Enhanced mechanical and dielectric properties of lignocellulosic composite papers with biomimetic multilayered structure and multiple hydrogen-bonding interactions

Dexian Ji; Meiyun Zhang; Hao Sun; Baolong Yuan; Cong Ma; Zhuofan He; Yonghao Ni; Shunxi Song

doi:10.1016/j.ijbiomac.2024.136247

Enhanced mechanical and dielectric properties of lignocellulosic composite papers with biomimetic multilayered structure and multiple hydrogen-bonding interactions

Int J Biol Macromol. 2024 Oct 9:136247. doi: 10.1016/j.ijbiomac.2024.136247. Online ahead of print.

Authors

Dexian Ji¹, Meiyun Zhang², Hao Sun³, Baolong Yuan³, Cong Ma³, Zhuofan He³, Yonghao Ni⁴, Shunxi Song⁵

Affiliations

¹ College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China; Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
² College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China; Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science & Technology, Xi'an 710021, China. Electronic address: myzhang@sust.edu.cn.
³ College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China.
⁴ Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada. Electronic address: yonghao@unb.ca.
⁵ College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China; Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science & Technology, Xi'an 710021, China. Electronic address: songshunxi@sust.edu.cn.

PMID: 39393733
DOI: 10.1016/j.ijbiomac.2024.136247

Abstract

Lignocellulosic papers (LCP) are favored for electrical insulating applications due to their environmental friendliness, ease of processing, and cost-effectiveness. However, the loose structure and numerous pores inside LCP result in the poor mechanical and electrical insulating properties, posing challenges in meeting the requirements for the rapid upgrading of high-voltage electrical equipment. Herein, a 3D interconnective structure composed of 3D aramid nanofibers (ANF) and 2D carbonylated basalt nanosheets (CBSNs) is introduced to enhance the structure and the chemical bonding interactions of LCP. This is achieved by impregnating LCP into an ANF-CBSNs suspension, where the 3D interconnective ANF framework hosts numerous CBSNs. The resultant LCP/ANF-CBSNs (LCP/A-C) composite papers exhibit multilayered structure and multiple hydrogen-bonding interactions, demonstrating excellent mechanical and electrical insulating properties. Notably, the optimized LCP/A-C5 composite papers exhibit remarkable tensile strength (23.15 MPa) and dielectric breakdown strength (20.14 kV·mm^-1), respectively, representing 229 % and 145 % increase compared to those of the control LCP. These impressive properties are integrated with excellent bending ability, outstanding high temperature resistance, exceptional volume resistivity, and low dielectric constant and loss, demonstrating their potential as highly promising electrical insulating papers for advanced high-power electrical equipment.

Keywords: Electrical insulation; Hydrogen-bonding interactions; Lignocellulosic paper; Mechanical strength; Multilayered structures.