Microwave-Assisted Synthesis of Cross-Linked Co-poly(itaconic anhydride-methyl methacrylate): The Effects of the Molar Ratio and Cross-Linking Agent on the Thermal Stability

Table 2

FT-IR peaks observed for the EPMITA and DPMITA copolymers.

Functional group	Peak assignment	Wavenumber (cm^-1)
		EPMITA copolymers	DPMITA copolymers
Aliphatic	C–H stretching of methyl	2955-2958	2954-2957
	Aliphatic backbone stretching	1437-1451	1438-1449
Carbonyl group	C=O stretching (anhydride) (C=O symmetric and asymmetric)	1783-1863	1780-1782
	C=O stretching methyl methacrylate	1724-1728	1709-1728
	C=O stretching (ester) EDMA	1636-1640	—
Ether	Stretching vibration of C-O-C	1160-1242	1155-1232
Aromatic	Aromatic C-H stretch	—	2995-3004
	Aromatic =CH stretch	—	1631-1640
	Aromatic =CH bending	—	618-899