Silica Based Superhydrophobic Nanocoatings for Natural Rubber Surfaces

Table 2

FT-IR stretching vibrations of the uncoated rubber and dipped coated and spray coated rubber.

Uncoated rubber	Corresponding vibration	Dipped coated rubber	Corresponding vibration	Spray coated rubber	Corresponding vibration
IR frequency (cm^−1)		IR Frequency (cm^−1)		IR Frequency (cm^−1)
672	C-H deformation	686	C-H deformation	686	C-H deformation
736	C-H out of plane bending	788	Si-O symmetric stretching	788	Si-O symmetric stretching
836	=C-H out of plane bending	864	=C-H out of plane bending	864	=C-H out of plane bending
1038	C-H in plane bending	1010	C-H in plane bending	1009	C-H in plane bending
1091	C-H in plane bending	1072	O-Si-O asymmetric stretching	1072	O-Si-O asymmetric stretching
1261	O-P-O asymmetric	1258	O-P-O asymmetric stretching	1258	O-P-O asymmetric stretching
	stretching	1446	CH2 deformation	1446	CH2 deformation
1375	CH2 deformation	1483	CH2 deformation	1483	CH2 deformation
1445	CH2 deformation	1657	C=C stretching	1657	C=C stretching
1660	C=C stretching	2853	CH2 symmetric stretching	2857	CH2 symmetric stretching
2852	CH2 symmetric stretching	2921	CH2 symmetric stretching	2927	CH2 symmetric stretching
2925	CH2 symmetric stretching	2962	CH3 asymmetric stretching	2962	CH3 asymmetric stretching
2960	CH3 asymmetric stretching	Broad peak in ~3500	O-H stretching	Broad peak in ~3500	O-H stretching
Broad peak in ~3500	O-H stretching