Structural Modifications of Sodium Polyacrylate-Polyacrylamide to Enhance Its Water Absorption Rate

Superabsorbent polymers (SAPs) can absorb a large amount of water and find broad applications in various industries. There are many reports on the synthesis structural modification techniques to improve absorption property SAPs. However, we see few studies comparison integration these techniques. In this study, three structurally modified SAPs were synthesized evaluated for effects surface cross-linking, foaming, two modifications rate capacity conventional SAP. First, sodium polyacrylate-polyacrylamide was prepared as base polymer by aqueous solution polymerization method. Second, with cross-linking enhance absorption, cross-linked SAP obtained. Third, foaming obtain foamed Lastly, further polymer, their performance. Results show that performance could be improved processes. Specifically, had best under load, highest 1954 g/g, fastest an initial swelling Kis = 21.94.