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Use of Glycerol as a Cryoprotectant in Vacuum‐Assisted Foaming of Ceramic Suspension Technique for Improving Compressive Strength of Porous Biphasic Calcium Phosphate Ceramics
Author(s) -
Ahn MinKyung,
Moon YoungWook,
Koh YoungHag,
Kim HyounEe
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05443.x
Subject(s) - compressive strength , cryoprotectant , glycerol , suspension (topology) , materials science , porosity , ceramic , composite material , calcium , phosphate , chemical engineering , chemistry , metallurgy , organic chemistry , cryopreservation , embryo , mathematics , homotopy , pure mathematics , engineering , biology , microbiology and biotechnology
This article reports the utility of glycerol as a cryoprotectant for improving the compressive strength of highly porous biphasic calcium phosphate ( BCP ) ceramics, comprised of hydroxyapatite and β‐tricalcium phosphate, produced using vacuum‐assisted foaming of a ceramic suspension technique. All the samples produced with various glycerol contents (0, 9, 17, and 23 wt% in relation to the water content) showed a highly porous structure with a uniform pore distribution. However, the addition of glycerol effectively suppressed the formation of microchannels in the BCP walls, accordingly leading to a considerable increase in compressive strength from 0.72 ± 0.11 to 2.36 ± 0.41 MPa with increasing glycerol content from 0 to 23 wt%.