Fig. 3. Swelling capacity of PSH powder in an aqueous solution of NaCl and KCl (a) and swelling and deswelling of PSH powder in DW and ethanol (b), DW and normal saline (c) and pH 7.4 and pH 1.2 environments (d). Empty and filled symbols in (b–d) are indicating the swelling and deswelling phases of PSH powder, respectively.
