouldability are realized by establishing a balance between the chemical and physical crosslinking networks, and the nanostructure of PPy. Thus, the resultant hydrogels have potential applications in electronic skin, biomedical implants, and wearable electronic devices in the future.

中文翻译:

具有双交联网络的聚吡咯掺杂导电自修复多功能复合水凝胶

软水凝胶材料可应用于生物传感器、可穿戴电子产品、人造皮肤、软机器人等。实际应用要求材料具有高导电性、韧性、自愈性、拉伸性等多种性能。然而,目前在单一材料中实现所有这些特征仍然具有挑战性。在此,描述了使用简单方法制备新型复合羧甲基纤维素/聚(丙烯酸)/聚吡咯/Al(III)(CMC/PAA/PPy/Al(III))多功能水凝胶。Al 3+之间的多重动态配位实现了机械和电自愈性能来自 CMC 和 PAA 的离子和羧基以及 PPy 和 CMC 的 -OH 和/或 PAA 的 -COOH 之间的氢键。导电性是通过导电聚合物 PPy、游离离子以及 PPy 颗粒与游离离子之间的协同作用实现的。此外,通过在化学和物理交联网络以及 PPy 的纳米结构之间建立平衡,实现了理想的机械性能,例如可拉伸性 (1344%)、韧性和可塑性。因此,由此产生的水凝胶在未来在电子皮肤、生物医学植入物和可穿戴电子设备中具有潜在的应用价值。
更新日期:2021-08-31
down
wechat
bug