Study of Swelling Properties and Thermal Behavior of Poly(N,N-Dimethylacrylamide-co-Maleic Acid) Based Hydrogels

Table 1

Molar composition of the hydrogels.

DMA/MA; mole ratio in feed	DMA/MA^a; mole ratio in copolymer	DMA; (mmol)	MA; (mmol)	KPS^b; (mol%)	NMBA^b; (mol%)	H2O; (mL)
100/0	100/0	40.4	0	0.036	0.32	4
91/9	92/8	36.4	3.45	0.036	0.32	4
82/18	85/15	32.3	6.89	0.036	0.32	4
73/27	71/29	28.3	10.35	0.036	0.32	4
64/36	67/33	24.3	13.79	0.036	0.32	4
54/46	62/38	20.2	17.24	0.036	0.32	4
91/9	92/8	36.4	3.45	0.036	0.16	4
91/9	92/8	36.4	3.45	0.036	0.48	4
91/9	92/8	36.4	3.45	0.036	0.64	4
91/9	92/8	36.4	3.45	0.036	1.28	4

aDetermined by elemental analysis.
bmol% of the total mole number of monomers.