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Updated: Sep 7, 2026
Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
Published on: April 7, 2017
Semi-interpenetrating chitosan-styrene sulfonate-acrylamide hydrogel as a rapid and recyclable adsorbent for
Hamud A Altaleb1, Abdikarim M Nasser1, Badr M Thamer1
1Chemistry Department, College of Science, Islamic University of Madinah, Madinah, 42351, Saudi Arabia.
Abstract:
In this study, a novel, eco-friendly superadsorbent semi-interpenetrating hydrogel (CSAm) was successfully synthesized in aqueous solution via free-radical polymerization from chitosan, sodium styrene sulfonate, and acrylamide. The chemical structure and morphological characterizations of the semi-interpenetrating hydrogel were investigated by various techniques. The adsorption performance of the semi-interpenetrating hydrogel was tested under various conditions. The optimization process demonstrated that the ratio of chitosan, styrene sulfonate, and acrylamide is 1: 1:1, resulting in a maximum adsorption capacity of 561.76 mg/g at neutral pH and 40 °C according to the Langmuir-Freundlich isotherm. The semi-interpenetrating hydrogel showed remarkably rapid adsorption behavior, removing 97.14%, 96.68%, and 95.77% of methylene blue dye from initial concentrations of 50, 100, and 200 mg/L, respectively, within the first 5 min, following pseudo-first-order kinetics. The prepared hydrogel exhibited high selectivity for the cationic dye and maintained its adsorption capacity over eight regeneration cycles, without significant loss of performance.
