Particle-stabilized wet foams to porous ceramics by direct foaming

Title
Particle-stabilized wet foams to porous ceramics by direct foaming
Author(s)
김석영조위Subhasree Bhaskar[Subhasree Bhaskar]Jung Gyu Park[Jung Gyu Park]In Sub Han[In Sub Han]Ik Jin Kim[Ik Jin Kim]
Keywords
INTERFACES; SILICA
Issue Date
201412
Publisher
KOREAN ASSOC CRYSTAL GROWTH, INC
Citation
JOURNAL OF CERAMIC PROCESSING RESEARCH, v.15, no.6, pp.503 - 507
Abstract
This study presents a versatile method for the production of silica foams with different particle concentration that have wet foam stability above 80%. The foams were produced by using a direct foaming method with inorganic particles (SiO2) and Hexylamine, a short chain amphiphile, at a specific range of pH through the in-situ hydrophobization mechanism. The wet foams were finally dried at room temperature and then sintered, exhibiting free energy of 2.5 x 10(8) kTs and pressure difference of 0.8 mPa for colloidal SiO2 particles with average diameter of 3.5 mu m. Microstructural examinations of the wet and the sintered foams were performed through the use of optical and scanning electron microscopy where the decrease in pore size was observed to be related to an increase in particle concentration among the interconnected pores.
URI
http://hdl.handle.net/YU.REPOSITORY/30332
ISSN
1229-9162
Appears in Collections:
공과대학 > 신소재공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE