Highly porous biphasic calcium phosphate (BCP) ceramics with large interconnected pores by freezing vigorously foamed BCP suspensions under reduced pressure

Min Kyung Ahn, Kwan Ha Shin, Young Wook Moon, Young-Hag Koh, Won Young Choi, Hyoun Ee Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This article proposes a new way of producing highly porous biphasic calcium phosphate (BCP) ceramics with large interconnected pores by freezing a vigorously foamed BCP suspension under reduced pressure, which allows the air bubbles incorporated into the BCP suspension to expand extensively. All the fabricated samples produced with various degrees of expansion of the BCP suspension (0, 150, 200, and 250 vol%) showed a highly uniform porous structure with their unique microporous BCP walls. The sizes of the pores and interconnections between the pores increased remarkably from 74 ± 21 μm to 295 ± 93 μm and 22 ± 8 μm to 123 ± 60 μm, respectively, with increasing degree of expansion from 0 to 250 vol%. However, the compressive strength decreased from 1.2 ± 0.29 MPa to 0.4 ± 0.07 MPa with increasing degree of expansion from 150 to 250 vol%.

Original languageEnglish
Pages (from-to)4154-4156
Number of pages3
JournalJournal of the American Ceramic Society
Volume94
Issue number12
DOIs
Publication statusPublished - 2011 Dec 1

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Calcium phosphate
Freezing
ceramics
freezing
Suspensions
calcium
phosphate
air bubble
compressive strength
Compressive strength
hydroxyapatite-beta tricalcium phosphate
Air

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Highly porous biphasic calcium phosphate (BCP) ceramics with large interconnected pores by freezing vigorously foamed BCP suspensions under reduced pressure. / Ahn, Min Kyung; Shin, Kwan Ha; Moon, Young Wook; Koh, Young-Hag; Choi, Won Young; Kim, Hyoun Ee.

In: Journal of the American Ceramic Society, Vol. 94, No. 12, 01.12.2011, p. 4154-4156.

Research output: Contribution to journalArticle

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