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      Preparation and Enzyme Degradability of Spherical and Water-Absorbent Gels from Sodium Carboxymethyl Cellulose

      , ,
      Gels
      MDPI AG

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          Abstract

          To synthesize a biodegradable alternative to spherical polyacrylic acid absorbent resin, spherical hydrogel particles were prepared from carboxymethyl cellulose (CMC) dissolved in an aqueous solution, using ethylene glycol diglycidyl ether (EGDE) as a crosslinking agent. The effect of varying the initial CMC concentration and feed amount of EGDE on the shape, water absorbency, water-holding capacity, and enzyme degradability of the resultant CMC hydrogels was determined. The reaction solution was poured into fluid paraffin, and spherical hydrogel particles were obtained via the shear force from stirring. The shape and diameter of the spherical hydrogel particles in the swollen state depended on the CMC concentration. The spherical hydrogel particles obtained by increasing the amount of EGDE resulted in a decrease in absorbency. Additionally, all the spherical hydrogel particles were degraded by cellulase. Thus, spherical biodegradable hydrogel particles were prepared from CMC, and the particle size and water absorption of the hydrogel could be controlled in the range of 5–18 mm and 30–90 g·g−1 in the swollen state, respectively. As an alternative to conventional superabsorbent polymers, the spherical CMC hydrogels are likely to be useful in industrial and agricultural applications.

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          Most cited references33

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          Novel hydrophilic chitosan-polyethylene oxide nanoparticles as protein carriers

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            Superabsorbent hydrogels based on cellulose for smart swelling and controllable delivery

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              Preparation and swelling properties of graphene oxide/poly(acrylic acid-co-acrylamide) super-absorbent hydrogel nanocomposites

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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                GELSAZ
                Gels
                Gels
                MDPI AG
                2310-2861
                May 2022
                May 20 2022
                : 8
                : 5
                : 321
                Article
                10.3390/gels8050321
                35621619
                cae56c57-a7cf-4ed0-8972-41a712b629c7
                © 2022

                https://creativecommons.org/licenses/by/4.0/

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