Physicochemical Analysis of the Polydimethylsiloxane Interlayer Influence on a Hydroxyapatite Doped with Silver Coating

Table 1

FT-IR bands associated with the functional groups present in the structure of Ag:HAp-PDMS composite layer.

Wavenumber (cm^−1)	IR bands assignment
	PDMS layer	Ag:HAP-PDMS layer
490	—	[20–23], Figure 4
498, 512, 543, 550	—	[24, 25], Figure 5(a)
562, 590, 602, 611	—	P-O bending vibrations in tetrahedron in crystalline HAP [20–23, 26–35], Figure 5(a)
620	asymmetrical stretching vibration [36], Figure 3	—
695	—	Crystallinity of SiO2 type materials [37], Figure 4
780	—	Si-O-P vibration [38], Figure 5(c)
784	Si-C stretching vibration [36], Figure 3	—
814, 816, 817.5	—	Si-O-Si bonds [27, 28], Figure 5(c)
828	—	Si-O-Ag [39, 40], Figure 5(d)
860	Si-CH3 rocking vibration [36], Figure 3	—
862	—	Si-O, Si-C vibrations [28], Figure 5(e)
870	—	vibrations [20, 30, 41], Figure 5(e)
877	—	ions [32, 34, 42, 43], Figure 5(e)
889	Si-O bending vibration [37, 44], Figure 3	—
925, 945, 975	—	P-O vibrations in group [20–23, 26–30, 45], Figure 5(b)
1004, 1071	Si-O-Si vibrations [36], Figure 3	—
1000, 1044, 1067, 1085	—	[20–23, 26–35], Figure 5(b)
1140	—	Si-O vibrations [9, 37, 44], Figure 4
1152	Si-O vibrations [9, 37, 44], Figure 3	—
1254, 1400	CH3 vibrations in Si=CH3 group [36], Figure 3	CH3 vibrations in Si=CH3 group [36],; Figure 4
1650	H2O, OH, Si-OH [46], Figure 3	H2O, OH, Si-OH [46], Figure 4
2912, 2964	C-H vibrations [36], Figure 3	—