Nanoporous Sodium Carboxymethyl Cellulose-g-poly (Sodium Acrylate)/FeCl3 Hydrogel Beads: Synthesis and Characterization

Gels

Jaehwan Kim¹  Ruchir Priyadarshi²  Sauraj³  Kirtiraj K. Gaikwad⁴  Anurag Kulshreshtha⁴  Yuvraj Singh Negi⁵  Bijender Kumar⁵  Farha Deeba⁵  Anuj Kumar⁶ 

[1] Creative Research Center for Nanocellulose Future Composites, Department of Mechanical Engineering, Inha University, Inharo, Michuhol-gu, Incheon 22212, Korea;Department of Food and Nutrition, Bio Nanocomposite Research Center, Kyung Hee University, Seoul 02447, Korea;Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India;Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee 247667, India;Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India;School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea;

关键词: sodium carboxymethyl cellulose;    poly(sodium acrylate);    FeCl3;    cross-linking;    nanoporous beads;    hydrogel;   

DOI  :  10.3390/gels6040049

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown