Bioinspired, mechanically durable MXene–pineapple leaf nanocellulose composite films with laminated structure for versatile electromagnetic interference shielding and thermal management

被引：0

作者：

Qian, Yangyang ^{[1
,2
]}

Liu, Yijun ^{[2
,3
]}

Wang, Chunyu ^{[2
]}

Wei, Yuan ^{[4
]}

Zhang, Yazeng ^{[2
]}

Chen, Gang ^{[2
]}

Zhang, Jianqiang ^{[5
]}

Shi, Bingfei ^{[5
]}

机构：

[1] College of Tea (Pu'er), West Yunnan University of Applied Sciences, Pu'er

[2] State Key Laboratory of Pulp and Paper Engineering, College of Light Industry and Engineering, South China University of Technology, Guangzhou

[3] Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural Sciences, Zhanjiang

[4] School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan

[5] School of Biology and Chemistry, Pu'er University, Pu'er

来源：

International Journal of Biological Macromolecules | 2025年 / 322卷

关键词：

EMI shielding film; Laminated structure; MXene; Pineapple leaf nanocellulose; Self-cleaning; Thermal management;

D O I：

10.1016/j.ijbiomac.2025.146583

中图分类号：

学科分类号：

摘要：

Research on the application of MXene/nanocellulose composite films in electromagnetic interference (EMI) shielding and thermal management devices has attracted considerable attention. However, it remains a challenge to create composite films that maintain a good balance between mechanical and application properties as well as ensure their remarkable structural stability and reliability under harsh conditions. Herein, an MXene–pineapple leaf nanocellulose-based composite film (MXene/PANLF (MP)/PALNF/Si) with a laminated structure and a biomimetic lotus leaf surface, combining mechanical robustness and versatility, is prepared via a two-step vacuum filtration, hot-pressing, and silicone coating method. Benefiting from the elaborate design of a nanocellulose supporting layer and an EMI shielding functional layer, an MP-III/PALNF composite film exhibits remarkable mechanical properties (tensile strength of 256.23 MPa and toughness of 33.68 MJ/m3), EMI shielding efficiency (SE) of up to 34 dB, and specific SE (SSE/t) as high as 5237.3 dB cm2 g−1. The silicone coating provides the hydrophilic MP-III/PALNF composite film with superhydrophobicity and outstanding self-cleaning capability, resulting in satisfactory durability against solutions, moisture, and structural deformation. In addition, an MP-III/PALNF/Si composite film exhibits high electrical conductivity, desirable low voltage–driven Joule heating properties, and good heat-dissipation capabilities. Therefore, we can say that our multifunctional MP-III/PALNF/Si composite film holds considerable potential for electromagnetic shielding and thermal management applications in smart and portable wearable electronics. © 2025 Elsevier B.V.

引用

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