Computational Approach to the Surface-Crosslinking Process of Superabsorbent Polymer via Central Composite Designopen access
- Authors
- Kim, Hae-Chan; Kwon, Yong-Rok; Kim, Jung-Soo; Kwon, Miyeon; Kim, Jong-Ho; Kim, Dong-Hyun
- Issue Date
- Sep-2022
- Publisher
- MDPI Open Access Publishing
- Keywords
- superabsorbent polymer composites; surface-crosslinking; central composite design; response surface methodology; absorption property
- Citation
- Polymers, v.14, no.18, pp 1 - 11
- Pages
- 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- Polymers
- Volume
- 14
- Number
- 18
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/112707
- DOI
- 10.3390/polym14183842
- ISSN
- 2073-4360
- Abstract
- The improvement of gel strength and absorption properties through the surface-crosslinking of superabsorbent polymers (SAPs) is essential for sanitary industry applications. We prepared core-SAP via aqueous solution copolymerization, and then surface-crosslinked the core-SAP under various conditions. The structure of the SAP was characterized using Fourier transform infrared (FT-IR) spectroscopy. Central composite design (CCD) of response surface methodology (RSM) has been applied to determine the optimum surface-crosslinking conditions such as surface-crosslinker content, reaction temperature, and reaction time. The optimal surface-crosslinking conditions were identified at a surface-crosslinker content of 2.22 mol%, reaction temperature of 160 degrees C, and reaction time of 8.7 min. The surface-crosslinked SAP showed excellent absorbency under load of 50 g/g with a permeability of 50 s. Other absorption properties were also evaluated by measuring the free absorbency and centrifuge retention capacity in saline solution.
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