Journal
GREEN CHEMISTRY
Volume 23, Issue 24, Pages 10062-10070Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1gc03906g
Keywords
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Funding
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [ZR201605]
- Guangxi Natural Science Foundation [2017GXNSFAA198220, 2018GXNSFAA294074]
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control and the Guangxi Natural Fund
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The study proposes a strategy to enhance the water stability and wet strength of cellulose nanopaper (CNP) by using activated residual lignin, reducing water absorption and swelling while increasing wet strength. This simple, eco-friendly and cost-efficient strategy has the potential to expand the utilization of cellulose in various applications.
Due to water-sensitive hydrogen bonding, uncontrolled deformation and mechanical decay of cellulose nanopaper (CNP) caused by water remain challenging. Inspired by plant cell walls and bonding strengthening, a strategy is proposed herein to produce CNPs with outstanding water stability and wet strength by using activated residual lignin as a reinforcement. Compared with lignin-free CNPs, the saturated water absorption of residual lignin CNPs is reduced by 74%, the swelling is reduced by 94%, and the wet strength is increased by 1625%. This study demonstrates a strategy with simple, eco-friendly and cost-efficient features, which has the potential to expand the field of cellulose utilization.
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