An ultra-thin and highly efficient electromagnetic interference shielding composite paper with hydrophobic and antibacterial properties

Rui Teng; Jiaming Sun; Yuxia Nie; Anqi Li; Xue Liu; Wenye Sun; Bang An; Chunhui Ma; Shouxin Liu; Wei Li

doi:10.1016/j.ijbiomac.2023.127510

An ultra-thin and highly efficient electromagnetic interference shielding composite paper with hydrophobic and antibacterial properties

Int J Biol Macromol. 2023 Dec 31;253(Pt 8):127510. doi: 10.1016/j.ijbiomac.2023.127510. Epub 2023 Oct 20.

Authors

Rui Teng¹, Jiaming Sun¹, Yuxia Nie², Anqi Li², Xue Liu¹, Wenye Sun¹, Bang An¹, Chunhui Ma¹, Shouxin Liu³, Wei Li⁴

Affiliations

¹ College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Bio-based Material Science and Technology of the Ministry of Education, Northeast Forestry University, Harbin 150040, China.
² College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China.
³ College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Bio-based Material Science and Technology of the Ministry of Education, Northeast Forestry University, Harbin 150040, China. Electronic address: liushouxin@nefu.edu.cn.
⁴ College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Bio-based Material Science and Technology of the Ministry of Education, Northeast Forestry University, Harbin 150040, China. Electronic address: liwei820927@nefu.edu.cn.

PMID: 37865363
DOI: 10.1016/j.ijbiomac.2023.127510

Abstract

Facing the increasing electromagnetic interference (EMI) pollution in the living environment, it is a new trend to explore an efficient EMI shielding material with facile fabrication and a wide range of application scenarios. A hydrophobic composite paper composed of silver nanowires (AgNWs) and kapok microfibers cellulose (MFC) was modified by methyl trimethoxy silane (MTMS) through a simple method. As a result, the composite paper has a good EMI shielding effectiveness (EMI SE) of 61.7 dB with electrical conductivity of 695.41 S/cm. The modification of MTMS improved the thermal stability performance of composite paper, which also increased its water contact angle to 113°. The free silver ions (Ag⁺) released from AgNWs can kill surrounding microbial bacteria, endowing the composite paper with good antibacterial property. Water resistance and antibacterial property enable MTMS/AgNWs/MFC composite paper to cope with complex application environments.

Keywords: Cellulose composite paper; Electromagnetic interference; Hydrophobic modification.

MeSH terms

Anti-Bacterial Agents / pharmacology
Electric Conductivity
Methylcellulose
Nanowires*
Silver / pharmacology
Water

Substances

Silver
Anti-Bacterial Agents
Methylcellulose
Water