Polymer	Band (cm⁻¹)	Time of irradiation		Type of Vibration	Intensity
Polymer	Band (cm⁻¹)	0.0 hr	2.0 hrs	Type of Vibration	Intensity
PMS	3446	3446	3430	C-H stretch in benzene	Decreased
PMS	3014	------	3014		Increased
PMS	2923	2924	2920	(C-H), stretching vibration of benzene	Increased
PMS	2854	2854	2853	C-H stretch in aldehydes	Increased
PMS	1889	1889	1889	C=O stretch	Increased
PMS	1602	1602	1602	C=C stretch	Decreased
PMS	1443	1443	1446	C=O stretch vibrations, Carboxylic acids-dimeric forms	Increased
PMS	811	811	811	Conjugated double bond	Increased
PMS	547	547	549	Mono substitution of benzene ring	Decreased
PMS/DMT^a	3729	3729	------	C-O-C stretching vibration	Disappears
PMS/DMT^a	3446	3446	3423		Increased
PMS/DMT^a	2924	2924	2922	(C-H), stretching vibration of benzene	Increased
PMS/DMT^a	2852	2852	2852	C-H stretch in aldehydes	Increased
PMS/DMT^a	1714	-------	1714	C=O stretch, carboxylic acid	New Band
PMS/DMT^a	1645	1645	1337	C=C stretch	Decreased
PMS/DMT^a	1455	1455	1453	C=O stretch vibrations, Carboxylic acids-dimeric forms	Decreased
PMS/DMT^a	1114	1114	1111		Increased
PMS/DMT^a	830	830	830	Conjugated double bond	Increased
PMS/DMT^a	671	671	-----	=C-H bending	Disappear