Journal
CELLULOSE
Volume 28, Issue 6, Pages 3723-3732Publisher
SPRINGER
DOI: 10.1007/s10570-021-03776-z
Keywords
Superabsorbent; Hydrogels; Cellulose; Carboxymethyl cellulose; Quaternized tunicate cellulose nanocrystals
Funding
- Zhejiang Medical Science and Technology Project [2019KY569]
- Natural Foundation of Ningbo [2017A610215]
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Superabsorbent hydrogels were prepared from biodegradable materials, with excellent water absorption capacity, and adjustable properties. They are expected to replace traditional polyolefin-based materials, reducing environmental pollution.
Superabsorbent hydrogels were prepared from biodegradable material, where the matrix was cross-linked cellulose and carboxymethyl cellulose and reinforced by quaternized tunicate cellulose nanocrystals (Q-TCNCs). Due to the large amount of hydrophilic groups on cellulose, carboxymethyl cellulose, and Q-TCNCs, the hydrogels had excellent water absorption capacity. The equilibrium swelling ratio of superabsorbent hydrogels exceeded 500 g/g in deionized water and exceeded 120 g/g even in synthetic urine, which was higher than those of commercial absorbent materials composed of copolymers of acrylic acid and acrylamide. The water absorption performances and mechanical properties of the hydrogels could be adjusted by changing the content of Q-TCNCs. The resultant materials were expected to replace those polyolefin-based materials, thereby reducing environmental pollution.
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