2.5.4 Drying kinetics study
The drying kinetics of the control SA/Gel as well as the fabricated
A-SA-Gel hydrogel samples was investigated by weighing their weight loss
at predetermined time intervals. In order to measure the drying kinetics
and water content of the A-SA-Gel hydrogel, three samples were
fabricated and dried at 37 °C. The dry weight
(Wo ) of samples were recorded. Then, the samples
were immersed into PBS solution for 2 h at 37 °C, and the swollen weight
(Wm ) of samples was captured. Finally, the
swollen samples were dried at 37 °C and the dry weight
(Wt ) was measured every 15 min until no further
change in the weight of the samples. The drying percent (%) was
calculated according to the following equation:
Drying (%) = [(Wt - Wo) /
(Wm- Wo )] × 100%