Polymer	Band (cm⁻¹)	Time of Irradiation 0.0 hr 2.0 hrs		Type of Vibration	Intensity
PS	3444	3445	3445	C-H stretch in benzene	Decreased
PS	3059	------	3060	= C-H stretch	New Band
PS	3026	------	3027	= C-H stretch	New Band
PS	2921	2923	2924	(C-H), stretching vibration of benzene	Increased
PS	2842	2842	2851	C-H stretch in aldehydes	Increased
PS	1740	1741	1741	C=O stretch	Increased
PS	1490	-------	1492	C=C stretch	New Band
PS	1024	-------	1024	C-O-C antisymmetric stretching vibration	New Band
PS	755	-------	756	Conjugated double bond	New Band
PS	541	542	542	Mono substitution of benzene ring	Decreased
PS/DMT	3738	3738	------	C-O-C stretching vibration	Disappears
PS/DMT	3446	3446	3431	C-H stretch in benzene	decreased
PS/DMT	3059	3059	3060	(C-H), stretching vibration of benzene	Increased
PS/DMT	3026	3026	3027	C-H stretch	Increased
PS/DMT	2923	2924	2924	C-H stretch in aldehydes	increased
PS/DMT	2850	2851	2853		Increased
PS/DMT	1726	-------	1727	C=O stretch, carboxylic acid	New Band
PS/DMT	1600	-------	1602	C=C stretch	New Band
PS/DMT	1451	1452	1453	C=O stretch vibrations, Carboxylic acids-dimeric forms	Decreased
PS/DMT	1274	1275	1276	C ? O stretch in acids	Increased
PS / DMT	1024	1024	1026	C-O-C antisymmetric stretching vibration	Increased
PS/DMT	830	830	831	Conjugated double bond	Increased
PS / DMT	699	670	670	=C-H bending	Increased
PS / DMT	541	542	542	Mono substitution of benzene ring	Decreased