首页|Ultrathin and flexible MXene-contained electromagnetic interference shielding composite paper designed with a protective hydrogel film

Ultrathin and flexible MXene-contained electromagnetic interference shielding composite paper designed with a protective hydrogel film

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MXene-contained paper is a good choice to design ultrathin and flexible electromagnetic interference(EMI)shielding materials.However,the deficiencies in strength and stability of MXene-contained paper impede its practical applications.Herein,a composite paper was proposed to address the problems,in which a filter paper was modified with a three-layer structured surface via a facile layer-by-layer coat-ing procedure.Specifically,the TEMPO-oxidized cellulose nanofibers(TOCN)/cationic starch(CS)/MXene gel layer and TOCN/MXene nacre structure layer ensured the good EMI shielding and mechanical per-formances of the composite paper,while the uppermost TOCN/CS hydrogel film layer mainly protected MXene.The composite paper achieved an EMI SE of 40.3 dB at a thickness of merely 0.1894 mm(SE/t value of ca.212.8 dB mm-1,SSE/t values of ca.13216 dB cm2 g-1)and the total MXene dosage was 20 g m-2.Its tensile strength could be up to 11.7 MPa while the original filter paper was 6.4 MPa.Four pieces of this composite papers could be easily packed together to attain an EMI SE of nearly 70 dB.Importantly,the hydrogel film layer efficiently protected the MXene and maintained the EMI shielding performance of the composite paper when immersed in different liquids including water,HC1(1 M)and ethanol,due to the dense and compact structure of hydrogel film layer.This work provides a practical way to develop ultrathin,flexible and durable EMI shielding materials.

MXeneElectromagnetic interference shieldingNanocelluloseHydrogel

Jiasheng Wei、Lei Dai、Ping He、Meng Zhu、Feng Jiang、Zhaoxiang Zhou、Guiqiang Fei、Tingzhou Lei

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College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China

Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,China

Zhejiang Shunpu New Material Technology Co.,Ltd,Longyou 324404,China

College of Chemistry and Chemical Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China

National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization,Institute of Urban and Rural Mining,Changzhou University,Changzhou 213164,China

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国家自然科学基金国家自然科学基金国家自然科学基金Special Support Program for High Level Talents of Shaanxi Province and the Postdoctoral Science Foundation of Zhejiang Province

221782083190126522078189

2024

10.1016/j.jmst.2023.05.056

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.169(2)
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