Citation: Xiaonan Liu, Zhi Lei, Maoxia Lu, Dongwei Ma, Chuan Wang, Zehong Wu, Daohai Zhang. Construction of Fe₃O₄@ZIF-67 based flexible multifunctional hydrogels for electromagnetic interference shielding and strain sensing[J]. Acta Physico-Chimica Sinica, ;2026, 42(10): 100354. doi: 10.1016/j.actphy.2026.100354 shu

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

Xiaonan Liu ¹ ,
Zhi Lei ² ,
Maoxia Lu ² ,
Dongwei Ma ³ ,
Chuan Wang ^4,, ,
Zehong Wu ⁵ ,
Daohai Zhang ^2,,

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

Corresponding author: Chuan Wang, Daohai Zhang,
Received Date: 3 May 2026
Revised Date: 15 June 2026
Accepted Date: 29 June 2026

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.
- Fe₃O₄,
- ZIF-67,
- Reverse-growth method,
- Hydrogel,
- Electromagnetic interference shielding
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

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通讯作者: 陈斌, bchen63@163.com

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