{"title":"Multifunctional CNT/cellulose-BN/PVA Composites Integrating Dual-continuous Network Structure with Gradient Conductivity for Electromagnetic Interference Shielding and Joule Heating","authors":"Xiao-Rui Wang, Ting-Ting Liu, Cheng-Hua Cui, Xin Xu, Liang-Qing Zhang","doi":"10.1007/s10118-025-3520-6","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, an architecture featuring a gradient conductive network structure and three-dimensional dual-continuous network structure is constructed in a carbon nanotubes/cellulose-boron nitride/poly(vinyl alcohol) (CNT/cellulose-BN/PVA) composite. Using cellulose aerogel as a template, CNT were incorporated into the cellulose template by vertically impregnating the CNT suspension. Following the impregnation of BN/PVA and high-pressure compression, three-dimensional dual-continuous network structure was successfully constructed in the CNT/cellulose-BN/PVA composite. The comprehensive performance of the composite, including electromagnetic interference (EMI) shielding and Joule heating performance, was investigated. The results indicate that the total EMI shielding effectiveness (SE) for the CNT/cellulose-BN/PVA composite reveals similar values for electromagnetic waves incident from different directions, but totally different shielding mechanisms. For the CNT/cellulose-BN/PVA composite with three impregnation cycles of CNT, the EMI SE values exceeded 39 dB for electromagnetic waves incident from both the high- and low-CNT-content sides. 93% of the microwaves were reflected when electromagnetic waves were incident from the high-CNT-content side, while the reflection coefficient decreased to 0.44 for the transverse direction. In addition, the construction of the dual-continuous network structure enabled the composite to exhibit both excellent electrical conductivity and good thermal conductivity simultaneously, endowing the material with good Joule heating performance. CNT/cellulose-BN/PVA composite films have significant potential for application as EMI shielding materials in extremely cold weather.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"44 3","pages":"803 - 812"},"PeriodicalIF":4.0000,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10118-025-3520-6","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
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Abstract
In this study, an architecture featuring a gradient conductive network structure and three-dimensional dual-continuous network structure is constructed in a carbon nanotubes/cellulose-boron nitride/poly(vinyl alcohol) (CNT/cellulose-BN/PVA) composite. Using cellulose aerogel as a template, CNT were incorporated into the cellulose template by vertically impregnating the CNT suspension. Following the impregnation of BN/PVA and high-pressure compression, three-dimensional dual-continuous network structure was successfully constructed in the CNT/cellulose-BN/PVA composite. The comprehensive performance of the composite, including electromagnetic interference (EMI) shielding and Joule heating performance, was investigated. The results indicate that the total EMI shielding effectiveness (SE) for the CNT/cellulose-BN/PVA composite reveals similar values for electromagnetic waves incident from different directions, but totally different shielding mechanisms. For the CNT/cellulose-BN/PVA composite with three impregnation cycles of CNT, the EMI SE values exceeded 39 dB for electromagnetic waves incident from both the high- and low-CNT-content sides. 93% of the microwaves were reflected when electromagnetic waves were incident from the high-CNT-content side, while the reflection coefficient decreased to 0.44 for the transverse direction. In addition, the construction of the dual-continuous network structure enabled the composite to exhibit both excellent electrical conductivity and good thermal conductivity simultaneously, endowing the material with good Joule heating performance. CNT/cellulose-BN/PVA composite films have significant potential for application as EMI shielding materials in extremely cold weather.
期刊介绍：
Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985.
CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.
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