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Title: Lignin as a bioactive polymer and heavy metal absorber- an overview

Abstract

As a pulping and bio-refinery by-product with phenolic chemical structure, lignin indicated high potential as natural antioxidant activity, UV blocker, antibacterial and toxic material absorbent properties. Presence of phenolic hydroxyl groups in lignin structure plays the main role of its antioxidant activity. However, lignin antioxidant power can change depending on its other structural features and functional groups like ortho-methoxy groups, –OCH3 groups, the α-CH2 groups, the aliphatic carbonyl groups, and the size of π-conjugated systems. Lignin in mixture with synthetic polymers, improved their thermal stability. Lignin has high UV light absorbing potential in broad-spectrum (UVA, UVB). Adding 1–5% of lignin into hand cream indicated excellent range of sun protection factor (SPF) with more than 95% UV light absorption. Lignin also indicated strong UV light protection when applied in different transparent film and protect paint, oil, and varnish from UV degradation. Further, lignosulfonate and other modified lignin including chemically modification, nano-particles and lignin hydrogel indicated high potential as heavy metal absorber.

Authors:
ORCiD logo [1]; ORCiD logo [2]
  1. Hollingsworth & Vose, Groton, MA (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1896978
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Chemosphere
Additional Journal Information:
Journal Volume: 309; Journal Issue: 1; Journal ID: ISSN 0045-6535
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Lignin; Antioxidant; UV absorber; Heavy metal; Natural polymer; Bio-refinery

Citation Formats

Sadeghifar, Hasan, and Ragauskas, Arthur. Lignin as a bioactive polymer and heavy metal absorber- an overview. United States: N. p., 2022. Web. doi:10.1016/j.chemosphere.2022.136564.
Sadeghifar, Hasan, & Ragauskas, Arthur. Lignin as a bioactive polymer and heavy metal absorber- an overview. United States. https://doi.org/10.1016/j.chemosphere.2022.136564
Sadeghifar, Hasan, and Ragauskas, Arthur. Thu . "Lignin as a bioactive polymer and heavy metal absorber- an overview". United States. https://doi.org/10.1016/j.chemosphere.2022.136564. https://www.osti.gov/servlets/purl/1896978.
@article{osti_1896978,
title = {Lignin as a bioactive polymer and heavy metal absorber- an overview},
author = {Sadeghifar, Hasan and Ragauskas, Arthur},
abstractNote = {As a pulping and bio-refinery by-product with phenolic chemical structure, lignin indicated high potential as natural antioxidant activity, UV blocker, antibacterial and toxic material absorbent properties. Presence of phenolic hydroxyl groups in lignin structure plays the main role of its antioxidant activity. However, lignin antioxidant power can change depending on its other structural features and functional groups like ortho-methoxy groups, –OCH3 groups, the α-CH2 groups, the aliphatic carbonyl groups, and the size of π-conjugated systems. Lignin in mixture with synthetic polymers, improved their thermal stability. Lignin has high UV light absorbing potential in broad-spectrum (UVA, UVB). Adding 1–5% of lignin into hand cream indicated excellent range of sun protection factor (SPF) with more than 95% UV light absorption. Lignin also indicated strong UV light protection when applied in different transparent film and protect paint, oil, and varnish from UV degradation. Further, lignosulfonate and other modified lignin including chemically modification, nano-particles and lignin hydrogel indicated high potential as heavy metal absorber.},
doi = {10.1016/j.chemosphere.2022.136564},
journal = {Chemosphere},
number = 1,
volume = 309,
place = {United States},
year = {Thu Sep 22 00:00:00 EDT 2022},
month = {Thu Sep 22 00:00:00 EDT 2022}
}

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