Table 4.

Functional groups and the corresponding wavenumber in the MA and VA monomers, PPMA, PPVA and PP(MA-VA) thin films.

Assignment	MA	Wavenumber (cm−1)					VA	Band intensity
		PP(MA-VA)
		PPMA	3:1	1:1	1:3	PPVA
O $-$ H stretching	3438	3443	3442	3470	3443	3444	3443	Broad peak
C $-$ H3 stretching	2961	–	–	–	–	–	2980	Merged
C $-$ H2 stretching	2938	2926	2928	2928	2922	2918	2938	Sharp
C $-$ H stretching	2862	2860	2860	2860	2860	2860	2860	Merged
C $=$ O stretching	1734	1709	1702	1700	1700	1705	1741	Broad peak
C C stretching	1645	1636	1635	1634	1635	1633	1638	Very low
CH3 bending	1464	1448	1448	1445	1448	1445	1436	Merged
CH2 bending	1385	1380	1380	1380	1379	1379	1375	Low
C $-$ O	1282,						1243,	Sharp peak
	1128	1167	1122	1269	1156	1200	1125	Merged
C C bending	1024	1024	1031	1030	1027	1023	1025	low merged
				863	852	860	800	Low
C $-$ H out of plane bending	676	674	681	678	660	685	648	Low