The Surface Structure and Thermal Properties of Novel Polymer Composite Films Based on Partially Phosphorylated Poly(vinyl alcohol) with Aluminum Phosphate

Table 2

Interpretation of PVA/PPVA and PPVA-ALPO₄ FTIR spectra.

Band assignment and wavenumber (cm^−1)
Sample	OH	C–H	PO–H	PO–H	C=C	C=O	CH2	P=O	C–O–P	C–O–H	C–O–P, P–O	P–O	Sk	O–P–O
F0	3288	2925				1722	1423, 1247			1080			836, 599
F1	3243	2913	2327	2116	1645		1417	1329	1087		986	825		477
F2	3252	2913	2328	2117	1645		1417	1331	1086		981	819		477
F3	3242	2917	2355	2117	1645		1422		1088		979	821		478
F4	3242	2915	2338	2116	1634		1424		1122		978	823		478
Intensity (%)	I	D	D	D	D		I	I	I		D	D		D
Peak position	L	L	H	U	U		H	H	H		L	L		U
Peak size	S	S	B	B	B		S	S	S		B	B		B
F3C1	3243	2918	2353	2117	1645		1422		1088		979	821		480
F3C2	3242	2913	2328	2117	1645		1429		1085		977	820		478
Intensity	I	U	U	U	D		U		D		D	D		D
Peak position	L	L	L	U	U		H		L		L	L		L
Peak size	S	U	U	U	B		U		B		B	B		B

Sk = skeletal, intensity, I = increase, D = decrease, peak position, L = shift to lower wavelength, H = shift to higher wavelength, U = unshifted, peak size, B = increase, S = decrease, U = unchanged.