Effect of Polyacid and Methanol on the Transport Behavior of Na⁺ through the Macromolecular Complex Membrane

Abstract

A macromolecular complex (MC) consisting of [2-(diethylamino)ethyl]dextran, (carboxymethyl)dextran, and poly(vinyl sulfate)was prepared in a solution of 1.10 mol⋅dm^-3 and was cast into the membrane from the casting solution. The transport behavioF of Na⁺ through the MC membrane was investigated in the systems of [PVSNa+PVSH (aq.)/NaOH (aq.)] and [NaCl+HCl (aq.)/NaOH (MeOH)]. In the former case the transport ratio was much higher than that in the [NaCl+HCl (aq.)/NaOH (aq.)] system, because the membrane potential difference i. e., the driving force of the transport, was large and maintained for a long time. In the latter case, the transport ratio was also higher, since Na⁺ was transported by the potential energy.