Diffusion exponent (n)

0.5662

0.6175

0.5407

0.5768

0.5586

Diffusion constant (k × 102)

3.72

2.85

4.44

3.64

4.60

Diffusion coefficient (D × 106)

115

135

91

88

98

Initial swelling rate (ro); (dS/dt)o gwater/ggel min

8.75

7.92

9.59

7.11

8.96

Swelling rate constant (ks × 105). ggel/gwater min

1.46

1.35

1.82

1.87

3.05

Theoretical equilibrium percentage swelling (Smax%) gwater/ggel

775

767

727

616

542