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Nanoporous sodium carboxymethyl cellulose-g-poly (Sodium acrylate)/fecl3 hydrogel beads: Synthesis and characterization

Kumar, B and Priyadarshi, R and Sauraj, . and Deeba, F and Kulshreshtha, A and Gaikwad, KK and Kim, J and Kumar, A and Negi, YS (2020) Nanoporous sodium carboxymethyl cellulose-g-poly (Sodium acrylate)/fecl3 hydrogel beads: Synthesis and characterization. In: Gels, 6 (4). pp. 1-11.

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Official URL: https://dx.doi.org/10.3390/gels6040049


Novel sodium carboxymethyl cellulose-g-poly (sodium acrylate)/Ferric chloride (CMC-g-PNaA/FeCl3) nanoporous hydrogel beads were prepared based on the ionic cross-linking between CMC-g-PNaA and FeCl3 . The structure of CMC and CMC-g-PNaA were elucidated by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy, and the elemental composition was analyzed by energy dispersive X-ray analysis (EDX). The physicochemical properties of the CMC-g-PNaA/FeCl3 hydrogel beads were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and thermogravimetric analysis (TGA). The swelling percentage of hydrogel beads was studied at different time periods. The obtained CMC-g-PNaA/FeCl3 hydrogel beads exhibited a higher nanoporous morphology than those of CMC-g-PNaA and CMC beads. Furthermore, an AFM image of the CMC-g-PNaA/FeCl3 beads shows granule type topology. Compared to the CMC-g-PNaA (189�C), CMC-g-PNaA/FeCl3 hydrogel beads exhibited improvement in thermal stability (199�C). Furthermore, CMC-g-PNaA/FeCl3 hydrogel beads depicted a higher swelling percentage capacity of around 1452, as compared to CMC-g-PNaA (1096). Moreover, this strategy with preliminary results could be useful for the development of polysaccharide-based hybrid hydrogel beads for various potential applications. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Journal Article
Publication: Gels
Publisher: MDPI AG
Additional Information: Copyright to this article belongs to MDPI AG
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 11 Feb 2021 09:24
Last Modified: 11 Feb 2021 09:24
URI: http://eprints.iisc.ac.in/id/eprint/67527

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