Highly swellable hydrogels prepared from extensively oxidized lignin

Ji Hyeon Hwang; Daniella V. Martinez; Estevan J. Martinez; Gift Metavarayuth; Dustin Goodlett; Qi Wang; Mitra Ganewatta; Michael S. Kent; Chuanbing Tang

doi:10.1016/j.giant.2022.100106

Highly swellable hydrogels prepared from extensively oxidized lignin

Ji Hyeon Hwang
, Daniella V. Martinez
, Estevan J. Martinez
, Gift Metavarayuth
, Dustin Goodlett
, Qi Wang
, Mitra Ganewatta
, Michael S. Kent
, Chuanbing Tang

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Biopolymers such as lignin are gaining renewed appeal due to the need for sustainable materials. Herein, we used chelator-mediated Fenton (CMF) chemistry to oxidize Kraft lignin to develop sustainable super absorbent materials. The CMF chemistry adds oxygen, opens aromatic rings and increases COOH content, producing hydrophilic lignin without depolymerization. UV absorption, molecular weight, elemental analysis, and titration were used to study the chemical compositions of CMF-processed lignin. Then the chemically modified hydrophilic lignin was used to produce lignin-based hydrogels utilizing an aqueous polymerization and cross-linking reaction that enabled tunable properties. The resulting lignin hydrogels absorbed water up to 96% and swelled up to 2400%, as well as being re-swellable in water. These lignin-based hydrogels may be applicable in water-absorbing products in consumer goods and agriculture.

Original language	English
Article number	100106
Journal	Giant
Volume	10
DOIs	https://doi.org/10.1016/j.giant.2022.100106
State	Published - Jun 2022
Externally published	Yes

Funding

This work is supported by U.S. Department of Energy Bioenergy Technologies Office under Award Number DE-EE0008912 and partially by U.S. National Science Foundation (DMR-1806792 to C.T.). Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.

Keywords

Lignin
Polyacid
Super absorbent material

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10.1016/j.giant.2022.100106

Cite this

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title = "Highly swellable hydrogels prepared from extensively oxidized lignin",

abstract = "Biopolymers such as lignin are gaining renewed appeal due to the need for sustainable materials. Herein, we used chelator-mediated Fenton (CMF) chemistry to oxidize Kraft lignin to develop sustainable super absorbent materials. The CMF chemistry adds oxygen, opens aromatic rings and increases COOH content, producing hydrophilic lignin without depolymerization. UV absorption, molecular weight, elemental analysis, and titration were used to study the chemical compositions of CMF-processed lignin. Then the chemically modified hydrophilic lignin was used to produce lignin-based hydrogels utilizing an aqueous polymerization and cross-linking reaction that enabled tunable properties. The resulting lignin hydrogels absorbed water up to 96\% and swelled up to 2400\%, as well as being re-swellable in water. These lignin-based hydrogels may be applicable in water-absorbing products in consumer goods and agriculture.",

keywords = "Lignin, Polyacid, Super absorbent material",

author = "Hwang, \{Ji Hyeon\} and Martinez, \{Daniella V.\} and Martinez, \{Estevan J.\} and Gift Metavarayuth and Dustin Goodlett and Qi Wang and Mitra Ganewatta and Kent, \{Michael S.\} and Chuanbing Tang",

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year = "2022",

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doi = "10.1016/j.giant.2022.100106",

language = "English",

volume = "10",

journal = "Giant",

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TY - JOUR

T1 - Highly swellable hydrogels prepared from extensively oxidized lignin

AU - Hwang, Ji Hyeon

AU - Martinez, Daniella V.

AU - Martinez, Estevan J.

AU - Metavarayuth, Gift

AU - Goodlett, Dustin

AU - Wang, Qi

AU - Ganewatta, Mitra

AU - Kent, Michael S.

AU - Tang, Chuanbing

PY - 2022/6

Y1 - 2022/6

N2 - Biopolymers such as lignin are gaining renewed appeal due to the need for sustainable materials. Herein, we used chelator-mediated Fenton (CMF) chemistry to oxidize Kraft lignin to develop sustainable super absorbent materials. The CMF chemistry adds oxygen, opens aromatic rings and increases COOH content, producing hydrophilic lignin without depolymerization. UV absorption, molecular weight, elemental analysis, and titration were used to study the chemical compositions of CMF-processed lignin. Then the chemically modified hydrophilic lignin was used to produce lignin-based hydrogels utilizing an aqueous polymerization and cross-linking reaction that enabled tunable properties. The resulting lignin hydrogels absorbed water up to 96% and swelled up to 2400%, as well as being re-swellable in water. These lignin-based hydrogels may be applicable in water-absorbing products in consumer goods and agriculture.

AB - Biopolymers such as lignin are gaining renewed appeal due to the need for sustainable materials. Herein, we used chelator-mediated Fenton (CMF) chemistry to oxidize Kraft lignin to develop sustainable super absorbent materials. The CMF chemistry adds oxygen, opens aromatic rings and increases COOH content, producing hydrophilic lignin without depolymerization. UV absorption, molecular weight, elemental analysis, and titration were used to study the chemical compositions of CMF-processed lignin. Then the chemically modified hydrophilic lignin was used to produce lignin-based hydrogels utilizing an aqueous polymerization and cross-linking reaction that enabled tunable properties. The resulting lignin hydrogels absorbed water up to 96% and swelled up to 2400%, as well as being re-swellable in water. These lignin-based hydrogels may be applicable in water-absorbing products in consumer goods and agriculture.

KW - Lignin

KW - Polyacid

KW - Super absorbent material

UR - https://www.scopus.com/pages/publications/85132377893

U2 - 10.1016/j.giant.2022.100106

DO - 10.1016/j.giant.2022.100106

M3 - Article

AN - SCOPUS:85132377893

SN - 2666-5425

VL - 10

JO - Giant

JF - Giant

M1 - 100106

ER -

Highly swellable hydrogels prepared from extensively oxidized lignin

Abstract

Funding

Keywords

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