On Biomimetics by Lilyana Pramatarova

On Biomimetics
146

0 1020304050607080

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

time,h

Mg

2+, mmol/l

SBFc

SBFr

SBFg

c.

0 153045607590720800

1.40

1.45

1.50

1.55

1.60

1.65

molar ratio Ca/PO4

time, h

d.

0 153045607590720800

0.01

0.02

0.03

0.04

0.05

time, h

molar ratio Mg/Ca

e.

Fig. 3. Kinetic profiles of PO 4 3- (a), Ca2+ (b) and Mg2+ (c) in liquid and solid (d, e) phases.

A similar behavior of PO 4 3- (Fig. 3a), Ca2+ (Fig. 3b), and Mg2+ (Fig. 3c) ions was found in the
three SBFs. The biggest changes were registered during the first 6 hours. The liquid phases
were enriched in Ca2+, Mg2+, and PO 4 3- ions during the first 2 - 4 h; afterwards, until the 6th
hour, the enrichment rate gradually decreased. The highest increase was registered for Ca2+
(32%) and Mg2+ (46%) ions in SBFg. Their highest decrease was observed in SBFr. For Ca2+