TITLE

Fabrication of calcium phosphate—calcium sulfate injectable bone substitute using hydroxy-propyl-methyl-cellulose and citric acid

AUTHOR(S)
Van Viet Thai; Byong-Taek Lee
PUB. DATE
June 2010
SOURCE
Journal of Materials Science: Materials in Medicine;Jun2010, Vol. 21 Issue 6, p1867
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this study, an injectable bone substitute (IBS) consisting of citric acid, chitosan, and hydroxyl propyl methyl cellulose (HPMC) as the liquid phase and tetra calcium phosphate (TTCP), dicalcium phosphate dihydrate (DCPD) and calcium sulfate dehydrate (CSD, CaSO4·2H2O) powders as the solid phase, were fabricated. Two groups were classified based on the percent of citric acid in the liquid phase (20, 40 wt%). In each groups, the HPMC percentage was 0, 2, and 4 wt%. An increase in compressive strength due to changes in morphology was confirmed by scanning electron microscopy images. A good conversion rate of HAp at 20% citric acid was observed in the XRD profiles. In addition, HPMC was not obviously affected by apatite formation. However, both HPMC and citric acid increased the compressive strength of IBS. The maximum compressive strength for IBS was with 40% citric acid and 4% HPMC after 14 days of incubation in 100% humidity at 37°C.
ACCESSION #
51242292

 

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