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http://dx.doi.org/10.4191/kcers.2013.50.5.341

Processing of Kaolin-Based Microfiltration Membranes  

Eom, Jung-Hye (Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul)
Kim, Young-Wook (Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul)
Song, In-Hyuck (Engineering Ceramics Group, Korea Institute of Materials Science)
Publication Information
Journal of the Korean Ceramic Society / v.50, no.5, 2013 , pp. 341-347 More about this Journal
Abstract
Kaolin-based membranes with a pore size of 0.30-0.40 ${\mu}m$ were successfully prepared by a simple pressing route using low-cost starting materials, kaolin and sodium borate. The prepared green bodies were sintered at different temperatures ranging between 900 and $1200^{\circ}C$. The sintered membranes were characterized by X-ray diffraction, mercury porosimetry, scanning electron microscopy, and capillary flowmetry. It was observed that the porosity decreased with an increase in both the sintering temperature and the sodium borate content, whereas the flexural strength increased with an increase in both the sintering temperature and the sodium borate content. The air flow rate decreased with an increase in the sodium borate content. The typical porosity, flexural strength, and specific flow rate of the kaolin-based membrane sintered with 5 wt% sodium borate at $1100^{\circ}C$ were 37%, 19 MPa, and $1{\times}10^{-3}L/min/cm^2$, respectively, at a p of 30 psi.
Keywords
Membranes; Clay; Processing; Porosity; Permeability;
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Times Cited By KSCI : 3  (Citation Analysis)
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