| 초록 |
In this paper, we suggest a new and novel method to improve super absorbent polymer based on poly(acrylic acid) by applying open porous structure which is based on solely Al2O3 nanoparticle stabilized Pickering HIPE(High Internal Phase Emulsion) template. Our goal includes resolving ‘gel-blocking’ phenomenon, which is a problem that swollen gel bed of a conventional particle-type SAP hinder the additional fluid absorption, by not using formation of core-shelled particle. In order to improve the interconnectivity between the pores, the internal volume fraction was increased before the polymerization. With 86 vol% of internal volume fraction, pore throat, which is the connection path between the pores was observed on the SEM rather than lower internal volume fration, and also it has 2.95 D of permeability for 0.154 M NaCl solution. Based on the increased permeability, swelling rate was also improved. |
