Wet foam stability and tailoring microstructure of porous ceramics using polymer beads

Title
Wet foam stability and tailoring microstructure of porous ceramics using polymer beads
Author(s)
김석영Bhaskar[Bhaskar]박정규[박정규]G.H. Cho[G.H. Cho]김익진[김익진]
Keywords
SOLID PARTICLES; EMULSIONS; SILICA
Issue Date
201508
Publisher
MANEY PUBLISHING
Citation
ADVANCES IN APPLIED CERAMICS, v.114, no.6, pp.333 - 337
Abstract
The microstructures of the porous ceramics are improved considerably using polymethyl methacrylate (PMMA) as a pore template since particles tend to adsorb irreversibly at the air-water interface. This paper presents a versatile approach for the production of porous SiO2 ceramics by a process of direct foaming with the addition of PMMA beads. The adsorption free energy of the colloidal suspension was found to be 2.0 x 10(9) kT. A wet foam stability of >80% was achieved using the surfactant hexylamine (0.05 M), which resulted in a colloidal suspension with the highest surface tension (116.2 mN m(-1)).
URI
http://hdl.handle.net/YU.REPOSITORY/31287http://dx.doi.org/10.1179/1743676115Y.0000000004
ISSN
1743-6753
Appears in Collections:
공과대학 > 신소재공학부 > Articles
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