物理化学学报 >> 2026, Vol. 42 >> Issue (10): 100354.doi: 10.1016/j.actphy.2026.100354

论文 上一篇    

构建基于Fe3O4@ZIF-67的柔性多功能水凝胶及其电磁干扰屏蔽与应变传感性能

刘晓南1, 雷智2, 卢茂霞2, 马冬威3, 王川4,*(), 吴泽宏5, 张道海2,*()   

  1. 1 贵州医科大学附属医院医院感染科, 贵州 贵阳 550025
    2 贵州民族大学化学工程学院, 贵州 贵阳 550025
    3 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
    4 贵州医科大学附属医院骨科, 贵州 贵阳 550025
    5 贵州医科大学临床医学院, 贵州 贵阳 550025
  • 收稿日期:2026-05-03 修回日期:2026-06-15 录用日期:2026-06-29 发布日期:2026-09-03
  • 通讯作者: Email: wangchuan@gmc.edu.cn (王川)zhangdaohai6235@163.com (张道海)

Construction of Fe3O4@ZIF-67 based flexible multifunctional hydrogels for electromagnetic interference shielding and strain sensing

Xiaonan Liu1, Zhi Lei2, Maoxia Lu2, Dongwei Ma3, Chuan Wang4,*(), Zehong Wu5, Daohai Zhang2,*()   

  1. 1 Department of Hospital Infection Management, Affiliated Hospital of Guizhou Medical University, Guiyang 550025, Guizhou Province, China
    2 School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou Province, China
    3 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
    4 Department of Orthopedics, Affiliated Hospital of Guizhou Medical University, Guiyang 550025, Guizhou Province, China
    5 Clinical Medical College, Guizhou Medical University, Guiyang 550025, Guizhou Province, China
  • Received:2026-05-03 Revised:2026-06-15 Accepted:2026-06-29 Published:2026-09-03
  • Contact: Email: wangchuan@gmc.edu.cn (Chuan Wang)zhangdaohai6235@163.com (Daohai Zhang)

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摘要：

传统电磁屏蔽材料已难以满足现代柔性电子设备与先进信息技术的快速发展需求。水凝胶凭借其优异的柔韧性、粘附性、快速响应性、易加工和功能修饰等特点，为开发柔性可穿戴电子设备提供了广阔前景。本研究通过反向生长策略和一锅聚合法制备了PAM/CMC/Fe3O4@ZIF-67多功能复合水凝胶。首先，利用乙二醇辅助溶剂热法制备花状微球结构的Fe3O4，随后将其整合到ZIF-67表面，获得Fe3O4@ZIF-67复合材料。随后，将复合材料引入含有PAM/CMC的三维网络中，形成兼具柔韧性、高含水量与导电磁性协同效应的多功能水凝胶。实验结果表明：PCZF-2水凝胶的平均电磁干扰屏蔽效能(EMI SE)为36.08 dB，电导率为0.93 S m−1，压缩模量为398.0 kPa，压缩变形率为64.1%，含水量为625.72%，吸水率为240.82%。优异的附着能力和和高灵敏度(0–100%，GF = 1.40，R2 = 0.995)，实现了水凝胶人机交互友好的应变传感。本研究为开发兼具电磁屏蔽能效和传感功能的一体化韧性多功能材料提供了一种有效策略。

关键词: Fe3O4, ZIF-67, 反生长法, 水凝胶, 电磁干扰屏蔽

Abstract:

Traditional electromagnetic shielding materials can no longer meet the rapidly growing demands of modern flexible electronic devices and advanced information technologies. Owing to their excellent flexibility, adhesion, stimuli responsiveness, and ease of processing and functional modification, hydrogels offer promising opportunities for developing flexible wearable electronic devices. In this study, PAM/CMC/Fe3O4@ZIF-67 multifunctional composite hydrogels were fabricated through a reverse-growth strategy combined with a one-pot polymerization method. First, flower-like Fe3O4 microspheres were prepared via an ethylene glycol-assisted solvothermal method and subsequently coupled with ZIF-67 through a reverse-growth strategy to obtain the Fe3O4@ZIF-67 composite. Subsequently, the composites were introduced into a PAM/CMC-based three-dimensional network, forming a multifunctional hydrogel that integrates flexibility, high water content, and synergistic conductive–magnetic effects. The experimental results showed that the 3 mm-thick PCZF-2 hydrogels achieved an average EMI SE of 36.08 dB. It also exhibited a conductivity of 0.93 S m−1, a compressive modulus of 398.0 kPa, a compressive strain of 64.1%, a water content of 625.72%, and a swelling ratio of 240.82%. The hydrogel also exhibited excellent adhesion capability and high sensitivity (GF = 1.40 within the strain range of 0–100%, R2 = 0.995), enabling human–machine-interaction-friendly strain sensing. This study provides an effective strategy for constructing tough multifunctional materials with integrated electromagnetic interference shielding and strain-sensing functionalities.

Key words: Fe3O4, ZIF-67, Reverse-growth method, Hydrogel, Electromagnetic interference shielding