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Preparation of a monolithic and macroporous superabsorbent polymer via a high internal phase Pickering emulsion template
Author(s) -
Shin Heewoong,
Kim Subeen,
Han YoungKyu,
Kim KyuHan,
Choi Siyoung Q.
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48133
Subject(s) - materials science , chemical engineering , emulsion , polymer , pickering emulsion , aqueous solution , absorption (acoustics) , phase (matter) , swelling , superabsorbent polymer , kinetics , absorption of water , particle (ecology) , volume fraction , nanoparticle , interconnectivity , polymer chemistry , chemistry , nanotechnology , composite material , organic chemistry , physics , oceanography , quantum mechanics , engineering , artificial intelligence , computer science , geology
A superabsorbent polymer (SAP) possesses an ability to absorb an aqueous solution up to several hundred times its own weight. To utilize a SAP effectively, a high absorption rate is also essential in addition to a high absorption capability. Herein, using a template based on a high internal phase Pickering emulsion (HIPPE) stabilized by aluminum oxide (Al 2 O 3 ) nanoparticles, we synthesize a SAP with a high absorption rate by forming macropores. In particular, by adjusting three different parameters, the concentration of the crosslinker, the internal volume fraction of the emulsion, and the particle concentration, we successfully formed a HIPPE‐templated SAP with a high absorption rate for a saline solution, which was 51.6 g g −1 of the absorbency within 10 s. We confirm that the swelling kinetics is mainly determined by the interconnectivity between the internal macro‐pores. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48133.