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Polymers obtained from biomass are promising alternatives to petro-based polymers owing to their low cost, biocompatibility, and biodegradability. Lignin, a complex aromatic polymer containing several functional hydrophilic and active groups including hydroxyls, carbonyls, and methoxyls, is the second most abundant biopolymer in plants. In particular, sustainable lignin-based gels are emerging as an appealing material platform for developing energy- and sensing-related applications owing to their attractive and tailorable physiochemical properties. This study describes the preparation strategies of lignin-based gels according to previously reported methods, with significant attention on the diverse performance of lignin-derived gel materials. Additionally, a detailed review of lignin-based gels utilized as an important resource in diverse fields is provided. Finally, a future vision on challenges and their possible solutions is presented.


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Advances Toward Sustainable Lignin-based Gel for Energy Storage and Smart Sensing

Show Author's information Yufan FengJie YuChangyou Shao( )Runcang Sun( )
Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034, China

Abstract

Polymers obtained from biomass are promising alternatives to petro-based polymers owing to their low cost, biocompatibility, and biodegradability. Lignin, a complex aromatic polymer containing several functional hydrophilic and active groups including hydroxyls, carbonyls, and methoxyls, is the second most abundant biopolymer in plants. In particular, sustainable lignin-based gels are emerging as an appealing material platform for developing energy- and sensing-related applications owing to their attractive and tailorable physiochemical properties. This study describes the preparation strategies of lignin-based gels according to previously reported methods, with significant attention on the diverse performance of lignin-derived gel materials. Additionally, a detailed review of lignin-based gels utilized as an important resource in diverse fields is provided. Finally, a future vision on challenges and their possible solutions is presented.

Keywords: energy storage, lignin, sustainable materials, gels, smart sensing

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Received: 21 March 2023
Accepted: 05 April 2023
Published: 25 April 2023
Issue date: April 2023

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© 2023 Paper and Biomaterials Editorial Board

Acknowledgements

This work was financially supported by grants from the National Natural Science Foundation of China (22108023), NSFC-CONICFT Joint Project (No. 51961125207), Innovation Support Program for High-level Talents of Dalian (Top and Leading Talents) (201913), Liaoning Province "Xingliao Talent Plan" Outstanding Talent Project (XLYC1901004), Scientific Research Startup Funds for High-level Talents of Dalian Polytechnic University (6102072112), Natural Science Foundation of Liaoning Province (2021-BS-227), and the State Key Laboratory of Pulp and Paper Engineering (South China University of Technology, No. 202202).

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