Synthesis and Characterization of Superabsorbent Hydrogel from Activated Hydrochar-Sucrose Crosslinked with Maleic Acid
Loading...
Date
2026-01
Journal Title
Journal ISSN
Volume Title
Publisher
Scientific Research Publishing Inc.
Abstract
Superabsorbent hydrogels are hydrophilic materials forming three-dimensional polymer networks capable of absorbing large amounts of water. They
are utilized in various fields, though most current types are non-biodegradable
and costly to produce. This research explored a more sustainable approach by
synthesizing superabsorbent hydrogels from activated hydrochar derived
from sugarcane bagasse, using acidified potassium manganate for activation
and sucrose for polymerization. Maleic acid was employed to create crosslinked
structures, optimizing swelling capacity through varying conditions. Characterization through FT-IR confirmed successful crosslinkage. XRD analysis showed
the amorphous nature of hydrochar and AH as compared to the increased
crystallinity exhibited by AHSU polymer units and SAH superabsorbent hydrogel. SEM analysis revealed that the superabsorbent hydrogel had compact
permeable surface network structures. The optimal synthesis ratio was found
to yield a swelling capacity of 778% within 12 hours, highlighting the potential
of these biocompatible hydrogels for agricultural applications in semi-arid and
arid regions.
Description
Research Article
Keywords
Citation
ukulu, S.M., Mbuvi, H.M., Kasimu, T.M. and Maingi, F. (2026) Synthesis and Characterization of Superabsorbent Hydrogel from Activated Hydrochar-Sucrose Crosslinked with Maleic Acid. Open Journal of Applied Sciences, 16, 423-436. https://doi.org/10.4236/ojapps.2026.162026