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Ionic-bonded superabsorbent polymers and their surface-crosslinking using modified silica
- Authors
- Kwon, Yong Rok; Hong, Seok Ju; Lim, Seung Ho; Kim, Jung Soo; Chang, Young Wook; Choi, Jun; Kim, Dong Hyun
- Issue Date
- May-2021
- Publisher
- TAYLOR & FRANCIS INC
- Keywords
- Superabsorbent polymer; surface-crosslinking; silica; ionic bond; itaconic acid
- Citation
- POLYMER-PLASTICS TECHNOLOGY AND MATERIALS, v.60, no.7, pp.724 - 733
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
- Volume
- 60
- Number
- 7
- Start Page
- 724
- End Page
- 733
- ISSN
- 2574-0881
- Abstract
- The purpose of this study is to improve the low absorbency under load and the permeability of a superabsorbent polymer (SAP)-based on itaconic acid by introducing a polycationic salt into the core-SAP to form ionic bonds as well as by adding modified silica to the surface-crosslinked SAP. The core-SAP was synthesized by aqueous polymerization using itaconic acid, vinyl sulfonic acid, and tetra (ethylene glycol) diacrylate. The absorbency under loading of the core-SAP was improved using aluminum sulfate and zirconium sulfate as polycationic salts. The surface-crosslinked core-SAP with the modified silica showed increased permeability.
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