Journal
CARBOHYDRATE POLYMERS
Volume 299, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2022.120140
Keywords
Cellulose and nanocellulose; Superabsorbent; Hydrogel; Xerogel; Aerogel; Application
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This review highlights the synthetic strategy, structure-absorption relationships, and various applications, challenges, and research directions of cellulose and nanocellulose superabsorbent hydrogels.
Superabsorbent hydrogels (SAH) are crosslinked three-dimensional networks distinguished by their super ca-pacity to stabilize a large quantity of water without dissolving. Such behavior enables them to engage in various applications. Cellulose and its derived nanocellulose can become SAHs as an appealing, versatile, and sustainable platform because of abundance, biodegradability, and renewability compared to petroleum-based materials. In this review, a synthetic strategy that reflects starting cellulosic resources to their associated synthons, cross-linking types, and synthetic controlling factors was highlighted. Representative examples of cellulose and nanocellulose SAH and an in-depth discussion of structure-absorption relationships were listed. Finally, various applications of cellulose and nanocellulose SAH, challenges and existing problems, and proposed future research pathways were listed.
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