MXene/bacterial cellulose/Fe3O4/methyltrimethoxylsilane flexible film with hydrophobic for effective electromagnetic shielding

Qinggang Peng; Yue Li; Chao Gao; Zhongming Liu; Xiaohui Wang; Pedram Fatehi; Shoujuan Wang; Fangong Kong

doi:10.1016/j.ijbiomac.2023.125195

MXene/bacterial cellulose/Fe₃O₄/methyltrimethoxylsilane flexible film with hydrophobic for effective electromagnetic shielding

Int J Biol Macromol. 2023 Jul 15:243:125195. doi: 10.1016/j.ijbiomac.2023.125195. Epub 2023 Jun 1.

Authors

Qinggang Peng¹, Yue Li¹, Chao Gao¹, Zhongming Liu¹, Xiaohui Wang¹, Pedram Fatehi¹, Shoujuan Wang², Fangong Kong³

Affiliations

¹ State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada.
² State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada. Electronic address: wshj@qlu.edu.cn.
³ State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada. Electronic address: kfg@qlu.edu.cn.

PMID: 37270119
DOI: 10.1016/j.ijbiomac.2023.125195

Abstract

Electromagnetic (EM) pollution has become a serious problem in modern society as it affects human lives. The fabrication of strong and highly flexible materials for electromagnetic interference (EMI) shielding applications is extremely urgent. Herein, a MXene Ti₃C₂T_x/Fe₃O₄ & bacterial cellulose (BC)/Fe₃O₄&Methyltrimethoxysilane (MTMS) flexible hydrophobic electromagnetic shielding film (SBTF_X-Y, X and Y were the number of layers of BC/Fe₃O₄ and the layers of Ti₃C₂T_x/Fe₃O₄), was fabricated. In the prepared film, MXene Ti₃C₂T_x absorbs a large amount of radio waves through polarization relaxation and conduction loss. Because of its extremely low reflectance of electromagnetic waves, BC@Fe₃O₄, as the outermost layer of the material, allows more electromagnetic waves to incident inside the material. The maximum electromagnetic interference (EMI) shielding efficiency (SE) of 68 dB was achieved for the composite film at 45 μm thickness. What's more, the SBTF_X-Y films show excellent mechanical properties, hydrophobicity and flexibility. The unique stratified structure of the film provides a new strategy for designing high-performance EMI shielding films with excellent surface and mechanical properties.

Keywords: Bacterial cellulose; Electromagnetic shielding; Fe(3)O(4); MXene Ti(3)C(2)T(X); Methyltrimethoxysilane.

MeSH terms

Bacteria*
Cellulose
Electromagnetic Phenomena*
Environmental Pollution
Humans

Substances

MXene
Cellulose