High toughness and strong electromagnetic shielding properties of PAM/PEG dual network hydrogels  

作　　者：Kunlan Diao Yuhuan Xu Jingyu Du Teng Zhou Xiao Zhan Daohai Zhang Xiaosi Qi Shuhao Qin 

机构地区：[1]School of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China [2]College of Physics,Guizhou University,Guiyang 550025,China [3]National Engineering Research Center for Compounding and Modification of Polymer Materials,Guiyang 550014,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期747-755,共9页矿物冶金与材料学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.52163001);the Guizhou Provincial Science and Technology Program Project Grant,China(Qiankehe Platform Talents-CXTD[2021]005,Qiankehe Platform Talents-GCC[2022]010-1,Qiankehe Fuqi[2023]001,Qiankehe Platform Talents-GCC[2023]035,and Qiankehe Platform Talents-CXTD[2023]003);the Guizhou Minzu University Research Platform Grant,China(No.GZMUGCZX[2021]01);the Central Guided Local Science and Technology Development Funds Project,China(Qiankehe Zhong Yindi[2023]035);the Green Chemistry and Resource Environment Innovation Team of Guizhou Higher Education Institutions,China(Guizhou Education and Technology[2022]No.13);the Doctor Startup Fund of Guizhou Minzu University,China(No.GZMUZK[2024]QD77).

摘　　要：With the wide application of electromagnetic wave,a high performance electromagnetic shielding material is urgently needed to solve the harm caused by electromagnetic wave.Complete cross-linking strategy is adopted in this paper.Polyacrylamide(PAM)was synthesized by in-situ polymerization of acrylamide(AM)monomer.The obtained PAM was blended with polyethylene glycol(PEG)to prepare PAM/PEG hydrogels and form rigid support structures.Subsequently,the modified carbon nanotubes(S-CNTs)were incorpor-ated into sodium alginate(SA)and PAM/PEG.Finally,Na+was used to trigger SA self-assembly,which significantly improved the mechanical properties and electrical conductivity of the hydrogels,and prepared PAM/PEG/SA/S-CNTs-Na hydrogels with high tough-ness and strong electromagnetic interference(EMI)shielding efficiency(SE).The results showed that the compressive strength of PAM/PEG/SA/S-CNTs-Na hydrogel was 19.05 MPa,which was 7.69%higher than that of PAM/PEG hydrogel(17.69 MPa).More en-couraging,the average EMI SE of PAM/PEG/SA/S-CNTs-Na hydrogels at a thickness of only 3 mm and a CNTs content of 16.53wt%was 32.92 dB,which is 113.21%higher than that of PAM/PEG hydrogels(15.44 dB).

关 键 词：POLYACRYLAMIDE polyethylene glycol sodium alginate carbon nanotubes electromagnetic shielding 

分 类 号：TQ427.26[化学工程]