使用具有良好灵敏度和透汽性的纤维素纳米纤维/中空聚吡咯微球的电子皮肤

IF 4.9 2区 工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD
Dican Hong, Gaosheng Li, Xuanru Wei, Chenyu Sun, Zhuqun Shi, Quanling Yang, Chuanxi Xiong
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引用次数: 0

摘要

电子皮肤作为一种能够模拟人体皮肤功能的智能材料,在长期稳定的健康监测、人机交互和医疗设备中发挥着至关重要的作用。然而,要实现高功能电子皮肤的应用,制造同时具有柔韧性、透气性和出色传感能力的压力传感器仍是一项挑战。在此,我们通过模板法制备了 2,2,6,6-四甲基哌啶基-1-氧氧化纤维素纳米纤维(TOCN)和中空聚吡咯(hPPy)微球的分散体。水凝胶薄膜是通过简单的混合和 Ca2+ 交联法获得的,然后进行干燥。所制备的 TOCN/hPPy 水凝胶薄膜具有良好的机械性能、优异的柔韧性和可靠的透汽性。值得注意的是,所开发的压阻压力传感器的灵敏度为 2.08 kPa-1,响应时间(90 毫秒)和恢复时间(150 毫秒)都很快。此外,该传感器的检测限低至 7.8 Pa,在高压下具有出色的稳定性,长期循环稳定性高达 12,500 次。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electronic skin using cellulose nanofiber/hollow polypyrrole microspheres with good sensitivity and vapor permeability

Electronic skin, as an intelligent material capable of simulating human skin functions, plays a crucial role in long-term stable health monitoring, human–computer interaction, and medical devices. However, to achieve the application of highly functional electronic skin, there remains a challenge in fabricating pressure sensors that simultaneously possess flexibility, vapor permeability, and exhibit excellent sensing capabilities. Herein, we prepared a dispersion of 2,2,6,6-tetramethylpiperidinyl-1-oxy oxidized cellulose nanofiber (TOCN) and hollow polypyrrole (hPPy) microspheres prepared through the template method. The hydrogel films were obtained by a simple blending approach and Ca2+ crosslinking followed by drying. The resulting TOCN/hPPy hydrogel films exhibited good mechanical properties, exceptional flexibility, and reliable vapor permeability. Notably, the developed piezoresistive pressure sensor demonstrated a sensitivity of 2.08 kPa−1, along with a fast response time (90 ms) and recovery time (150 ms). Furthermore, the sensor exhibited a low detection limit of 7.8 Pa, excellent stability at high pressures, and long-term cycling stability of up to 12,500 cycles.

Graphical abstract

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来源期刊
Cellulose
Cellulose 工程技术-材料科学:纺织
CiteScore
10.10
自引率
10.50%
发文量
580
审稿时长
3-8 weeks
期刊介绍: Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.
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