Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151847
Title: Kaolin-enhanced superabsorbent composites : synthesis, characterization and swelling behaviors
Authors: Chen, Mengna
Chen, Xuelong
Zhang, Caiyan
Cui, Baozheng
Li, Zewen
Zhao, Dongyu
Wang, Zhe
Keywords: Engineering::Materials
Issue Date: 2021
Source: Chen, M., Chen, X., Zhang, C., Cui, B., Li, Z., Zhao, D. & Wang, Z. (2021). Kaolin-enhanced superabsorbent composites : synthesis, characterization and swelling behaviors. Polymers, 13(8), 1204-. https://dx.doi.org/10.3390/polym13081204
Journal: Polymers
Abstract: One type of low-cost and eco-friendly organic‒inorganic superabsorbent composite (SAPC) was synthesized by free radical polymerization of acrylic acid (AA), starch (ST), sodium alginate (SA) and kaolin (KL) in aqueous solution. The structure and morphology of the SAPC were characterized by Fourier transform infrared spectrometer (FT-IR), scanning electron microscope (SEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The influence of different reaction conditions on water absorption of SAPC, i.e., SA and KL contents, AA neutralization degree (ND), potassium persulfate (KPS) and N, N′-methylenebisacrylamide (MBA) loading were systematically studied. Under the optimal synthesis conditions, very high water absorption of 1200 g/g was achieved. The swelling kinetic mechanism of SAPC was studied by pseudo-second order swelling kinetics model and Ritger‒Peppas model. The performances of SAPC under different environments were tested and results revealed that this new SAPC had excellent swelling capacity, high water retention, good salt tolerance in monovalent salt solution (NaCl solution) and good pH tolerance between 4 and 10.
URI: https://hdl.handle.net/10356/151847
ISSN: 2073-4360
DOI: 10.3390/polym13081204
Rights: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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