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Research Article | Open Access

Preparation and Functional Design of Polyethyleneimine Reinforced Nanocellulose-based Aerogel

Jiacheng Lin1,2,3Tao Lin1,2,3( )Xuefeng Yin1,2,3Xue Cai1,2,3Xiaoyao Wei1,2,3Neng Zhang1,2,3
College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China
Key Laboratory of Paper Based Functional Materials of China National Light Industry, Xi'an, Shaanxi Province, 710021, China
Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi'an, Shaanxi Province, 710021, China
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Abstract

An aerogel electrode composed of conductive active materials based on nanocellulose aerogels can absorb more electrolytes, as well as enhance electron transport and ion diffusion channels. In the present study, aerogels with high strength were successfully prepared using 2, 2, 6, 6-tetramethyl-1-piperidinyloxy free radical (TEMPO)-oxidized cellulose nanofibrils (CNF) as a raw material and polyethyleneimine (PEI) as a cross-linking agent. Simultaneously, functional electrode materials were prepared via self-assembly. Based on our findings, PEI can significantly improve the water and solvent solubility and enhance the wet strength and shape recovery ability of CNF aerogels. Meanwhile, the minimum density of the aerogel reached 0.0160 g/cm3, the maximum porosity was approximately 98.5%, and the maximum stress approximated 0.02 MPa. Furthermore, electrochemical tests revealed that after self-assembly of reduced graphene oxide (RGO) and polyaniline (PANI) solution, the mass specific capacitance of the functional composite aerogel was approximately 92 F/g and exhibited good charge-discharge performance.

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Paper and Biomaterials
Pages 9-18
Cite this article:
Lin J, Lin T, Yin X, et al. Preparation and Functional Design of Polyethyleneimine Reinforced Nanocellulose-based Aerogel. Paper and Biomaterials, 2022, 7(1): 9-18. https://doi.org/10.1213/j.issn.2096-2355.2022.01.002

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Received: 17 September 2021
Accepted: 22 October 2021
Published: 25 January 2022
© 2022 Paper and Biomaterials

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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