Predicting the Swelling Behavior of Acrylic Superabsorbent Polymers Used in Diapers

Table 4

Validation of the model.

Sample ID	Time (min)	Temp. (°C)	pH	NaCl (%)	Water absorption (g/g)		Relative difference (%)
					Measured	Predicted
4#	15	25	3.2	0	293	284	3.17
4#	15	25	4.5	0	305	297	2.70
4#	15	25	5.6	0	298	305	-2.30
4#	15	25	7.5	0	325	311	4.51
4#	20	25	8.9	0	318	324	-1.86
4#	15	25	9.2	0	300	309	-2.92
3#	15	25	7.5	0.1	265	271	-2.22
3#	30	25	7.5	0.1	285	297	-4.05
2#	15	25	7.5	0.6	118	113	4.43
2#	10	25	7.5	0.9	37.8	38.3	-1.31
1#	15	25	7.5	0.9	42.3	41.6	1.69
1#	20	25	7.5	0.9	44.6	43.5	2.53
1#	20	25	7.9	0.1	283	284	-0.35
3#	15	30	7.9	0	319	312	2.24
5#	5	40	7.5	0	241	231	4.34
5#	10	40	7.5	0	275	286	-3.85
5#	15	50	7.5	0	305	311	-1.93