Hosokawa Powder Technology Foundation ANNUAL REPORT
Online ISSN : 2189-4663
ISSN-L : 2189-4663
Research Grant Report
Control of Porous Structure in Membrane Manufactured by Drying of Slurry
Shuji HIRONAKA
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RESEARCH REPORT / TECHNICAL REPORT OPEN ACCESS

2021 Volume 29 Pages 62-67

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Abstract

This study was conducted to reveal the relationship between properties of porous membrane and process conditions, when membrane is manufactured via wetting process. Membrane in this study was manufactured using two kind of carbon black (XC-72r and Li-100) which have different specific surface area. Time of ultrasonic dispersion to disperse carbon black and heating temperature to evaporate medium were process conditions to be changed. The thickness, permeability and surface roughness were measured for obtained membrane. As a result, permeability increased to the thickness in the case used Li-100. On the contrast, it was almost constant to the thickness for the case of XC-72r. Although the surface roughness did not depend on the thickness obviously, it became larger for the membrane used the slurry of bi-modal particle distribution for carbon black than used the slurry mono-modal. Consequently, it was revealed that the tendency of permeability and surface roughness to the membrane was understood by the morphology and particle distribution in slurry of carbon black.

Graphical Abstract Fullsize Image
Dependence of permeability on membrane thickness.
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