What is it about?

This review aimed to present and discuss lignin structure, variation of lignin chemical properties regarding its source and extraction process, recent advances in chemical modification of lignin to enhance its reactivity, and potential applications of modified lignin for manufacturing value-added biocomposites with enhanced properties and lower environmental impact, such as food handling/packaging, seed coating, automotive devices, 3D printing, rubber industry, and wood adhesives.

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Why is it important?

Lignin is considered a sustainable alternative for the efficient replacement of petroleum-derived products. Due to its unique properties, lignin can be used to develop novel biocomposites with engineered characteristics to match desired applications. Because of the increased public awareness on health, safety, and environmental concerns, as well as the maturity of technology to improve the performance of lignin-based copolymers,partial or even complete replacement of synthetic-based polymers with lignin-based copolymers for these industries may be possible in the future.

Perspectives

Future research should emphasize a thorough examination of lignin structure, as well as the relationship between lignin functional groups and yield from various chemical modification techniques, to improve lignin valorization in value-added applications.

Petar Antov
University of Forestry

Read the Original

This page is a summary of: Recent developments in lignin modification and its application in lignin‐based green composites: A review, Polymer Composites, July 2022, Wiley, DOI: 10.1002/pc.26824.
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