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Table 2 Results of FTIR analysis

From: Hydration behavior and formation of strätlingite compound (C2ASH8) in a bio-cement based on tri-calcium silicate and mono-calcium aluminate for dental applications: influence of curing medium

Wave number (cm1)

Crystal phase

850

υ2 CO32− out of plane bending

1400–1500

υ3 CO32− stretching vibrations

600–500

The vibration of C3AH6and may overlap with that of the Al–O6

550–520

850–800

The Al–O vibrations

1100–1000

The absorption band of α-Al(OH)3

970–990

1027

The O–H bending vibration attributed to gibbsite (AH3)

3475, 3530 and 3630

The O–H stretching vibration attributed to gibbsite (AH3)

524, 3465 and 3670

The bands appearing of the water hydrated CAC paste (CAH10, C2AH8 and C3AH6)

1650–1600

The H–O–H bending vibration band of CAH10

1100–1050

The symmetric stretching vibration of υ3 PO43−

650–560

The PO43− bending vibration

445–815–950

CSH phase

491–667

Si–O–Si the main band corresponding to Si–O bond

490

υ2 OH stretching in Ca(OH)2 or HAP

3648

Very broad OH absorption bands

2500–3700

OH band