Issue 7, 2024

Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Abstract

Rapid water absorption is very important for the application of superabsorbent polymers under dry or semi-dry conditions, but there are currently few relevant studies. In this context, a novel porous superabsorbent of chitosan-grafted acrylic copolymer-2-acrylamido-2-methylpropanesulfonic acid/sapindus mukorossi pericarp/calcined oil shale semi-coke (CS-g-P(AA-co-AMPS)/SMP/COSSC) was prepared by a green and convenient foam template method, which was triggered by redox polymerization. The rich pore structure of the porous superabsorbent was conducive to accelerating the water absorption rate. It only took 15 min to reach a swelling capacity of 650 g gāˆ’1 in distilled water. Soil experiments show that even with the addition of 0.5 wt% porous superabsorbent, the soil water retention time can be extended to 7 days. Finally, it was applied to the growth of cabbage seeds and it was found that the growth was significantly improved. Based on these excellent properties, we expect to provide a valuable reference for the preparation of fast-absorbing materials through the green water-based foam template method, contributing to sustainable agriculture.

Graphical abstract: Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Supplementary files

Article information

Article type
Paper
Submitted
28 Oct 2023
Accepted
04 Jan 2024
First published
05 Jan 2024

Soft Matter, 2024,20, 1438-1446

Porous superabsorbent composites prepared from aqueous foam template and application evaluation

Y. Liu, F. Duan, Y. Zhu, X. Wang, L. Zong and A. Wang, Soft Matter, 2024, 20, 1438 DOI: 10.1039/D3SM01455J

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