文献类型：期刊文献

英文题名：A novel PVA/MWCNTs hydrogel with high toughness and electromagnetic shielding properties

作者：Xu, Yuhuan Tan, Yanyan Xue, Yu Pei, Meng Zhang, Daohai Liu, Shan Qin, Shuhao

第一作者：Xu, Yuhuan

通信作者：Zhang, DH[1];Liu, S[2];Qin, SH[3]

机构：[1]Guizhou Minzu Univ, Sch Chem Engn, Guiyang, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang, Peoples R China;[3]Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang, Peoples R China;[4]Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Guizhou, Peoples R China;[5]Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Peoples R China;[6]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China

第一机构：Guizhou Minzu Univ, Sch Chem Engn, Guiyang, Peoples R China

通信机构：corresponding author), Guizhou Minzu Univ, Sch Chem Engn, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Mat & Energy Engn, Guiyang 550003, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China.|贵州理工学院;

年份：2023

外文期刊名：POLYMER ENGINEERING AND SCIENCE

收录：;EI(收录号：20233414620572);Scopus(收录号：2-s2.0-85168599875);WOS:【SCI-EXPANDED(收录号:WOS:001051241500001)】；

基金：Guiyang Expert Work station, Grant/Award Number: ZJGZZ2021-07; Guizhou Minzu University Research Platform Grant, Grant/Award Number:GZMUGCZX[2021]01; Guizhou Provincial Science and Technology Program Project Grant, Grant/Award Numbers: CXTD[2021]005, GCC[2022]010-1; National Natural Science Foundation of China Project, Grant/Award Number: 52163001

语种：英文

外文关键词：electromagnetic shielding; mechanical properties; modified MWCNTs; poly(vinyl alcohol)

摘要：Carbon nanotubes (CNTs) are widely utilized as conductive fillers due to their high conductivity, lightweight, and ease of modification. However, their poor dispersion limits their otherwise excellent performance. In this study, we successfully prepared a high toughness, strong electromagnetic interference (EMI) shielding hydrogel by blending polyvinyl alcohol (PVA) hydrogel with multi-walled carbon nanotubes (MWCNTs) modified by anionic surfactant sodium dodecylbenzene sulfonate (SDBS) and (3-aminopropyl) triethoxysilane (KH550). We found that the modifiers can not only promote the uniform dispersion of MWCNTs but also improve the mechanical properties of the hydrogel. The results demonstrate that the stress (approximate to 14.86 MPA), elongation at break (233.9%), and compressive strength (approximate to 2.89 MPA) of PVA/MWCNTs composite hydrogel with 1 wt% MWCNTs and 5 wt% PVA were increased by 533.6%, 241.4%, and 206.5%, respectively. Encouragingly, the total electromagnetic shielding effectiveness (SET) is 123.6 dB at a thickness of 5 mm. In summary, this work provides a general approach to functionalizing MWCNTs, which has great potential for developing EMI shielding materials with high toughness.