通过疏水作用合成齐聚物水凝胶并应用于柔性传感器

IF 2.2 4区 化学 Q3 CHEMISTRY, PHYSICAL Colloid and Polymer Science Pub Date : 2024-07-03 DOI:10.1007/s00396-024-05289-0
Junfang Chang, Leqi Wu, Weijun Wu, Zhiyong Guo, Sui Wang, Jie Mao
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引用次数: 0

摘要

柔性应变传感器需要在目标发生随机和重复变形时获得稳定的信号。因此,优异的机械性能、粘附性能和导电性能至关重要。本研究设计并合成了一种可拉伸、自粘性和导电性离子水凝胶。在十二烷基硫酸钠(SDS)表面活性剂的作用下,疏水性单体甲基丙烯酸硬脂酸酯(C18)与亲水性单体[2-(甲基丙烯酰氧基)乙基]二甲基-(3-磺丙基)氢氧化铵(SBMA)通过胶束共聚合成了双链态水凝胶。与传统的化学交联水凝胶相比,断裂伸长率提高了 934%。用单宁酸(TA)修饰的多壁碳纳米管(MWCNTs)具有良好的分散性和稳定性,可作为功能填料添加到水凝胶中,增强传感器的拉伸和导电性能。在各种机制的协同作用下制备的水凝胶柔性传感器具有良好的机械性能、粘合性能和导电性能。此外,由于原材料固有的抗菌特性,在体外生物相容性良好的前提下,该水凝胶对大肠杆菌和金黄色葡萄球菌的杀菌率高达 99%,在人体运动监测和医疗保健领域具有巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Synthesis of zwitterionic hydrogels by hydrophobic interaction and application of flexible sensors

Flexible strain sensors need to obtain a stable signal as the target undergoes random and repeated deformation. Therefore, excellent mechanical properties, adhesion properties, and electrical conductivity are essential. In this study, a stretchable, self-adhesive, and conductive ionic hydrogel was designed and synthesized. Zwitterionic hydrogels were synthesized by micellar copolymerization of hydrophobic monomer methacrylate stearic acid (C18) with hydrophilic monomers [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA) in the presence of sodium dodecyl sulfate (SDS) surfactant. Compared with traditional chemical cross-linked hydrogels, the elongation at break is increased by 934%. The multi-walled carbon nanotubes (MWCNTs) modified with tannic acid (TA) have good dispersibility and stability, which can be added to the hydrogel as a functional filler to enhance the tensile and conductive properties of the sensor. The hydrogel flexible sensor prepared under the synergistic action of various mechanisms has good mechanical properties, bonding properties, and conductive properties. In addition, due to the inherent antibacterial properties of the raw material, the hydrogel has a bactericidal ratio of up to 99% against E. coli and S. aureus under the premise of good biocompatibility in vitro, which has great potential in the field of monitoring human movement and healthcare.

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来源期刊
Colloid and Polymer Science
Colloid and Polymer Science 化学-高分子科学
CiteScore
4.60
自引率
4.20%
发文量
111
审稿时长
2.2 months
期刊介绍: Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.
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