Characterization of Modified and Polymer Coated Alumina Surfaces by Infrared Spectroscopy

Table 5

DRIFT bands that are characterizing coated and bonded alumina samples.

Bands cm^−1	Assignment	Absorbance
		AlCCo10%	AlCBo10%
3467	Hydroxyl groups adsorbed on the surface	0.17	0.3
2942	CH2 symmetrical stretching vibrations	0.12	0.25
2877		0.13	0.24
1729	Polyethylene glycol (PEG)	0.1	0.2
1616	Bending of the H–O–H bonds	0.09	0.18
1460	In-plane scissoring of CH2 group	0.02	0.14
1391	In-plane O–H deformation of PEG	0.02	0.12
1119	C–O–C asymmetric	0.05	0.14
1070	Cluster of Al^3+ and O^2− ions on the surface of alumina	0.03	0.12
853	C–C skeletal stretching vibrations	0.09	0.13