Synthesis, Optimization, Property, Characterization, and Application of Dialdehyde Cross-Linking Guar Gum

Table 3

Variance analysis of response surface test.

Source	Square sum	Freedom degree	Mean square	-ratio	Prob. level	Significance level
Regression	247.69	14	17.69	101.59	<0.0001
	0.055	1	0.055	0.31	0.5843
	27.0	1	27.0	155.01	<0.0001
	15.52	1	15.52	89.14	<0.0001
	28.95	1	29.95	166.25	<0.0001
	5.65	1	5.65	32.44	<0.0001
	50.93	1	50.93	292.44	<0.0001
	125.98	1	125.98	723.39	<0.0001
	8.15	1	8.15	46.8	<0.0001
	0.00023	1	0.00023	0.00129
	0.61	1	0.61	3.49
	3.15	1	4.94	28.37
	4.94	1	3.15	18.09	<0.0001
	6.94	1	6.94	39.86	<0.0001
	8.16	1	8.16	46.85	<0.0001
Residuals	2.44	14	0.17
Lack of fit	2.44	10	0.24
Pure error	0.000	4	0.000
Sum	10.75	28

significant difference at .
Note: difference at .